Mitsubishi CDL-Z Signal Transmission System

CDL Transmission Master Station (Low-volt)

MODEL
MS-QZ UNIT A
Instruction Manual

Attention!
Please ensure that this instruction manual is
made available to end users and the personnel
responsible for maintenance.

JNEE-SI-0905-D
 MS-QZ UNIT A

This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent licenses.
Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property rights which may
occur as a result of using the contents noted in this manual.
 MS-QZ UNIT A

INTRODUCTION
Thank you for adopting Mitsubishi's Low-volt CDL (Control Center Data Link System) Transmission Master
Station.

Before using this product, carefully read this manual and fully understand the functions, performance and operation
methods so as to ensure correct usage.

Distribute this manual to end users.

Safety Guide
■ Before installation, operation, maintenance and inspection, carefully read this section to gain a full
understanding of the equipment, safety issues and other important concerns.

■ For handling of Mitsubishi motor control panels, safety precautions are classified into three groups: DANGER,
CAUTION, and REQUEST.

: In the event of mishandling, a dangerous situation may arise and it is assumed

DANGER that there is a possibility of a fatal accident or serious injury.

: In the event of mishandling, a dangerous situation may arise and it is assumed

CAUTION that there is a possibility of moderate or slight injury, or equipment damage

: In the case of mishandling, it is assumed that physical damage occurs. Actions,

REQUEST operations, attitudes, and so on to ensure safety are instructed.

CAUTION
Directions labeled with may also lead to serious accidents depending on the situation.

Please observe all the safety guidelines.

 MS-QZ UNIT A

CAUTION
(Reference
section)
● When installing the MS-QZ in the following environment, please contact us in the Section 2.1
planning stage.
(1) Place where the ambient temperature of the MS-QZ is 0℃ or less, or 55℃ or
over.
(2) Location where the humidity is high enough for condensation or freezing.
(3) Place with intensive vibration and impact.
(4) Location exposed to dust, corrosive gas (G2 class, ISA Specifications), saline
matter, and lamp black.
(5) Location which is exposed direct sunlight, rain or drops of water.

● The current capacity value obtained from the rough calculating formula is the result Section 2.4
of calculating a consumption current of the I/F circuit.
Ensure a power capacity that provides a proper margin to the calculated value during
the system design, considering impedance etc. of the transmission line.

● Ensure correct wiring connections. Section 2.4

Mistaken connections may cause the burnout or fault of the product. Section 4.1
When starting the MS-QZ, ensure again that the power and transmission lines of the
product are correctly divided, and then turn on the power for transmission of the
CDL.

● Correctly set the setting switches. Section 4.2

Mistaken setting may cause non-operation or malfunction.

● When turning on the power for the slave station, check the status of the output All sections in
information. Chapter 5
Some programs may cause malfunction (sudden starting).

● Output processing is executed even during address error or parameter error on the All sections in
slave station. Chapter 5
Even during non-connection or communication errors, output processing is continued.
Take safety measures for some programs, such as output clear at the above errors.

● If the master or slave station detects a bus low status by its self-diagnosis function Section 6.1
(at single fault), it will separate the bus.
†When several LSZ slave stations are placed on the same base unit (LSZ-B), all
the slave stations are separated. Therefore, be careful during the system design.

● When the output of the slave station is opened by its self-diagnosis function Section 6.3
(transmission stop = fault), check the setting of this unit and the specifications
of the slave station.
†During system design, note that some settings are unsupported or fixed depending
on the specification of a slave station.

● Replace the transmission power supply with a new one on a regular basis. Section 7.2
If its life expires, the transmission system will stop.
For details about replacement timing, contact the power supply manufacturer.

● Correctly prepare programming according to this instruction manual. All sections in

If a mistaken slave station address is set or a mistaken memory access is made, Chapter 9
it will cause malfunction.
 MS-QZ UNIT A

CAUTION
(Reference
section)
● Warranty and maintenance periods. -
Refer to the follows about them:
(1) The warranty period shall be for one (1) year after delivery to a designated
location.
(2) After the end of the one (1) year warranty period, maintenance shall be available
at cost to the customer, even within the recommended renewal period (described
below). Cause investigation, repair, replacement, and recovery services
shall also be available at cost to the customer, regardless of the cause of
any failure.
(3) The maintenance period shall be for seven (7) years after Mitsubishi Electric
announces the termination of production of the product. Note, however, that
if, before the end of the maintenance period, any required parts are
discontinued or undergo specification changes, Mitsubishi Electric shall
consider using alternative parts whenever possible if such parts are
obtainable but that in this and certain other circumstances, there may be
situations in which Mitsubishi Electric is not able to provide maintenance.
(4) During the maintenance period, Mitsubishi Electric shall offer repair services
only. Mitsubishi Electric cannot newly manufacture a replacement product or
replace the existing one with a new one.

● Scope of warranty. -
If, during the warranty period, a defect or failure is found in this product for a
reason attributable to Mitsubishi Electric, Mitsubishi Electric shall supply the
necessary replacement part(s) or replace or repair the defective portion free of
charge at the location where the product was purchased or to which it was delivered.
This is the sole responsibility that Mitsubishi Electric shall assume for any such
defect or failure. The defect or failure shall be excluded from the scope of this
warranty if it falls under any of the following:
(1) The product has not been used in accordance with the instructions, conditions,
or environments described in the catalogue, instruction manual, or
specifications, or it has been used improperly.
(2) The cause of the defect or failure is not with the purchased or delivered
product.
(3) The cause is an alteration or repair, made by other than Mitsubishi Electric,
that was made after purchase or delivery.
(4) The cause is attributable to a phenomenon that could not be foreseen with science
and technology put into practice at the time of purchase or upon the signing
of the agreement.
(5) If this product is incorporated into the customer’s device, the damage could
have been avoided if the customer’s device had been equipped with the
functions, structures, and so on that it would have if it followed generally
accepted practices in the industry.
(6) Our product is put to a use other than that for which it was intended.
(7) The cause is a natural or other disaster not attributable to Mitsubishi
Electric.
The term “warranty,” as used here, refers to the warranty of the product itself.
Any damage or loss resulting from a defect or failure of the product shall be excluded
from the scope of the warranty.

● Matters concerning the recommended renewal period. -

(1) The recommended renewal period shall be fifteen (10) years. As a guide, the
customer should plan to renew the product every fifteen (10) years.
(2) Towards the end of the recommended renewal period, the device failure rate
increases (because the product is in a wear-out failure period).To maintain
availability, Mitsubishi Electric thus recommends that the customer maintain
a stock of appropriate spare parts as the product ages.
(3) The recommended renewal period is not a guarantee of the life of the product.
 MS-QZ UNIT A

REQUEST
(Reference
section)
● Carry out periodic inspection. Section 7.2
Note that the equipment may not function properly unless the periodic inspection is
performed.
● The product's expected life (not guaranteed life) is 10 years.
The product's expected life is 10 years for normal use. Replace it with new one before
its life expires. If used past its life, it may not function normally.
(If the annual average of the panel ambient temperature exceeds 25℃ and the annual
average of the in-panel temperature exceeds 40℃, its life will be reduced. If using
it in an environment exceeding these temperatures, consult us in the planning stage.)
 MS-QZ UNIT A

CONTENTS

Chapter 1 Overview 1- 1
1.1 Type name of this unit 1- 1
1.2 Configuration of this unit 1- 1
1.3 Outline of data communications in this unit 1- 1
1.4 Restricted combination with PLC 1- 2
1.5 Restricted combination with CDL terminal station (slave station) 1- 2

Chapter 2 Product Specifications 2- 1

2.1 General specifications 2- 1
2.2 Specifications of CDL transmission 2- 2
2.3 Specifications of transmission distance 2- 3
2.4 Specifications of transmission power supply 2- 5

Chapter 3 System Configuration 3- 1

3.1 Example of system configuration 3- 1
3.2 Application to duplex system 3- 2

Chapter 4 External Shape of This Unit and Names of Parts of This Unit 4- 1
4.1 External shape of this unit 4- 1
4.2 Setting switches 4- 2
4.3 LED display 4- 3

Chapter 5 Data Link with PLC 5- 1

5.1 Outline of data link with PLC 5- 1
5.2 I/O assignment 5- 2
5.3 Device assignment 5- 4
5.4 Data configuration of slave station area 5- 5

Chapter 6 Self-Diagnosis Function 6- 1

6.1 Bus low status detection and bus separation function 6- 1
6.2 Error detection and output open functions of PLC 6- 2
6.3 Error detection and output open functions of slave station (restrictions at the 6- 3
application of this unit)
6.4 Testing function 6- 4

Chapter 7 Maintenance and Inspection 7- 1

7.1 Daily inspection 7- 1
7.2 Periodic inspection (off-line) 7- 1

Chapter 8 Troubleshooting 8- 1
8.1 Flow for unit malfunction 8- 1
8.2 Flow for system malfunction 8- 5

Chapter 9 Programming 9- 1
9.1 Setting of parameters 9- 2
9.2 Normal communication (input/output) 9- 4
9.3 Exclusive communication 1 (general-purpose: transient input/output) 9- 7
9.4 Exclusive communication 2 (general-purpose: transient output) 9- 9
9.5 Exclusive communication 3 (general-purpose: transient input) 9-10
9.6 Exclusive communication 4 (general-purpose: transient input) 9-12
 MS-QZ UNIT A
Chapter 10 Example of Program Preparation 10- 1
10.1 System configuration 10- 1
10.2 Program flowchart 10- 1
10.3 Example of program 10- 2

Appendix
Appendix 1 Slave Station Input/Output Information Appendix 1-1
Appendix 2 Operation of This Unit by PLC Manipulation Appendix 2-1
Appendix 3 Product Information Appendix 3-1
1. Overview
MS-QZ UNIT A
Chapter 1 Overview
This unit is a master station unit for CDL transmission that is placed on an I/O slot for the MELSEC-Q sequencer
(hereinafter referred to as PLC: Programmable Logic Controller).

This chapter describes the overview of this unit.

1.1 Type name of this unit

The type name of this unit is MS-QZ UNIT A. In this manual, the type name is abbreviated as "this unit".

1.2 Configuration of this unit

This unit will function under the configuration of the following equipment units.
In this manual, power supply, base and CPU units are collectively called PLC.

[Configuration]
P
o
w
e C T B
r P h a
s U i s
u s e
p u u u
p n n n
l i i i
y t t t
u
n
i
t

CDL transmission bus

Transmission
power supply
（24VDC）

1.3 Outline of data communications in this unit

The outline of data communications in this unit is shown in the following figure.
For details about the data communications, refer to Chapter 5.

CPU unit This unit CDL equipment

CPU
I/O signal
Interface with CDL equipment

CDL Power distribution equipment

Interface with sequencer

transmission
bus
Sequencer CPU

CDL equipment

Readout of and
write in buffer
memory

Buffer
memory

Transmission
power supply

1-1
1. Overview
MS-QZ UNIT A
1.4 Restricted combination with PLC
This section describes the systems to be applied.

1.4.1 Units to be applied and the number of units that can be placed
The number of these units that can be placed in combination with the PLC (mainly CPU unit) is limited.
Combinations other than those in the following table have not been confirmed. Contact us concerning the
combinations.
Type name of CPU unit Allowable placement number (maximum) Remarks
Q02CPU
Q02HCPU
Can be placed only
Q06HCPU 64
in the Q mode (Note)
Q12HCPU
Q25HCPU
Q00JCPU
Q00CPU Not supported -
Q01CPU
(Note) Refer to user's manuals for CPU units to be used (function description and program basics).

1.4.2 Power supply unit

Type name of power

I/O specification Remarks
supply unit
Input voltage range: 100 to 240VAC
Q61P
Output voltage: 5VDC Output current: 6A
Input voltage range: 100 to 240VAC
Q62P(Note) Output voltage: 5/24VDC Output current:
3/0.6A
Input voltage: 24VDC
Q63P
Output voltage: 5VDC Output current: 6A
Input voltage range: 100 to 120VAC/200 to
Q64P 240VAC Output voltage: 5VDC Output
current: 8.5A
(Note) Apply the 24VDC output to the transmission power supply after carefully considering the capacity
of the supply. For details about the capacity, refer to the section 2.4.

1.4.3 Base units that can be placed

This unit can be placed on any I/O slot in a base unit.
Type name of base unit Number of vacant slots Remarks
Q33B 3
Q35B 5
Q38B 8
Q312B 12

1.4.4 Software package to be applied

The sequencer software package that supports this unit is shown in the following table.
Product name Type name Remarks
GX-Developer SWnD5C-GPPW MELSEC sequencer programming software
† "n" in the type name represents 4 or more.

1.5 Restricted combination with CDL terminal station (slave station)

Any models of this unit can be combined with the CDL terminal stations (slave stations).
They can be also combined with the CDL-V slave stations (EMC-V and LS) and the CDL-Z slave stations (EMC-Z,
EMC-A, EMC-B, LSZ, and H-A7CDL†), altogether with the terminal stations.
For applicable types of slave stations, refer to the section 5.4.

† H-A7CDL: CDL terminal for A700 series inverter.

1-2
2. Product Specifications
MS-QZ UNIT A
Chapter 2 Product Specifications
This chapter describes the product specifications of this unit.

2.1 General specifications

This section describes the general specifications of this unit (including the specifications of the PLC).
Item Specification
Ambient 0 to 55℃
temperature for
running
Ambient -25 to 75℃
temperature for
storage
Ambient humidity 5 to 90%RH Dew condensation shall not be allowed.
for running
Ambient humidity 5 to 90%RH Dew condensation shall not be allowed.
for storage
Number of
Intermittent vibration
sweeps
Frequency Acceleration Amplitude
Conform to 10 to 57Hz － 0.075mm
Vibration JISB3502 57 to 150Hz 9.8m/s2 － 10 times in X, Y
resistance IEC61131-2 Continuous vibration and Z
Frequency Acceleration Amplitude directions
10 to 57Hz － 0.035mm (80 min.)
57 to 150Hz 4.9m/s2 －
Impact resistance Conform to JISB3502 and IEC6113-2 (147 m/s2, and 3 times in the three directions each)

Noise simulator that has a noise voltage of 1500V.P.P. (Place a noise filter on the
Noise tolerance
primary side of the power unit), a noise width of 1us, and a noise frequency of 25 to
60Hz
1500VAC per 1 min. between all AC terminals and earth (power supply unit)
Withstand voltage 500VAC per 1 min. between all DC terminals and earth (each CDL transmission bus of this
unit)
Insulation 5MΩ or more between all AC terminals and earth at a 500VDC insulation tester (excluding
resistance error contacts)
Atmosphere for Shall not have corrosive gas and be extremely dusty.
running
Cooling method Self-cooled
Consumption VA 5VDC 0.35A
I/O occupation 32 points (special function unit)
number

When installing the MS-QZ in the following environment, please contact us in the planning stage.
! CAUTION (1) Place where the ambient temperature of the MS-QZ is 0℃ or less, or 55℃ or over.
(2) Location where the humidity is high enough for condensation or freezing.
(3) Place with intensive vibration and impact.
(4) Location exposed to dust, corrosive gas (G2 class, ISA Specifications), saline matter, and
lamp black.
(5) Location which is exposed direct sunlight, rain or drops of water.

2-1
2. Product Specifications
MS-QZ UNIT A

2.2 Specifications of CDL transmission

This section describes the specifications of CDL transmission in this unit (including the specifications of
the CDL-Z).
Item Specification
Maximum number of Max 64 stations
Physical condition

communicated stations
Transmission Current Twisted pair cable KV,KHV,CPEE 0.75 to 2.0mm2 (AWG 14 to 18, φ1.0 to 1.6)
medium Optical Quartz glass GI50/125 optical fiber
Maximum Current 2000m (depending on cable sizes and the number of connected stations)
transmission Optical 2000m (Quartz glass GI optical fiber)
distance
(Note 1)
Topology Bus method
Transmission speed 9600bps
Electrical
condition

Modulation Base band modulation

Bus connection method Photocoupler
Transmission power 24VDC is supplied from another power supply. (For details, refer to the section
supply 2.4.)
Transmission method Time division multiplex
Counter method 1:n multi-drop method
Logic method

Synchronous method Start stop synchronous

Control protocol CSMA/NBA (Note 3) and polling (together)
Error detection Parity check and FCC (together)
Self-diagnosis Bus low status detective and bus separation functions (Note 2): Available (For
function details, refer to the section 6.1.)
(Note 1) For details about the transmission distance, refer to the section 2.3.
(Note 2) It monitors the time for which the stations signal line is at the L level, and if it is not restored
within the prescribed time (bus low status), the signal line is released with a relay, and the bus is
opened. It is restored automatically if normal. The bus low status detecting time is 200 to 500ms.
(Note 3) CSMA/NBA (Carrier Sense Multiple Access with Non-destructive Bitwise Arbitration):
Individual terminal and master (node) stations monitor the common bus, and will send a signal if the bus
becomes vacant. In this case, a rule including a priority of each node is added to avoid communication
contention. Due to that one of the nodes sends a signal in this method, the efficiency of using the bus
becomes high.

2-2
2. Product Specifications
MS-QZ UNIT A

2.3 Specifications of transmission distance

Due to using the current bus method, the transmission distance varies with the transmission line impedance
and number of connected stations. Also, there is a limit on the signal transmission time to the overall
transmission system. Therefore, set the transmission distance to meet the following conditions.

(1) Transmission system (node) division

Divide the transmission system into individual systems (nodes) with a repeater (RPG) or optical converter
(OEG), and set each length to be equal to or shorter than the values shown in the following table.

(2) Overall transmission system

In the overall transmission system with combined nodes, the distance between the most separated two points
must be less than or equal to the values shown in the following table.

・ Classification of transmission
line and node maximum length ・Overall transmission system maximum distance
Classification of Node maximum Overall transmission system maximum
Condition
transmission line length distance
Basic system 2000m
AWG18 76
 100m (Without using a repeater or † Inclusion of CDL-Z and V makes
(0.75mm2, φ1.0mm) N optical converter) 1500m
2000×(N＋1)m
AWG16 128
 100m Transmission system with N † Inclusion of CDL-Z and V makes
(1.25mm2, φ1.3mm) N units of repeater 1500×(N＋1)m
(N: 1 to 4) Max. 10000m
AWG14 200
 100m † Inclusion of CDL-Z and V makes
(2.0 mm2, φ1.6mm) N 6000m
Transmission system using 2000m
an optical converter † Quartz glass GI optical fiber
† N: Node
・In the 4-wire system, N indicates the number of connected stations.
・In the 2-wire system, N indicates the number of connected nodes minus the minimum of the numbers of
nodes connected at the individual points.
[Example] In the 2-wire system, where 16 stations, 24 stations and 24 stations are intensively placed
to the three locations, respectively, N = 64 – 16 = 48 is available.
† (Connected station of node) ≦ 64

2-3
2. Product Specifications
MS-QZ UNIT A
[Example] When using a AWG16 (1.25mm2, φ1.3mm) transmission line

PW Master station PW Master station PW

4-wire system 2-wire system

N=n-n/2
LS LS LS

64 stations 200m Point 1 ··n/2 station Point 2 ··n/2 station

32 stations 400m
n=64 ··· 400m
16 stations 800m
n=32 ··· 800m
6 stations 2000m
n=16 ··· 1600m（1500m with CDL-Z and V）
(1500m with CDL-Z and V）
n=12 ··· 2000m（1500m with CDL-Z and V）

PW Master station PW

4-wire system Repeater 4-wire system

RPG

LS LS

32 stations 400m 32 stations 400m PW ： Transmission power

supply 24VDC

2-4
2. Product Specifications
MS-QZ UNIT A

(3) Example of transmission distance/number of stations

The transmission distance for 1 station is shown with the transmission wiring connections (wiring in panel).If
the diameter of the transmission line is increased, the distance is also increased. However, do not exceed
a diameter of 2.0mm2(φ1.6mm) (AWG14). For PNS-3 system, the distance is approximately 2/3

a) Wiring connection (1)

PW
LS L（m） N（units）
L (m) 2000 5
Master N (units) 1000 12
station 500 25
PW：Transmission power supply DC24V
250 64
Transmission line AWG16（1.25mm2, φ1.3mm）

b) Wiring connection (2)

L1（m） L2（m） N1（units）N2（units）

PW LS 1 34
L1 (m) 0 1000
9 9
N1 (units)
Master 1 37
LS 500 500
station L2 (m) 16 16
N2 (units) 1 30
500 1000
5 5
PW：Transmission power supply 24VDC 1 17
500 1500
Transmission line AWG16（1.25mm2, φ1.3mm） 5 5
1 22
1000 1000
9 9

c) Wiring connection (3)

PW PW
Master
RPG
station
n1 units n2 units n3 units n4 units

PW：Transmission power
supply 24VDC
(n1+n2+n3+n4) <= 64 units
RPG：Bus repeater
For the distances for (n1+n2) and (n3+n4), refer to
the table in the previous page.

2-5
2. Product Specifications
MS-QZ UNIT A

2.4 Specifications of transmission power supply

This section describes the specifications of transmission power supply of this unit. The power must be supplied
from the external power supply.
Item Specification
Transmission power 24VDC
supply voltage
Allowable 20VDC to 26VDC
variation range

(1) Calculation of current capacity

Rough calculating formula: Current capacity = 12mA(Current consumption of I/F single circuit)  n (the number
of I/F) ← The number of I/F contains the MS-QZ.

[Example 1] 15 LSZ-80 slave stations and 10 LSZ-B2 base units

† The number of I/F shall be 1 per base unit.
Current capacity = 12  (1+10) = 132mA

[Example 2] 64 single slave stations (Maximum number of connected slave stations)

Current capacity = 12  (1+64) = 780mA

(2) Wiring
In the transmission power supply, connect 24VDC (+) to the power line (P), and 24VDC (G) to the neutral
line (N).

・The current capacity value obtained from the rough calculating formula is the result
! CAUTION of calculating a consumption current of the I/F circuit.
Ensure a power capacity that provides a proper margin to the calculated value during
the system design, considering impedance etc. of the transmission line.

・Ensure correct wiring connections.

Mistaken connections may cause the burnout or fault of the product.
When starting the MS-QZ, ensure again that the power and transmission lines of the
product are correctly divided, and then turn on the power for transmission of the CDL.

2-6
3. System Configuration
MS-QZ UNIT A
Chapter 3 System Configuration
This chapter describes system configuration.

3.1 Example of system configuration

This unit can be made up of up to 64 slave stations via the CDL transmission bus.
In addition, it can contain up to 64 sub-slave stations, but a master station will not control sub-slave stations.
(Point) This unit controls only a range of slave station addresses, or 01h to 40h (maximum number of
64 units†).
† One unit of H-A7CDL occupies two station addresses. When all slave stations consist of H-A7CDL,
the maximum number of connected slave stations is 32.
The configuration of sub-slave stations is omitted in the following figure. For the application of sub-slave
stations, refer to the instruction manuals for EMC-Z, EMC-A and EMC-B.
This unit
Master
station Transmission
power supply
(24VDC)

Transmission bus

CDL CDL CDL CDL CDL CDL CDL CDL

slave slave slave slave slave slave slave slave
station station station station station station station station

#01h #02h #03h #04h #05h #06h #07h #08h

CDL CDL CDL CDL CDL CDL CDL CDL

slave slave slave slave slave slave slave slave
station station station station station station station station

#09h #0Ah #0Bh #0Ch #0Dh #0Eh #0Fh #10h

CDL CDL CDL CDL CDL CDL CDL CDL

slave slave slave slave slave slave slave slave
station station station station station station station station

#11h #12h #13h #14h #15h #16h #17h #18h

CDL CDL CDL CDL CDL CDL CDL CDL

slave slave slave slave slave slave slave slave
station station station station station station station station

#19h #1Ah #1Bh #1Ch #1Dh #1Eh #1Fh #20h

CDL CDL CDL CDL CDL CDL CDL CDL

slave slave slave slave slave slave slave slave
station station station station station station station station

#21h #22h #23h #24h #25h #26h #27h #28h

CDL CDL CDL CDL CDL CDL CDL CDL

slave slave slave slave slave slave slave slave
station station station station station station station station

#29h #2Ah #2Bh #2Ch #2Dh #2Eh #2Fh #30h

CDL CDL CDL CDL CDL CDL CDL CDL

slave slave slave slave slave slave slave slave
station station station station station station station station

#31h #32h #33h #34h #35h #36h #37h #38h

CDL CDL CDL CDL CDL CDL CDL CDL

slave slave slave slave slave slave slave slave
station station station station station station station station

#39h #3Ah #3Bh #3Ch #3Dh #3Eh #3Fh #40h

3-1
3. System Configuration
MS-QZ UNIT A

3.2 Application to duplex system

This unit cannot be used on a fundamental base for duplex system that uses MELSEC-Q redundancy CPU (QnPRHCPU).
In the following system configuration, however, this unit can be used in filled areas.
† For details about MELSEC-Q duplex system, separately confirm them in the MELSEC-Q user's manual.

ＭＥＬＳＥＣＮＥＴ／Ｈ

[A system] [B system]
Power supply unit

Power supply unit

ＭＥＬＳＥＣＮＥＴ

ＭＥＬＳＥＣＮＥＴ
CPU unit

CPU unit
Ａ Ｂ

Tracking cable Duplex system

Extension cable
Power supply unit

Power supply unit

Duplex extension base

（Q65WRB）

3-2
4. External Shape of This Unit and Names of Parts of This Unit
MS-QZ UNIT A
Chapter 4 External Shape of This Unit and Names of Parts of This Unit

4.1 External shape of this unit

The external shape of this unit is shown in the figure below.

27.4mm 104.5mm

MS-QZ
1 5

25.0mm
RUN■ ■C-RUN 2 6
LED display SD■ ■C-ERR 3 7
RD■ ■Q.CPU 4 8
Name plate of UNIT A
unit type name
SW1
Setting switch
SW2

98.0mm Product name plate

CDL I/F UNIT
TYPE MS-QZ UNIT A
P P SERIAL ○○○○○○†
MITSUBISHI ELECTRIC
Terminal block N N
The alphabet (†) at the end of
S S the serial number (SERIAL) is a
product sub-code.

MS-QZ
14.5mm

4.1.1 External wiring to terminal block

The following table shows wirings to a terminal block of the CDL transmission bus in this unit.
Signal name Content Details
P Power line Transmission power supply 24VDC(+)
N Transmission Neutral Transmission power supply 24VDC(G)
bus line
S Signal
line
(Note) Install external wirings in an off-line mode of this unit.

The terminal and fixing screws of the unit within the following torque range.
Screw position Fastening torque range
Terminal screw for terminal block (M4) 82 to 111N･cm
Unit fixing screw (normally not required) (M3) (Note) 36 to 48N･cm
(Note) The unit can be easily fixed to a base unit by a hook on the upper part of the unit.
However, it is recommended that the unit should be fixed with the unit fixing screw in a place subject
to strong vibration or impact.

4.1.2 Handling precautions and installation environment

(1) The unit's case is made of synthetic resin. Do not drop it or vibrate it strongly.

(2) For installation environment, refer to the user's manual for a CPU unit that will be used.

・Ensure correct wiring connections.

! CAUTION Mistaken connections may cause the burnout or fault of the product.
When starting the MS-QZ, ensure again that the power and transmission lines of the
product are correctly divided, and then turn on the power for transmission of the CDL.

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4. External Shape of This Unit and Names of Parts of This Unit
MS-QZ UNIT A
4.2 Setting switches
This section describes setting switches in this unit.

4.2.1 SW1 (Display changing-over switch)

This switch is used for selection of items for status display. The setting of the switch is changeable during
running.

Setting Content
0 Slave station overall display/error display
1 Slave station overall display/error display
2 Slave station communication status display 01h to 08h
3 Slave station communication status display 09h to 10h
4 Slave station communication status display 11h to 18h
5 Slave station communication status display 19h to 20h
6 Slave station communication status display 21h to 28h
7 Slave station communication status display 29h to 30h
8 Slave station communication status display 31h to 38h
9 Slave station communication status display 39h to 40h
A Unit setting display (Note)
B Communicated slave station count display (Note)
C I/O assignment X00 to X07 display (Note)
D I/O assignment X08 to X0F display (Note)
E I/O assignment Y10 to Y17 display (Note)
F I/O assignment Y18 to Y1F display (Note)
(Note) If SW1 becomes the same as SW2 at power activation, execute the test function.

4.2.2 SW2 (Slave station power setting switch)

The presence or absence of slave station power that is generated by communication between this unit and PLC
will be set. The setting of the switch is changeable during running.

Content
Setting
At startup of this unit At stop of link to PC
0 Retention Retention
1 OFF Retention
2 Retention OFF
3 OFF OFF
Selection of
4 Retention Retention
slave station
5 Retention Retention
power setting
6 Retention Retention
7 Retention Retention
8 Retention Retention
9 Retention Retention
A Display test (Note)
B Setting test (Note)
C Selection test Hardware test (Note)
D item I/O operation test (Note)
E CDL transmission test (sending function) (Note)
F CDL transmission test (receiving function) (Note)
(Note) Only if SW1 is the same as SW2 at power activation, execute the test function.
(Even if SW1 is the same as SW2 after startup of this unit, the test function will not
be executed.)
For details about the test function, refer to the section 6.4.
If SW2 is determined to be one of A to F when the test function is not executed, it will
be the same as 0.

・Correctly set the setting switches.

! CAUTION Mistaken setting may cause non-operation or malfunction.

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4. External Shape of This Unit and Names of Parts of This Unit
MS-QZ UNIT A
4.3 LED display
This section describes LED display of this unit.

ＭＳ－ＱＺ
１ ５
RUN■ ■C-RUN ２ ６
SD■ ■C-ERR. ３ ７
RD■ ■Q.CPU ４ ８
UNIT A

4.3.1 Running display

The running status of this unit can be confirmed in the LED display on its left side.
Name Content Lighting Blinking Extinction Remarks
RUN Unit status Unit normal - Unit malfunction H/W monitor
SD CDL sending Sending a signal to CDL I/F Stop sending the I/F circuit
(Note 1)
status circuit signal monitor
RD CDL receiving CDL bus transmission signal "H" Transmission CDL bus
(Note 1)
status signal"L" monitor
C-RUN Master station Under running - Standby Unit monitor
(Note 2)
status
C-ERR CDL Light fault Under running CDL
Serious fault
transmission (Operation transmission (Note 3)
(Operation stop)
status continuation) monitor
Q.CPU PC link status Under data linking (Under Without command PC running
(Note 1)
FROM/TO execution) execution status
(Note 1) The display statuses of lighting and blinking are affected by linking statuses.
(Note 2) It represents "Under Running" at the control of the CDL link (at effective control of the PLC).
(Note 3) Data link will be stopped at serious fault (Operation stop). (Transmission I/F error, transmission
bus error, transmission power supply error, etc.)
Data link will be continued at light fault (Operation continuation). (Address error, parameter error,
slave station absence error, etc.)

4.3.2 Status display

The statuses of the items (selection of SW1) can be confirmed on the LED display on the right side of this
Unit. The details are described in the following section.
Name Content Lighting Blinking Extinction Remarks
1
2
3
4 Select SW1
5 settings.
6
7
8

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4. External Shape of This Unit and Names of Parts of This Unit
MS-QZ UNIT A

4.3.3 Details of status display

This section describes the details of displays when SW1 settings are selected.

(1) SW1-setting "0": Slave station overall display/error content display

Communication statuses of all slave stations are displayed. At the occurrence of a CDL error, the content
of the error is displayed.
[Normal] Slave station overall display
One LED display supports 1 block = 8 stations.
Communication statuses of slave stations are displayed per block. For details, refer to (3) to (10).
Name Content Lighting Blinking Extinction Remarks
1 LS01h to LS08h
2 LS09h to LS10h
3 LS11h to LS18h All stations in One of the
4 LS19h to LS20h the block - stations in the 1 block = 8
5 LS21h to LS28h normally block abnormally stations
6 LS29h to LS30h communicate communicates
7 LS31h to LS38h
8 LS39h to LS40h

[At occurrence of CDL error] Display of the error content

At the occurrence of a CDL error, the content of the error is displayed. (The display will be automatically
changed over.)
Confirm on the running display (C-ERR) whether the error occurs.
Name Content Lighting Blinking Extinction Remarks
1 Address error
2 Parameter error
3 Transmission I/F
error
4 Transmission bus -
error Error Display only at
Normal
5 Transmission power occurrence error occurrence
supply error
6 Slave station
absence error
7 -
8 -

(2) SW1-setting "1": Slave station overall display/error content display

Communication statuses of all slave stations are displayed. At the occurrence of a CDL error, the content
of the error is displayed.
[Normal] Slave station overall display
One LED display supports 1 block = 8 stations.
Communication statuses of slave stations are displayed per block. For details, refer to (3) to (10).
Name Content Lighting Blinking Extinction Remarks
1 LS01h to LS08h
2 LS09h to LS10h
At least one of
3 LS11h to LS18h All stations in
the stations in
4 LS19h to LS20h - the block 1 block = 8
the block
5 LS21h to LS28h abnormally stations
normally
6 LS29h to LS30h communicate
communicates
7 LS31h to LS38h
8 LS39h to LS40h

[At occurrence of CDL error] Display of the error content

At the occurrence of a CDL error, the content of the error is displayed. (The display will be automatically
changed over.)
Confirm on the running display (C-ERR) whether the error occurs.
The display will become the same as the content of (1).

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MS-QZ UNIT A

(3) SW1-setting "2": Slave station details display 1

The communication status for each slave station is displayed.
Name Content Lighting Blinking Extinction Remarks
1 LS01h
2 LS02h
3 LS03h
4 LS04h Communication Address error or Communication
5 LS05h normal parameter error abnormal
6 LS06h
7 LS07h
8 LS08h

(4) SW1-setting "3": Slave station details display 2

The communication status for each slave station is displayed.
Name Content Lighting Blinking Extinction Remarks
1 LS09h
2 LS0Ah
3 LS0Bh
4 LS0Ch Communication Address error or Communication
5 LS0Dh normal parameter error abnormal
6 LS0Eh
7 LS0Fh
8 LS10h

(5) SW1-setting "4": Slave station details display 3

The communication status for each slave station is displayed.
Name Content Lighting Blinking Extinction Remarks
1 LS11h
2 LS12h
3 LS13h
4 LS14h Communication Address error or Communication
5 LS15h normal parameter error abnormal
6 LS16h
7 LS17h
8 LS18h

(6) SW1-setting "5": Slave station details display 4

The communication status for each slave station is displayed.
Name Content Lighting Blinking Extinction Remarks
1 LS19h
2 LS1Ah
3 LS1Bh
4 LS1Ch Communication Address error or Communication
5 LS1Dh normal parameter error abnormal
6 LS1Eh
7 LS1Fh
8 LS20h

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MS-QZ UNIT A

(7) SW1-setting "6": Slave station details display 5

The communication status for each slave station is displayed.
Name Content Lighting Blinking Extinction Remarks
1 LS21h
2 LS22h
3 LS23h
4 LS24h Communication Address error or Communication
5 LS25h normal parameter error abnormal
6 LS26h
7 LS27h
8 LS28h

(8) SW1-setting "7": Slave station details display 6

The communication status for each slave station is displayed.
Name Content Lighting Blinking Extinction Remarks
1 LS29h
2 LS2Ah
3 LS2Bh
4 LS2Ch Communication Address error or Communication
5 LS2Dh normal parameter error abnormal
6 LS2Eh
7 LS2Fh
8 LS30h

(9) SW1-setting "8": Slave station details display 7

The communication status for each slave station is displayed.
Name Content Lighting Blinking Extinction Remarks
1 LS31h
2 LS32h
3 LS33h
4 LS34h Communication Address error or Communication
5 LS35h normal parameter error abnormal
6 LS36h
7 LS37h
8 LS38h

(10) SW1-setting "9": Slave station details display 8

The communication status for each slave station is displayed.
Name Content Lighting Blinking Extinction Remarks
1 LS39h
2 LS3Ah
3 LS3Bh
4 LS3Ch Communication Address error or Communication
5 LS3Dh normal parameter error abnormal
6 LS3Eh
7 LS3Fh
8 LS40h

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4. External Shape of This Unit and Names of Parts of This Unit
MS-QZ UNIT A

(11) SW1-setting "A": Unit setting display

The unit setting of this unit is displayed.
Name Content Lighting Blinking Extinction Remarks
1 Unit setting UNIT A - - Low-voltage
standard
2
3
4
5 Not used - - - -
6
7
8

(12) SW1-voltage "B": Communicated slave station count display

This unit displays a maximum of slave station address that is being supported for communication.
Name Content Lighting Blinking Extinction Remarks
1 Slave station
2 address
3 (Binary number)
Slave station Slave station
4 - -
maximum station address range
5 1: Least
number display 10h to 40h (Note)
6 significant bit
7 8: Most
8 significant bit
(Note) A value of "slave station maximum station number" is input in parameter information (device K2025)
in a buffer memory at the startup of this unit. If the value is not set or out of the setting range, it
will become 40h.

(13) SW1-setting "C": PLC input signal display 1

The status of an input signal (X) assigned to this unit is displayed.
Name Content Lighting Blinking Extinction Remarks
(Hexadecimal)
1 Xn0
2 Xn1
3 Xn2
4 Xn3 Signal ON - Signal OFF
5 Xn4
6 Xn5
7 Xn6
8 Xn7
・n will be determined based on the I/O assignment (including placement position) of the PLC in this unit.

(14) SW1-setting "D": PLC input signal display 2

The status of an input signal (X) assigned to this unit is displayed.
Name Content Lighting Blinking Extinction Remarks
(Hexadecimal)
1 Xn8
2 Xn9
3 XnA
4 XnB Signal ON - Signal OFF
5 XnC
6 XnD
7 XnE
8 XnF
・n will be determined based on the I/O assignment (including placement position) of the PLC in this unit.

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MS-QZ UNIT A

(15) SW1-setting "E": PLC output signal display 1

The status of an output signal (Y) assigned to this unit is displayed.
Name Content Lighting Blinking Extinction Remarks
(Hexadecimal)
1 Y(n+1)0
2 Y(n+1)1
3 Y(n+1)2
4 Y(n+1)3 Signal ON - Signal OFF
5 Y(n+1)4
6 Y(n+1)5
7 Y(n+1)6
8 Y(n+1)7
・n will be determined based on the I/O assignment (including placement position) of the PLC in this unit.

(16) SW1-setting "F": PLC output signal display 2

The status of an output signal (Y) assigned to this unit is displayed.
Name Content Lighting Blinking Extinction Remarks
(Hexadecimal)
1 Y(n+1)8
2 Y(n+1)9
3 Y(n+1)A
4 Y(n+1)B Signal ON - Signal OFF
5 Y(n+1)C
6 Y(n+1)D
7 Y(n+1)E
8 Y(n+1)F
・n will be determined based on the I/O assignment (including placement position) of the PLC in this unit.

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5.Data Link with PLC
MS-QZ UNIT A
Chapter 5 Data Link with PLC

5.1 Outline of data link with PLC

As shown in the following figure, data is swapped between the PLC and slave stations on CDL transmission buses
via this unit.
This unit provides I/O signals and devices to swap data with the PLC.

CPU unit This unit CDL equipment

CPU
I/O signal

Interface with CDL equipment

Power distribution equipment

CDL
Interface with sequencer transmission
bus
Sequencer CPU

CDL equipment
Readout of and
write in
buffer memory

Buffer
memory

Transmission
power supply

(1) I/O signal

This unit sets 32 points of the function unit for the I/O assignment of the PLC.
A data processing protocol is constructed based on input/output signals (X) and (Y) that are assigned
to this unit.
・ Input signals (X) …… 32 points
・ Output signals (Y) …… 32 points
(Caution) Due to that I/O signals are fixed to different items, do not gain access to the following signals.
If so, it may lead to system shutdown.
・ Execution of access to signals that are not used
・ Execution of access to output signals (Y) that cannot be used

(2) Device
A buffer memory access command (FROM/TO) of the PLC will be used.
Only access to a device fixed for each item enables data sending and receiving.
・ Device range …… K0000 to K2025
(Caution) Due to that inputs/outputs of the devices are fixed for different items, do not gain access
to the following device areas.
・ Execution of TO command to device area of FROM
・ Execution of FROM command to device area of TO
・ Execution of buffer access command to device area that is not used

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5.Data Link with PLC
MS-QZ UNIT A
5.2 I/O assignment
This section describes the assignment of I/O signals in this unit.
n will be determined based on the I/O assignment of PLC and the placement position in this unit.

5.2.1 Input signals (X)

This unit provides ON/OFF to input signals (X).
Due to automatic recovery of fault signals other than XnF, execute cause retention by the PLC.
Input signal Content Details
(X)
Xn0 MS-QZ READY ON at power activation of sequencer CPU or completion of MS-QZ preparation at
reset.
OFF at detection of hardware malfunction.
Xn1 Parameter setting ON at completion of OFF→ON of parameter setting request Y(n+1)1.
completed OFF at OFF of parameter setting request Y(n+1)1.
Xn2 Exclusive ON at completion of OFF→ON of exclusive communication request to slave station.
communication OFF at OFF of exclusive communication request Y(n+1)2.
completed
Xn3 Simultaneous ON at completion of OFF→ON of simultaneous transmission request Y(n+1)3 to EMC.
transmission OFF at OFF of simultaneous transmission request Y(n+1)3.
completed
Xn4 Setting change OFF→ON at setting data change (report) from EMC.
request OFF at ON of confirmation Y(n+1)4.
Xn5 Command change OFF→ON at command data change (report) from slave station.
request OFF at ON of command change confirmation Y(n+1)5.
Xn6 FROM command ON at command executable. OFF at completion of ON of FROM command completed
permission Y(n+1)6.
The completion indicates the completion of renewal of all devices.
ON at OFF→ON of TO command completed Y(n+1)7.
However, Xn7 will not become ON till all data on output information or command
output information is completely sent. In this case, Xn6 will retain ON.
Xn7 TO command permission ON at command executable. OFF at completion of ON of TO command completed Y(n+1)7.
The completion indicates the completion of control from CDL master station to
slave station (sending of change of output information).
ON at OFF→ON of FROM command completed Y(n+1)6. However, do not turn ON till
all data on output information or command output information is completely sent.
In this case, FROM command permission Xn6 will retain ON.
Xn8 Unit READY ON at completion of this unit's initial processing, initial communication with
slave station, and parameter setting.
Retain the ON status until the resetting of the PLC.
Xn9 Command READY ON at completion of setting to EMC and running history polling. Retain the ON
status until the resetting of the PLC.
XnA Unit malfunction ON at detection of running unit having the same function as this unit.
running Automatically OFF at error recovery. OFF during normal running.
XnB Transmission I/F ON at occurrence of transmission fault including that in this unit.
fault Automatically OFF at error recovery. OFF during normal running.
XnC CDL setting error ON at address error and parameter error in slave station. Automatically OFF at
error recovery. OFF during normal running.
XnD No-response fault ON in a case where a response from a slave station cannot be recognized for 15
seconds despite normal communication of this unit. OFF at error recovery. OFF
during normal running.
XnE - Not used
XnF Hardware fault ON at hardware fault in this unit. Retain the ON status until the resetting of
the PLC. OFF during normal running.
X(n+1)0 - Not used
: : :
X(n+1)F - Not used
† EMC: Slave stations with EMC-Z, EMC-A or EMC-B specifications

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5.Data Link with PLC
MS-QZ UNIT A

5.2.2 Output signals (Y)

Output signals (Y) turn 0N/OFF in the sequence program of the PLC.
Output Content Details
signal (Y)
Yn0 - Not used
: : :
YnF - Not used
Y(n+1)0 Resetting control Reset each error flag (attribute information) for each slave station in this
unit at OFF→ON.
Perform no process at OFF.
Y(n+1)1 Parameter setting Start processing at OFF→ON.
request OFF at ON of parameter setting completed Xn1.
Y(n+1)2 Exclusive Start processing at OFF→ON.
communication request OFF at ON of exclusive communication completed Xn2.
Y(n+1)3 Simultaneous Start processing at OFF→ON.
transmission request OFF at ON of simultaneous transmission completed Xn3.
Y(n+1)4 Setting change Analyze setting data change (report) at OFF→ON of setting change request Xn4.
(Note 1) confirmation OFF at OFF of setting change request Xn4.
Y(n+1)5 Command change Analyze command data change (report) at OFF→ON of command change request Xn5.
(Note 1) confirmation ON at completion of the analysis. OFF at OFF of command change request Xn5.
Y(n+1)6 FROM command OFF→ON at completion of FROM command execution.
completed OFF at OFF of FROM command permission Xn6.
Y(n+1)7 TO command completed OFF→ON at completion of TO command execution.
OFF at OFF of TO permission Xn7.
Y(n+1)8 Communication control Execute write polling to slave station at ON.
(Note 2) 1 Perform no process at OFF.
Y(n+1)9 Communication control Perform no process at ON.
(Note 3) 2 Execute read polling to slave station at OFF.
Y(n+1)A Communication control Perform no process at ON.
(Note 4) 3 Execute setting request polling to EMC at OFF.
Y(n+1)B Communication control Perform no process at ON.
(Note 4) 4 Execute running history request polling to EMC at OFF.
- Not used
Y(n+1)D - Not used
Y(n+1)E - Not used
Y(n+1)F - Not used
† EMC: Slave stations with EMC-Z, EMC-A or EMC-B specifications
† Do not perform the operation of ON/OFF of signals that are not used.
(Note 1) If the cause of additional change request occurs during a time from ON of a change request to ON of a confirmation
flag, the change request will turn ON immediately after ON→OFF even when the confirmation flag is turned ON.
(Note 2) At ON of exclusive communication 1 Y(n+1)8, write polling (confirmation sending of output information) is executed
in an execution range of read polling.
Write polling is effective in confirmation control sending at resetting of a status signal during slave station
power discontinuity→recovery or after system changeover.
The following cautions are required for handling during the use of communication control 1 (write polling).
・ Control power: It is necessary to set the applicable output information of the relevant slave station to 0
(control "OFF") at the occurrence of an error (or slave station power discontinuity), in order to prevent mistaken
control during slave station power discontinuity→recovery.
・Display power: Particular considerations are not required.(It is necessary to take a consideration for Display
"OFF→ON " during recovery in order to perform resetting, when it is not selected.)
(Note 3) At OFF of communication control 2 Y(n+1)9, read polling is executed. A range of the execution is 01h to 40h of
slave station addresses (default: 64 stations).
Parameter setting can change the range to 10h to 40h. ON of communication control 2 Y(n+1)9 is used for our test
setting. Hence, do not use it under ON.
(Note 4) A range of the execution is 01h to 40h of slave station addresses (default: 64 stations). Parameter setting can
change the range to 10h to 40h (Polling is executed in the same range as for communication control 2).

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5.Data Link with PLC
MS-QZ UNIT A

5.3 Device assignment

This section describes the assignment of devices in this unit. In this unit, the devices are fixed for different
items. This unit sets data for a device area of FROM. The PLC sets data for a device area of TO.

5.3.1 Slave station area

The following table shows the devices assigned to slave stations.
Device Content Details Reference Remarks
section
K0000 to K0319 Input information Input data from slave station 5.4.1 64 slave
Slave station 5.4.2 stations
Status flag of communication
K0320 to K0323 communication
with slave station
information
K0324 Running information Running status flag of this unit 5.4.3
K0325 Error information Error status flag of this unit 5.4.4
Setting status 5.4.5 64 EMC
K0326 to K0329 Setting change flag from EMC
information stations
K0330 to K0841 Setting information Setting data from EMC 5.4.6
F
Running history 5.4.7
R K0842 to K1353 Running history data from EMC
information
O
M Attribute information Running status flag of slave 5.4.8 64 slave
K1354 to K1417
station stations
Command status Command change flag from slave 5.4.9
K1418 to K1421
information station
Command report Command report data from slave 5.4.10
K1422 to K1549
information station
Command result Command request result flag to 5.4.11
K1550 to K1553
information slave station
Command response Command response data from slave 5.4.12
K1554 to K1681
information station
(Not (Not used) - -
K1682 to K1699 (Not used)
used)
K1700 to K1827 Output information Output data to slave station 5.4.13 64 slave
Command request Command request flag to slave 5.4.14 stations
K1828 to K1831
information station
Command output Command output data to slave 5.4.15
K1832 to K1959
information station
Simultaneous 5.4.16
T Simultaneous transmission
K1960 transmission
O output data to slave station
information
Parameter setting Parameter setting data for slave 5.4.17
K1961 to K2024
station type
Setting of number of Data on setting of maximum number 5.4.18
K2025 slave stations for of slave stations for
communication communication
(For (For future) - -
K2026 to K32765 (Extension FROM and TO areas)
future)
† Do not write data on (Not used) and (For future) devices.

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5.Data Link with PLC
MS-QZ UNIT A

5.4 Data configuration of slave station area

This section describes the details of the devices assigned to slave stations.
The following table shows the relevant equipment for types of slave stations.

Subsequent examples of buffer memory data show a case where the following slave stations are connected.

Name in connection Description Name of relevant equipment Parameter

example
CDL-V CDL-V general-purpose slave station LS-44, LS-44GS(X), EMC-VB, 00h
etc.
CDL-Z(V mode) LSZ remote I/O slave station (V mode LSZ-44, LSZ-AI, LSZ-AO, etc. 01h
setting)
CDL-Z(Z mode) LSZ remote I/O slave station (Z mode LSZ-44, LSZ-AI, LSZ-AO, LSZ-MCI, 02h
setting) etc.
EMC(CDL-Z mode 1-3) EMC (CDL-Z) slave station Series of EMC-Z, EMC-A and EMC-B 03h
(Transmission mode = 1 to 3)
EMC(CDL-Z mode 4-7) EMC (CDL-Z) slave station Series of EMC-Z, EMC-A and EMC-B 01h
(Transmission mode = 4 to 6)
H-A7CDL CDL slave station for A700 series H-A7CDL (CDL transmission 04h
inverter option)
LSZ-MRU Power measurement control unit LSZ-MRU C5h

5.4.1 Input information 5 words × 64 stations = 320 words

This information contains input data from a slave station.

Example of buffer memory data

Slave station
Device address b15 b7 b0 Slave station type
K0000 01h 00h 1byte CDL-V
K0001 00h 00h
: : :
K0005 02h 00h 1byte CDL-Z(V mode)
K0006 00h 00h
: : :
K0010 03h 2byte CDL-Z(Z mode)
K0011 00h 00h
: : :
K0015 04h 4byte EMC(CDL-Z mode 1-3)
K0016
K0017 00h 00h
: : :
K0020 05h 00h 1byte EMC(CDL-Z mode 4-7)
K0021 00h 00h
: : :
K0025 06h 4byte H-A7CDL
K0026
K0027 00h 00h
: : :
K0035 08h 4byte LSZ-MRU
K0036
K0037 00h 00h
: : : :
K0315 40h 00h 00h Not connected
K0316 00h 00h
K0317 00h 00h
K0318 00h 00h
K0319 00h 00h

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5.Data Link with PLC
MS-QZ UNIT A
・ One slave station occupies 5 words independently of connection to slave stations, and the devices are
fixed in the order of slave station addresses.
・ The devices are stored, starting from the lowest byte.
・ For the interpretation of data of each device, refer to the instruction manual for a slave station to
be used.
・ In the case of communication error of a slave station, the applicable device is retained. (It cannot be
forcedly written because of being overwritten.)
・ Only at the startup of this unit, all devices are cleared. (Zero clear)

5.4.2 Slave station communication information 1 bit × 64 stations = 4 words

This information contains a status flag of communication with a slave station.
Device b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
K0320 10h 0Fh 0Eh 0Dh 0Ch 0Bh 0Ah 09h 08h 07h 06h 05h 04h 03h 02h 01h
K0321 20h 1Fh 1Eh 1Dh 1Ch 1Bh 1Ah 19h 18h 17h 16h 15h 14h 13h 12h 11h
K0322 30h 2Fh 2Eh 2Dh 2Ch 2Bh 2Ah 29h 28h 27h 26h 25h 24h 23h 22h 21h
K0323 40h 3Fh 3Eh 3Dh 3Ch 3Bh 3Ah 39h 38h 37h 36h 35h 34h 33h 32h 31h
・ One slave station occupies 1 bit independently of connection to slave stations, and the devices are fixed
in the order of slave station addresses.
・ In the presence of a slave station's response to a communication (ACK), 1 (communication) is set for the
applicable address.
・ In the absence of a slave station's response to a communication (ACK) in continuous 2 cycles of polling,
0 (no communication) is set to the applicable address.
・ Only at the startup of this unit, all devices are cleared. (Zero clear)

5.4.3 Running information 1 word

This information contains a running status of this unit.
Device b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
K0324 Unit setting 0 0 0 0 * * * * * * * *

Bit Data name 0 1 Remarks

B0 Operation ready Initializing Ready
B1 Fault (Operation Normal Fault
continuation)
B2 Fault (Operation Normal Fault
stop)
B3 Communication No Write polling found
control 1
B4 Communication No Read polling found
control 2
B5 Communication No Setting request polling found
control 3
B6 Communication No Running history request
control 4 polling found
B7 CDL control No In running
B8 Not used - -
B9 Not used - -
B10 Not used - -
B11 Not used - -
B12
B13 Unit information 0h: UNIT A Other: Not used
B14
B15
・ One slave station occupies 1 word independently of connection to slave stations.

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5.Data Link with PLC
MS-QZ UNIT A
5.4.4 Error information 1 word
This information contains an error status flag of this unit.
Device b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
K0325 Slave station address with address error * 0 * * * * * *

Bit Data name 0 1 Remarks

b0 Address error No Yes
b1 Parameter error No Yes
b2 Transmission I/F No Yes
error
b3 Transmission bus No Yes
error
b4 Transmission No Yes
power supply
error
b5 Slave station No Yes
absence error
b6 Not used - -
b7 Not used - -
b8
b9 Maximum address 00h : Error station No
b10 at the occurrence Except 00h : Error station Yes
b11 of address error ・When the relevant station with an error has several
b12 addresses, a larger address is displayed.
b13
b14
b15
・ One slave station occupies 1 word independently of connection to slave stations.

5.4.5 Setting status information 1 bit × 64 slave stations = 4 words

This information contains a setting change flag from EMC.

Device b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0

K0326 10h 0Fh 0Eh 0Dh 0Ch 0Bh 0Ah 09h 08h 07h 06h 05h 04h 03h 02h 01h
K0327 20h 1Fh 1Eh 1Dh 1Ch 1Bh 1Ah 19h 18h 17h 16h 15h 14h 13h 12h 11h
K0328 30h 2Fh 2Eh 2Dh 2Ch 2Bh 2Ah 29h 28h 27h 26h 25h 24h 23h 22h 21h
K0329 40h 3Fh 3Eh 3Dh 3Ch 3Bh 3Ah 39h 38h 37h 36h 35h 34h 33h 32h 31h
・ In these devices, data is set only at the setting change from EMC (CDL-Z mode 1-3). They are not used
in other models.
・ One slave station occupies 1 bit independently of connection to slave stations, and the devices are fixed
in the order of slave station addresses.
・ When receiving the change of setting information (change report), "1" is set to the bit of the relevant
station number.
・ Definition of change: "When data is stored in the relevant device for setting information, and a command
request for the same code is not being executed"
・ A setting change request (Xn4) turns "OFF→ON" concurrently with the above.

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MS-QZ UNIT A
5.4.6 Setting information 8 words × 64 slave stations = 512 words
This information contains setting data from EMC.

Example of buffer memory data

Slave station
Device address b15 b7 b0 Slave station type
K0330 01h 00h 00h CDL-V
: : :
K0338 02h 00h 00h CDL-Z(V mode)
: : :
K0346 03h 00h 00h CDL-Z(Z mode)
: : :
K0354 04h 8word EMC(CDL-Z mode 1-3)
K0355
K0356
K0357
K0358
K0359
K0360
K0361
K0362 05h 00h 00h EMC(CDL-Z mode 4-7)
: : :
K0370 06h 00h 00h H-A7CDL
: : :
K0386 08h 00h 00h LSZ-MRU
: : : :
K0834 40h 00h 00h Not connected
K0835 00h 00h
K0836 00h 00h
K0837 00h 00h
K0838 00h 00h
K0839 00h 00h
K0840 00h 00h
K0841 00h 00h
・ In these devices, data is set only at the setting change from EMC (CDL-Z mode 1-3). They are not used
in other models.
・ One slave station occupies 8 words independently of connection to slave stations, and the devices are
fixed in the order of slave station addresses.
・ The devices are stored, starting from the lowest byte.
・ For the interpretation of data of each device, refer to the instruction manual for a slave station to
be used.
・ In the case of communication error of a slave station, the applicable device is retained. (It cannot be
forcedly written because of being overwritten.)
・ Data is stored only when a command code is "COh" and the code itself is not stored.
・ Only at the startup of this unit, all devices are cleared. (Zero clear)

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5.Data Link with PLC
MS-QZ UNIT A

5.4.7 Running history information 8 words × 64 slave stations = 512 words

This information contains running history data from EMC.

Example of buffer memory data

Slave station
Device address b15 b7 b0 Slave station type
K0842 01h 00h 00h CDL-V
: : :
K0850 02h 00h 00h CDL-Z(V mode)
: : :
K0858 03h 00h 00h CDL-Z(Z mode)
: : :
K0866 04h 8word EMC(CDL-Z mode 1-3)
K0867
K0868
K0869
K0870
K0871
K0872
K0873
K0874 05h 00h 00h EMC(CDL-Z mode 4-7)
: : :
K0882 06h 00h 00h H-A7CDL
: : :
K0898 08h 00h 00h LSZ-MRU
: : : :
K1346 40h 00h 00h Not connected
K1347 00h 00h
K1348 00h 00h
K1349 00h 00h
K1350 00h 00h
K1351 00h 00h
K1352 00h 00h
K1353 00h 00h
・ In these devices, data is set only at the setting change from EMC (CDL-Z mode 1-3). They are not used
in other models.
・ One slave station occupies 8 words independently of connection to slave stations, and the devices are
fixed in the order of slave station addresses.
・ The devices are stored, starting from the lowest byte.
・ For the interpretation of data of each device, refer to the instruction manual for a slave station to
be used.
・ In the case of communication error of a slave station, the applicable device is retained. (It cannot be
forcedly written because of being overwritten.)
・ Data is stored only when a command code is "COh" and the code itself is not stored.
・ Only at the startup of this unit, all devices are cleared. (Zero clear)

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5.Data Link with PLC
MS-QZ UNIT A

5.4.8 Attribute information 1 word × 64 slave stations = 64 words

This information contains a running status flag of a slave station.

Example of buffer memory data

Slave station
Device address b15 b7 b0 Slave station type
K1354 01h 8bit 00h CDL-V
K1355 02h 8bit 00h CDL-Z(V mode)
K1356 03h 8bit 00h CDL-Z(Z mode)
K1357 04h 8bit 00h EMC(CDL-Z mode 1-3)
K1358 05h 8bit 00h EMC(CDL-Z mode 4-7)
K1359 06h 8bit 00h H-A7CDL
K1360 00h 00h
K1361 08h 8bit Error code LSZ-MRU
: : : :
K1417 40h 00h 00h Not connected
・ One slave station occupies 1 word independently of connection to slave stations, and the devices are fixed
in the order of slave station addresses.
・ Only at the startup of this unit, all devices are cleared. (Zero clear)
・ The devices are stored, starting from the lowest byte. (Except LSZ-MRU)
・ Lower 8 bits (error code) are effective only in the case of LSZ-MRU. For details, refer to the instruction
manual for LSZ-MRU.
・ Flags in upper 8 bits are described below.
However, the content of the flags may vary by slave station type. For details, refer to the instruction
manual for a slave station to be used.
b15 b14 b13 b12 B11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
* * * * * * * * Error code (only LSZ-MRU)

b8 : Address error 0: Normal (Recovery) 1: Faulty

→There is multiple-definition in address setting.
→It automatically recovers by the removal of the cause. The setting change to the proper address
and restart may be necessary to remove the cause.
b9 : Parameter error 0: Normal (Recovery) 1: Faulty
→There is inconsistency in parameter setting between the slave station (system configuration)
and PLC.
→It automatically recovers by the removal of the cause. Resetting is required when parameter
setting is incorrect.
When the slave station type is incorrect, it is necessary to replace the slave station with
a proper one and restart (including resetting) the PLC.
b10 : CPU error 0: Normal (Recovery) 1: Faulty
→An error occurs in the internal CPU of the slave station. It represents a status in which
communication with the station is not normally made.
→It automatically recovers by the presence of communication with the slave station. It is
necessary to replace the slave station with a new one to remove the cause.
Due to pulse setting caused by temporary runaway fault, retention on the PLC side is
recommended.
b11 : Command request sending error 0: Normal 1: Sending error
→Command request sent from the PLC is neglected by the slave station. (without ACK response)
→After the occurrence of the error, it will recover if the slave station responds to command
request sent from the PLC.

b12 : Sub-slave station address error 0: Normal (Recovery) 1: Fault

→There is multiple-definition in the setting an address of the sub-slave station that
communicates with EMC-Z or EMC-A and EMC-B.
→It automatically recovers by the removal of the cause. The setting change to the proper address
and restart may be necessary to remove the cause.

b13 : Sub-slave communication status 0: No communication 1: Communication

It represents a communication status of the sub-slave station that communicates with EMC-Z,

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5.Data Link with PLC
MS-QZ UNIT A
EMC-A, or EMC-B.

b14 : Setting received 0: No 1: Yes

→It represents a storage status of setting information from EMC－Z, EMC-A, or EMC-B.
→It is retained until restart of this unit after being stored. (unable to reset)

b15 : Running history received 0: No 1: Yes

→It represents a storage status of running history information from EMC－Z, EMC-A, or EMC-B.
→It is retained until restart of this unit after being stored. (unable to reset)

5.4.9 Command status information 1 bit × 64 slave stations = 4 words

This information contains a command change flag from a slave station.
Device b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
K1418 10h 0Fh 0Eh 0Dh 0Ch 0Bh 0Ah 09h 08h 07h 06h 05h 04h 03h 02h 01h
K1419 20h 1Fh 1Eh 1Dh 1Ch 1Bh 1Ah 19h 18h 17h 16h 15h 14h 13h 12h 11h
K1420 30h 2Fh 2Eh 2Dh 2Ch 2Bh 2Ah 29h 28h 27h 26h 25h 24h 23h 22h 21h
K1421 40h 3Fh 3Eh 3Dh 3Ch 3Bh 3Ah 39h 38h 37h 36h 35h 34h 33h 32h 31h
・ One slave station occupies 1 bit independently of connection to slave stations, and the devices are fixed
in the order of slave station addresses.
・ When receiving the change of command information (change report), "1" is set to the bit of the relevant
station number.
・ Definition of change: "When data is stored in the relevant device for command report information"
・ A command change request (Xn5) turns "OFF→ON" concurrently with the above.

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5.Data Link with PLC
MS-QZ UNIT A
5.4.10 Command report information 2 words × 64 slave stations = 128 words
This information contains command report data from a slave station.

Example of buffer memory data

Slave station
Device address b15 b7 b0 Slave station type
K1422 01h 00h 00h CDL-V
K1423 00h 00h
K1424 02h 4byte CDL-Z(V mode)
K1425
K1426 03h 4byte CDL-Z(Z mode)
K1427
K1428 04h 4byte EMC(CDL-Z mode 1-3)
K1429
K1430 05h 4byte EMC(CDL-Z mode 4-7)
K1431
K1432 06h 00h 00h H-A7CDL
K1433 00h 00h
K1434 00h 00h
K1435 00h 00h
K1436 08h 4byte LSZ-MRU
K1437
: : : :
K1548 40h 00h 00h Not connected
K1549 00h 00h
・ One slave station occupies 2 words independently of connection to slave stations, and the devices are
fixed in the order of slave station addresses.
・ The devices are stored, starting from the lowest byte.
・ For the interpretation of data of each device, refer to the instruction manual for a slave station to
be used.
・ In the case of communication error of a slave station, the applicable device is retained. (It cannot be
forcedly written because of being overwritten.)
・ Only at the startup of this unit, all devices are cleared. (Zero clear)
・ A CDL-Z slave station, and EMC-Z, EMC-A, or EMC-B slave station store data only when a command code is
"D0h to DFh", and also the codes.
First word Code
Second word

・ An LSZ-MRU slave station stores data only when a command code is "98h", "99h", "C7h", "C8h", "CAh", and
"CBh", and also the code. (A B/NET recognition code "FFh" is neglected.)
First word Code
Second word

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MS-QZ UNIT A

5.4.11 Command result information 1 bit × 64 slave stations = 4 words

This information contains a result flag of command request to a slave station.
Device b15 B14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
K1550 10h 0Fh 0Eh 0Dh 0Ch 0Bh 0Ah 09h 08h 07h 06h 05h 04h 03h 02h 01h
K1551 20h 1Fh 1Eh 1Dh 1Ch 1Bh 1Ah 19h 18h 17h 16h 15h 14h 13h 12h 11h
K1552 30h 2Fh 2Eh 2Dh 2Ch 2Bh 2Ah 29h 28h 27h 26h 25h 24h 23h 22h 21h
K1553 40h 3Fh 3Eh 3Dh 3Ch 3Bh 3Ah 39h 38h 37h 36h 35h 34h 33h 32h 31h
・ One slave station occupies 1 bit independently of connection to slave stations, and the devices are fixed
in the order of slave station addresses.
・ When receiving a response to command request, "0" is set to the bit of the relevant station number.
・ When it cannot receive a response to command request, "1" is set to the bit of the relevant station number.
・ Exclusive communication completed (Xn2) turns "OFF→ON" concurrently with the above.
・ Only at the startup of this unit, all devices are cleared. (Zero clear)

5.4.12 Command response information 2 words × 64 slave stations = 128 words

This information contains command response data from a slave station.

Example of buffer memory data

Slave station
Device address b15 b7 b0 Slave station type
K1554 01h 00h 00h CDL-V
K1555 00h 00h
K1556 02h 4byte CDL-Z(V mode)
K1557
K1558 03h 4byte CDL-Z(Z mode)
K1559
K1560 04h 4byte EMC(CDL-Z mode 1-3)
K1561
K1562 05h 4byte EMC(CDL-Z mode 4-7)
K1563
K1564 06h 4byte H-A7CDL
K1565
K1566 00h 00h
K1567 00h 00h
K1568 08h 4byte LSZ-MRU
K1569
: : : :
K1680 40h 00h 00h Not connected
K1681 00h 00h
・ One slave station occupies 2 words independently of connection to slave stations, and the devices are
fixed in the order of slave station addresses.
・ The devices are stored, starting from the lowest byte.
・ For the interpretation of data of each device, refer to the instruction manual for a slave station to
be used.
・ In the case of communication error of a slave station, the applicable device is retained. (It cannot be
forcedly written because of being overwritten.)
・ Only at the startup of this unit, all devices are cleared. (Zero clear)
・ A CDL-Z slave station, and EMC-Z, EMC-A, or EMC-B slave station store data only in the case of command
codes except "C0h, C1h" and "D0h to DFh", and also the codes.
First word Code
Second word

・ An H-A7CDL slave station stores 4-byte data independently of command codes.

First word Code
Second word
・ An LSZ-MRU slave station stores data only in the case of command codes except "98h", "99h", "C7h", "C8h",
"CAh", and "CBh", and also the codes. (A B/NET recognition code "FFh" is neglected.)
First word Code
Second word

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5.Data Link with PLC
MS-QZ UNIT A

5.4.13 Output information 2 words × 64 slave stations = 128 words

This information contains output data to a slave station.

Example of buffer memory data

Slave station
Device address b15 b7 b0 Slave station type
K1700 01h 00h 1byte CDL-V
K1701 00h 00h
K1702 02h 00h 1byte CDL-Z(V mode)
K1703 00h 00h
K1704 03h 2byte CDL-Z(Z mode)
K1705 00h 00h
K1706 04h 00h 1byte EMC(CDL-Z mode 1-3)
K1707 00h 00h
K1708 05h 00h 1byte EMC(CDL-Z mode 4-7)
K1709 00h 00h
K1710 06h 2byte H-A7CDL
K1711 00h 00h
K1712 00h 00h
K1713 00h 00h
K1714 08h 2byte LSZ-MRU
K1715 00h 00h
: : : :
K1826 40h 00h 00h Not connected
K1827 00h 00h
・ One slave station occupies 2 words independently of connection to slave stations, and the devices are
fixed in the order of slave station addresses.
・ Each device is stored, starting from the least significant bit (b0).
・ For the interpretation of data of each device, refer to the instruction manual for a slave station to
be used.
Ensure to set 00h to free devices unrelated to control power to prevent the sending of unnecessary output
data.
・ Output data is sent to the slave station only when each device has data variations.
When resetting output data in polling, select write polling execution.
・ Only at the startup of this unit, all devices are cleared. (Zero clear)
・ This data is undefined when each device is not used.
When the devices are not used, ensure to set 00h to the device to prevent the sending of unnecessary
output data that is caused by the change or addition of a slave station.

・When turning on the power for the slave station, check the status of the output
! CAUTION information.
Some programs may cause malfunction (sudden starting).
・Output processing is executed even during address error or parameter error on
the slave station. Even during non-connection or communication errors, output
processing is continued. Take safety measures for some programs, such as output
clear at the above errors.

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5.Data Link with PLC
MS-QZ UNIT A
5.4.14 Command request information 1 bit × 64 slave stations = 4 words
This information contains the relevant station number flag that executes a command request to a slave station.
Device b15 B14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
K1828 10h 0Fh 0Eh 0Dh 0Ch 0Bh 0Ah 09h 08h 07h 06h 05h 04h 03h 02h 01h
K1829 20h 1Fh 1Eh 1Dh 1Ch 1Bh 1Ah 19h 18h 17h 16h 15h 14h 13h 12h 11h
K1830 30h 2Fh 2Eh 2Dh 2Ch 2Bh 2Ah 29h 28h 27h 26h 25h 24h 23h 22h 21h
K1831 40h 3Fh 3Eh 3Dh 3Ch 3Bh 3Ah 39h 38h 37h 36h 35h 34h 33h 32h 31h
・ One slave station occupies 1 bit independently of connection to slave stations, and the devices are fixed
in the order of slave station addresses.
・ Set "1" to the relevant station number bit in a slave station requesting a command.
・ If "OFF→ON" is provided to exclusive communication request (Y(n+1)2), sending processing is executed.
Hence, it is necessary to complete writing command request information and command output information
in a buffer memory device until turning the exclusive communication request (Y(n+1)2) ON.
・ If receiving (response from a slave station) processing is completed, exclusive communication completed
(Xn2) becomes "OFF→ON".

5.4.15 Command output information 2 words × 64 slave stations = 128 words

This information contains command output data to a slave station.

Example of buffer memory data

Slave station
Device address b15 b7 b0 Slave station type
K1832 01h 00h 00h CDL-V
K1833 00h 00h
K1834 02h 2byte CDL-Z(V mode)
K1835 00h 00h
K1836 03h 2byte CDL-Z(Z mode)
K1837 00h 00h
K1838 04h 2byte EMC(CDL-Z mode 1-3)
K1839 00h 00h
K1840 05h 2byte EMC(CDL-Z mode 4-7)
K1841 00h 00h
K1842 06h 4byte H-A7CDL
K1843
K1844 00h 00h
K1845 00h 00h
K1846 08h 2byte LSZ-MRU
K1847 00h 00h
: : : :
K1958 40h 00h 00h Not connected
K1959 00h 00h
・ One slave station occupies 2 words independently of connection to slave stations, and the devices are
fixed in the order of slave station addresses.
・ Transfer is performed, starting from the lowest byte for each device.
・ The content at the same code may vary by slave station type. For command codes, refer to the instruction
manual for a slave station to be used.
・ Only at the startup of this unit, all devices are cleared. (Zero clear)
・ This data is undefined when each device is not used.
When the devices are not used, ensure to set 00h to the device to prevent the sending of unnecessary output
data that is caused by the change or addition of a slave station.
・ CDL-Z and EMC (CDL-Z mode 1-3 and 4-7) slave stations support two (byte length of 1 byte or 2 bytes) command
requests, and send only lower 1 byte when upper bytes are 00h.
・ An H-A7CDL slave station ensures to send a 4-byte command request except a command code "02h".
When a command code is "02h", it sends a 1-byte command request.
・ LSZ-MRU supports three types of requests.
1) When lower bytes are 02h, it sends (request) 1-byte command output data to a slave station.
First word 00h 02h

2) When upper bytes are 00h (except when lower code is 02h), it sends (request) to a slave station 1-byte
command output data with B/NET recognition code. A range of data is 0040h to 00FFh.

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5.Data Link with PLC
MS-QZ UNIT A
First word 00h Code

3) In the case of upper bytes other than 00h, it sends (request) to a slave station 2-byte command output
data with B/NET recognition code. A range of data is 0140h to FFFFh.
First word Code (upper) Code (lower)

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5.Data Link with PLC
MS-QZ UNIT A

5.4.16 Simultaneous transmission information 1 word

This information contains simultaneous transmission output data to a slave station.
Slave station
Device address b15 b7 b0 Slave station type
K1960 Not specified Group number Output data EMC(CDL-Z mode 1-3)
・ One slave station occupies 1 word independently of connection to slave stations.
・ For the applicability of simultaneous transmission and the interpretation of in-address data, refer to
the instruction manual for a slave station to be used.
・ Set a group number (range of 00h to FFh) and output data to upper and lower bytes, respectively.
・ If "OFF→ON" is provided to simultaneous transmission request (Y(n+1)3), sending processing is executed.
Hence, it is necessary to complete writing information in a buffer memory device until turning the
simultaneous transmission request (Y(n+1)3) ON.
・ When sending processing is completed, simultaneous transmission completed (Xn3) becomes "OFF→ON".
・ Only at the startup of this unit, all devices are cleared. (Zero clear)

5.4.17 Parameter setting 1 word × 64 slave stations = 64 words

This information contains parameter setting data by slave station type.

Example of buffer memory data

Slave station
Device address b15 b7 b0 Slave station type
K1961 01h 00h 00h CDL-V
K1962 02h 00h 01h CDL-Z(V mode)
K1963 03h 00h 02h CDL-Z(Z mode)
K1964 04h 00h 03h EMC(CDL-Z mode 1-3)
K1965 05h 00h 01h EMC(CDL-Z mode 4-7)
K1966 06h 00h 04h H-A7CDL
K1967 00h 00h
K1968 08h 00h C5h LSZ-MRU
:
K2024 40h 00h 00h Not connected
・ One slave station occupies 1 word independently of connection to slave stations, and the devices are fixed
in the order of slave station addresses.
・ Store data in lower 8 bits of each device.
・ Only at the startup of this unit, all devices are cleared. (Zero clear)
・ At OFF→ON of parameter setting request (Y(n+1)1), parameter setting becomes effective.
・ At the completion of parameter setting, parameter setting completed (Xn1) becomes ON.
・ This data is undefined when each device is not used.
When the devices are not used, ensure to set 00h to the device to prevent the sending of unnecessary output
data that is caused by the change or addition of a slave station.

5.4.18 Setting of the number of slave stations for communication 1 word

This information contains maximum setting data for the number of slave stations for communication.
Device b15 b7 b0
K2025 00h Maximum station number
・ One slave station occupies 1 word independently of connection to slave stations
・ Store data in lower 8 bits of each device.
・ A range of setting data for maximum station number is 10h to 40h. 40h is recognized when the value is
out of the setting range.
・ Only at the startup of this unit, all devices are cleared. (Zero clear)

5-17
6. Self-Diagnosis Function
MS-QZ UNIT A
Chapter 6 Self-Diagnosis Function
This chapter describes the self-diagnosis function of this unit.

6.1 Bus low status detection and bus separation functions

This unit provides the functions of bus low status detection and bus separation. These functions minimize the
effect of single fault (internal fault).
(Point) Due to that some types of slave stations do not have the functions, be careful to it during
system configuration.

(1) Functionality
・ This function monitors a low-level retention time of a signal line S on a transmission bus in the
inside of this unit, determines an error when the status of the signal line does not recover within
a determination time (200ms to 500ms) (during continuation of fault), and separates this unit from
the transmission bus by relay contact.

(2) Effect on the system

・ When the signal line is kept at the low level, communication is disabled.
・ In the equipment making up the system, a fault mode in which an internal fault makes the signal
line fix to a low level is considered to occur.
This system or the slave station provides the functions of bus low status detection and bus
separation to minimize the effect on the system that is associated with the fault caused by low-level
fixing of the signal line in the inside of the equipment.

This unit
Fault
(separation) Transmission
bus

Slave Slave Slave

station station station

Fault
(separation)

・If the master or slave station detects a bus low status by its self-diagnosis function
! CAUTION (at single fault), it will separate the bus.
† When several LSZ slave stations are placed on the same base unit (LSZ-B), all the slave
stations are separated. Therefore, be careful during the system design.

6-1
6. Self-Diagnosis Function
MS-QZ UNIT A

6.2 Error detection and output open functions of PLC

This unit provides the error detection and output open functions of the PLC.
The functions minimize the effect on the system in the PLC, between the PLC and this unit, and from this unit's
single fault (internal fault) to normal transmission.

(1) Functionality
・ This function monitors a stopping time for a linking status between the PLC and this unit (without the
execution of FROM/TO command), determines an error when the linking status does not recover within a
determination time (10 seconds) (during continuation of fault), and opens an output to the slave station
(initialization). Linking stop that is caused by "STOP" of the PLC is also determined to be an error.
・ Immediately after the determination of the error, it sends cleared (00h) output data to a slave station.
The station opens the output by cleared data. Output open is executed for all slave stations (a range
of mode 1 execution is 01h to 40h of slave station address).

(2) Setting (For setting, refer to the section 4.2.)

・ The output open function only sets cleared data, so only status control is effective.
Note that the function does not work in pulse control (self-retention type on the outside of the slave
station).
Set a setting switch (SW2) to "Retention" (not select the function) when not requiring the function.

(3) Effect on the system

・When the communication function of the CDL in this unit is normal, and only the communication function
of the PLC is abnormal, communication control is disabled.
Be very careful to the case where only transmission controls slave stations (load control) in the applied
system.

・This unit detects an error of the communication function of the PLC from the stop of the linking status
in (1). At the occurrence of an error, the execution of FROM/TO command is stopped to enable the start
of the output open function through the PLC's program.
Also, be careful to the error detection and output open functions of the slave station.

Upper This unit

controller Normal (CDL) CDL bus

Slave station
(Fault cause) Fault (output open)
・ Fault on PLC (CPU unit etc.)
・ For the faults of upper controllers and buses, a program is required in the PLC.

6-2
6. Self-Diagnosis Function
MS-QZ UNIT A

6.3 Error detection and output open functions of slave station (restrictions at the application of this unit)
A slave station provides the error detection and output open functions of this unit.
The functions minimize the effect on the system in the PLC, between the PLC and this unit, and from this unit's
single fault (internal fault) to transmission stop.
(Point) When selecting a determination time 7s, restrict a range of slave stations to 01h to 20h (up
to 32 stations) before applying the time.
→For the restriction of the range of slave stations, refer to the section 5.4.18.

(1) Functionality
・The slave station monitors a stopping time for a linking status between this unit and the slave station
(without the execution of transmission from this unit). It determines an error when the linking status
does not recover within a determination time (during continuation of fault), and open the output
(initialization).
Under "STOP" of the PLC, this unit does not stop the linking.

・In the determination time, the selection of "7s" and "15s" or "Arbitrary setting of 7 to 160s" and "time
fixed" depends on slave stations (refer to the following table). For details of the determination time,
refer to the instruction manual for a slave station to be used.
Example of slave station Setting of time for detection of no response from master station
LS-44GSX, -08GSX, etc. 7s fixed
LSZ-44, -80, -08, EMC-Z, -A, etc. OFF, 7s, and 15s
EMC-B etc. OFF, and 7s to 160s
H-A7CDL etc. OFF, 5s, 7s, 15s, 20s, 25s, 30s, 40s, 50s, 60s, and 160s

・Immediately after the determination of the error, the slave station clears (resets) its internal output
data. The station opens the output by clear. The determination time is selected by the slave station by
setting of this unit, as shown below. Be careful to the application of a slave station without selection
(with time fixed).

(2) Selection of functions

・The output open function is effective only in status control due to the execution of clear of output
data by the slave station.
Note that the function does not work in pulse control (self-retention type on the outside of the slave
station).

・When not requiring the function, set the slave station to not select the function, or adopt a slave station
without the function.

(3) Effect on the system

・When the communication function of the CDL in this unit is abnormal, communication control is disabled.
Be very careful to the case where only transmission controls slave stations (load control) in the applied
system.
The output open function works based on the specifications and setting of the slave station. During the
design of the system, it should be noted that the setting depends on modes of this unit.

Upper This unit

controller CDL bus

Slave station
(Fault cause)
・ Power discontinuity of this unit Fault (output open)
・ Fault of this unit Depending on the specifications
・ Fault of CDL bus etc. and setting of slave station

6-3
6. Self-Diagnosis Function
MS-QZ UNIT A

・ When the output of the slave station is opened by its self-diagnosis function
! CAUTION (transmission stop = fault), check the setting of this unit and the specifications
of the slave station.
† During system design, note that some settings are unsupported or fixed depending on
the specification of a slave station.

6-4
6. Self-Diagnosis Function
MS-QZ UNIT A

6.4 Testing function

This unit provides the function of testing.
The function of testing can be selected only in the same setting of SW1 and SW2.
When selecting the function, separate this unit from the system and provide a "STOP" status to the PLC.

(1) Selection of test items

Select test items by SW2. Select the items by setting of "A to F" by SW2.
To change the test items, it is necessary to restart this unit after resetting SW1 and SW2.

(2) Functionality
The function has the following 6 test items.
① Display test
② Setting test
③ Hardware test
④ I/O operation test
⑤ CDL transmission test (sending function)
⑥ CDL transmission test (receiving function)

6.4.1 Display test

Lighting and extinction of LED display in this unit is tested.
(1) Testing step
Step 1: Restart this unit with SW2="A" and SW1="A".
(2) Test content
Repeat all lighting and all extinction of the LED display in a cycle of 1s.
(3) Check items
Visually check that the relevant LED displays for running status (RUN/C-RUN/C-ERR/Q.CPU) and status
displays (1 to 8) operate as indicated by the test content.

6.4.2 Setting test

The setting of SW1/SW2 in this unit is tested.
(1) Testing step
Step 1: Restart this unit with SW2="B" and SW1="B".
(2) Test content
Indicate the setting of each switch using LED display. During testing, the switches can be changed.
Provide setting values for SW1 and for SW2 to status displays of 1 to 4 and of 5 to 8 in LED display,
respectively.
The LED display represents binary numbers of positive logic.
Status 8 7 6 5 4 3 2 1
display
Setting b3 b2 b1 b0 b3 b2 b1 b0
value
Setting SW2 (setting range of 0 to F) SW1 (setting range of 0 to F)
(3) Check items
Visually check that the settings of the switches are consistent with the LED display of the setting values.

6-5
6. Self-Diagnosis Function
MS-QZ UNIT A
6.4.3 Hardware test
The operation of parts in the interior of this unit is tested.
(1) Testing step
Step 1: Restart this unit with SW2="C" and SW1="C".
(2) Test content
Represent the results of the test for the operation of the parts in LED display. When the result of the
test is abnormal, the relevant LED display turns off.
・ RAM1 : Check of reading and writing to internal work memory (RAM)
・ RAM2 : Check of reading and writing to internal shared memory (RAM)
・ Transmission: Check of access to internal transmission CPU
・ ROM : Check of sum to internal program (ROM)
・ SW3 : Check of unit setting (SW3) ✝ The LED display represents binary numbers of positive
logic.
Status 8 7 6 5 4 3 2 1
display
Tested parts SW3 ROM Transmission RAM2 RAM1
(3) Check items
Visually check that the results of testing are normal (lighting of the (relevant LED) display). If the
unit setting is "0", it is normal.

6-6
6. Self-Diagnosis Function
MS-QZ UNIT A

6.4.4 I/O operation test

I/O signals between this unit and the PLC are tested.
(1) Testing step
Step 1: Restart this unit with SW2="D" and SW1="D".
Step 2: Set to SW1="D" and SW2="D" after start. (Y10 to Y17)
Set to SW1="D" and SW2="C" after start. (Y18 to Y1F)
Set to SW1="D" and SW2="B" after start. (X00 to X07)
Set to SW1="D" and SW2="A" after start. (X08 to X0F)
(2) Test content
The functions of input and output signals in this unit are tested.
・ Test for output signals (Y) (Y10 to Y1F)
・ Test for input signals (X) (X01 to X0F)
(3) Check items
Output signals (Y) Operate ON/OFF by a peripheral device (GX-Developer etc.) and check the operation
in LED display.
Input signals (X) Check all ON (1s retained) → all OFF(1s retained) by a peripheral device (GX-Developer
etc.)
(Note) X00 test is disabled.

① When setting to SW1="D"and SW2="D" after start

Name Content Lighting Blinking Extinction Remarks
1 Y10
2 Y11
3 Y12
4 Y13 Output signal (Y) - Output signal (Y)
5 Y14 "ON" "OFF"
6 Y15
7 Y16
8 Y17
② When setting to SW1="D"and SW2="C" after start
Name Content Lighting Blinking Extinction Remarks
1 Y18
2 Y19
3 Y1A
4 Y1B Output signal (Y) - Output signal (Y)
5 Y1C "ON" "OFF"
6 Y1D
7 Y1E
8 Y1F
③ When setting to SW1="D"and SW2="B" after start
Name Content Lighting Blinking Extinction Remarks
1 X00 - - - Test disabled
2 X01
3 X02
4 X03 Input signal (X) - Input signal (X)
5 X04 "ON" "OFF"
6 X05
7 X06
8 X07
④ When setting to SW1="D"and SW2="A" after start
Name Content Lighting Blinking Extinction Remarks
1 X08
2 X09
3 X0A
4 X0B Input signal (X) - Input signal (X)
5 X0C "ON" "OFF"
6 X0D
7 X0E
8 X0F

6-7
6. Self-Diagnosis Function
MS-QZ UNIT A

6.4.5 CDL transmission test (sending function)

The function of sending to a transmission bus in this unit is tested.
(1) Testing step
The sending function of this unit is tested with the use of other unit with the same function.
Step 1: Provide a transmission power supply (24VDC) between terminal block P (power line) and N (neutral
line).
Step 2: Connect a transmission bus between this unit and other unit with the same function.
Step 3: Set this unit to SW2="E" and SW1="E".
Step 4: Set other unit with the same function to SW2="F" and SW1="F".
Step 5: Restart simultaneously.
(2) Test content
Test data sent from this unit is received by other unit with the same function.
The test data displays a status of 1 to 8 at 00h to FFh in LED. The LED display represents binary numbers
of positive logic.
At the completion of sending at 00h to FFh, sending is started at 00h again.
At the occurrence of an error, the test is discontinued.
(3) Check items
Visually check normal completion (lighting of C-RUN) of the test result.
When the test result is abnormal, the sending test is discontinued.

6.4.6 CDL transmission test (receiving function)

The function of receiving from a transmission bus in this unit is tested.
(1) Testing step
The receiving function of this unit is tested with the use of other unit with the same function.
Step 1: Provide a transmission power supply (24VDC) between terminal block P (power line) and N (neutral
line).
Step 2: Connect a transmission bus between this unit and other unit with the same function.
Step 3: Set this unit to SW2="F" and SW1="F".
Step 4: Set other unit with the same function to SW2="E" and SW1="E".
(2) Test content
Test data sent from other unit with the same function is received by this unit.
The test data displays a status of 1 to 8 at 00h to FFh in LED. The LED display represents binary numbers
of positive logic.
At the completion of receiving at 00h to FFh, receiving is started at 00h again.
At the occurrence of an error, the test is discontinued.
(3) Check items
Visually check normal completion (lighting of C-RUN) of the test result.
When the test result is abnormal, C-RUN turns off, and C=ERR turns on. The receiving test is discontinued.

6-8
7. Maintenance and Inspection
MS-QZ UNIT A
Chapter 7 Maintenance and Inspection
This chapter describes the items that should be daily or periodically inspected, so that users can operate
this unit in a normal and best condition at any time.

7.1 Daily inspection

This section describes the items that should be daily inspected.
Item Inspection item Content Acceptance criteria Action
1 Installation of Check that this unit is placed and It is surely hooked on and Ensure to hook it on.
this unit and surely hooked on. installed.
other components
2 Connection of CDL Check that the transmission line The transmission line is surely Ensure to connect the
transmission line is surely connected to this unit. connected to it. line to it.
3 LED display status Check running status of this The status must indicate the Refer to the section
of this unit unit. following conditions. 4.3.
①RUN Lighting (Extinction represents
fault) (Note)
②SD Blinking (Lighting and Under some running
extinction represent fault) conditions, it is
③RD Lighting (Extinction represents difficult to confirm
fault) blinking.
④C-RUN Lighting (Extinction represents
fault)
⑤C-ERR. Extinction (Lighting and
blinking represent fault)
⑥Q.CPU Blinking (Extinction represents
PLC stop fault)

7.2 Periodic inspection (off-line)

This section describes the items that should be inspected once or twice 6 months to 1 year.
Carry out the inspection also when the facilities are transferred or modified, or when and wirings are changed.
For the content related to the PLC, refer to maintenance and inspection in the user's manual.
Item Inspection item Content Acceptance criteria Action
1 Installation of Move the unit and the base. They are firmly installed. When they are loose,
this unit and fasten them.
other components
2 Check the Visually check the connection. The line has no looseness and Ensure to connect the
connection of the Measure the voltage of the disconnection. line.
CDL transmission transmission power supply. The transmission power supply Replace the
line and the voltage is approximately 24VDC. transmission power
voltage of the (20 to 26V) supply with a new one.
transmission
power supply
3 Check the single Check the function by the testing The operation of the testing Refer to the section
function of this function. function is normal. 6.4.
unit When the function is
defective, replace the
unit with a new one.

・Replace the transmission power supply with a new one on a regular basis.
! CAUTION If its life expires, the transmission system will stop.
For details about replacement timing, contact the power supply manufacturer.

・Carry out periodic inspection.

REQUEST Note that the equipment may not function properly unless the periodic inspection is
performed.
・The product's expected life (not guaranteed life) is 10 years.
The product's expected life is 10 years for normal use. Replace it with new one before
its life expires. If used past its life, it may not function normally.
(If the annual average of the panel ambient temperature exceeds 25C and the annual
average of the in-panel temperature exceeds 40C, its life will be reduced. If using
it in an environment exceeding these temperatures, consult us in the planning stage.)

7-1
8.Troubleshooting
MS-QZ UNIT A
Chapter 8 Troubleshooting
This chapter describes the investigation of causes of various errors generated by the use of this unit,
and easy actions for the errors.
For the content related to the PLC, refer to troubleshooting in the CPU user's manual.

8.1 Flow for unit malfunction

This section describes a method for visual check of the unit malfunction.

Display of running LED

RUN turns off Flow when [RUN］turns off

Q.CPU turns off Flow when［Q.CPU］turns off

SD turns off Flow when［SD］turns off

RD turns off Flow when［RD］turns off

C-RUN turns off Flow when［C-RUN］turns off

8-1
8.Troubleshooting
MS-QZ UNIT A

8.1.1 Flow when [RUN] turns off

This section describes a flow when [RUN] turns off during running.

［RUN］turns off

No
Is power supplied? Supply control power
(Power supply unit)

Yes Check it by troubleshooting of the CPU

No unit in use, and recover it.
Does LED for the power
・Abnormal voltage
supply unit turn on?
・Blowout of fuse
・Operation of protection instrument
Yes

No Yes
Does [RUN] turn on?

Does only "C-ERR." LED in Yes

running LED turn on?
（excluding SD and RD）

Yes (unit fault) Yes

Does [SD] turn off?

No

H/W fault of this unit Malfunction in display circuit of this unit

Please return the product including a

detailed report on the defect to the nearest
agency or branch office, and consult it. Completed

8-2
8.Troubleshooting
MS-QZ UNIT A

8.1.2 Flow when [Q.CPU] turns off

This section describes a flow when [Q.CPU] turns off during running.

［Q.CPU］turns off

No (under STOP） Run the CPU unit and

Is the CPU unit
running? execute the program.

Yes

No Yes
Does [Q.CPU] blink?

Check command execution slot in the

Is the FROM/TO command No program.
executed to this unit? →Execute the command for this unit

Yes

No Yes
Does [Q.CPU] blink?

Is it possible to Yes Check a program scanning time in

execute load control by the CPU unit.
the CPU unit?
No

What is the program 100msec order

scanning time? (excessively long)

10msec order

H/W fault of this unit

Malfunction in display circuit of this unit

Please return the product including a

detailed report on the defect to the
nearest agency or branch office, and
consult it. Completed

(Point)
[Q.CPU] displays directly the status of execution of the FROM/TO command. The status can be judged on the
basis of lighting or blinking of [Q.CPU].
As [Q.CPU] turns on at the command execution, the status cannot be visually determined when a command
execution interval is excessively long.

8-3
8.Troubleshooting
MS-QZ UNIT A

8.1.3 Flow when [SD] turns off

This section describes a flow when [SD] turns off during running.

［SD］turns off

Yes
Does［RD］turn off? Flow when [RD] turns off

No

No
Does［C-ERR.］turn off? Flow for system malfunction
ー
Yes

Is it possible to Yes
execute load control by
the CPU unit?
No

H/W fault of this unit Malfunction in display circuit of

this unit

Please return the product including a

detailed report on the defect to the nearest
agency or branch office, and consult it.

8.1.4 Flow when [RD] turns off

This section describes a flow when [RD] turns off during running.

［RD］turns off

No
Does［C-ERR.］turn off? Flow for system malfunction

Yes

Is the transmission No
power supplied
(24VDC)?
Turn the transmission power on (review)
Yes

Yes No
Does [RD] turn off?

Yes
Is it possible to
execute load control by
the CPU unit?
No

Malfunction in display circuit of

H/W fault of this unit
this unit

Please return the product including a detailed

report on the defect to the nearest agency or branch
office, and consult it. Completed

8-4
8.Troubleshooting
MS-QZ UNIT A

8.1.5 Flow when [C-RUN] turns off

This section describes a flow when [C-RUN] turns off during running.

［C-RUN］turns off

No
Does［C-ERR.］turn off?
Flow for system malfunction

Yes

Is it possible to Yes
execute load control by
the CPU unit?

No

Malfunction in display circuit

H/W fault of this unit
of this unit

Please return the product including a detailed

report on the defect to the nearest agency or
branch office, and consult it.

8-5
8.Troubleshooting
MS-QZ UNIT A

8.2 Flow for system malfunction

This section describes a method for visual check of system malfunction.
The following [1] to [8] indicates the content of errors with LED display.

Error LED display

No (Lighting)
Serious fault
Does [C-ERR.] blink?

Yes (Blinking) Light fault

This unit continues communication

[1] Lighting Flow when address error occurs

Flow when parameter error occurs

[2] Lighting

Flow when slave station absence error

[6] Lighting occurs

This unit discontinues communication

[3] Lighting Flow when transmission I/F error

occurs

Flow when transmission bus error

[4] Lighting
occurs

Flow when transmission power error

[5] Lighting
occurs

8-6
8.Troubleshooting
MS-QZ UNIT A

8.2.1 Flow when address error occurs

[Error content] This error occurs when a master station or slave/sub-slave station address is redundantly
set.
This section describes a flow when an address error occurs during running.

Address error occurs

Does error slave station Yes Confirm the relevant

address in status LED error station
display blink?
(Note) Check by SW1 (2 to 9)
No Correct the redundant setting of slave (Note) It may be necessary to restart
station address. (reset) the relevant error slave station
(It is necessary to restart the slave even on the side of normal slave stations.
station after the change of the setting.)

Yes No
Does address error
continue?
(Note) It takes a time to release
the error.
Yes
Does [3] turn on by SW=D Master station redundant address error †
in status LED display?
†Redundant master stations on the CDL
transmission bus
No
The master station is redundant.
Turn the system power off and reconfirm the wiring.

Yes
Does transmission error Confirm the transmission bus
occur?
Yes (Unit Fault)
Yes No
Does address error
continue?
(Note) It takes a time to
H/W fault of this unit release the error.

Please return the product including a detailed report on the defect

to the nearest agency or branch office, and consult it.
Completed

(Point)
The sub-slave address error cannot be confirmed in status LED display. Check the content of the error based
on error and attribute information.

8-7
8.Troubleshooting
MS-QZ UNIT A

8.2.2 Flow when parameter error occurs

[Error content] This error occurs when the parameter setting is inconsistent with the status of connection
in a slave station.
This section describes a flow when a parameter error occurs during running.

Parameter error occurs

Yes Confirm the relevant error

Does error slave station
station
address in status LED
display blink?
(Note) Check by SW1 (2 to 9) (Note) It is necessary to make a
normal communication with the
No Confirm a parameter for each slave station and
relevant slave station after the
correct the setting of the parameter. (For details
change of the station when an error is
of parameters, refer to the section 5.4)
caused by different types of slave
stations.

No
Does parameter error
continue?
(Note) It takes a time to release the
Yes error.

Confirm the setting of the number of slave

stations for communication

Confirm the setting value of maximum station number for

the slave station, and correct it if the value is set
beyond the range. Default = 0000h: 64 stations

Yes No
Does parameter error
continue?
(Note) It takes a time to release the
H/W fault of this unit error.

Please return the product including a detailed report

on the defect to the nearest agency or branch office,
Completed
and consult it.

8-8
8.Troubleshooting
MS-QZ UNIT A

8.2.3 Flow when slave station absence error occurs

[Error content] This error occurs when the power of all slave stations becomes OFF or the connection with
all slave stations is disconnected.
This section describes a flow when a slave station absence error occurs during running.

Slave station absence error

occurs

Is P or S line between Yes

slave stations
disconnected?

No

Are there slave No Check the transmission line

stations in between slave stations
communication?

Yes
The error is detected if the absence of slave stations
available for communication on the transmission bus
continues for 15 seconds.

Yes No
Does slave station
absence error continue?

(Note) It takes a time to release

the error.

H/W fault of this unit

Please return the product including a detailed

report on the defect to the nearest agency or Completed
branch office, and consult it.

8.2.4 Flow when transmission I/F error occurs

[Error content] This error occurs at H/W fault of the transmission I/F circuit system in this unit.
Please return the product including a detailed report on the defect to the nearest agency or branch office,
and consult it.

8-9
8.Troubleshooting
MS-QZ UNIT A

8.2.5 Flow when transmission bus error occurs

[Error content] This error occurs when the signal line S on the transmission bus is fixed at low levels.
This section describes a flow when a transmission bus error occurs during running.

Transmission bus error occurs

Does [5] turn on in status

Yes
Flow when transmission power error occurs
LED display?

(Note) Confirm by SW1 (0,1)

No

Does [RD] turn off? Yes Check the S-N voltage

(S-N short-circuit）

No
Check that the S-N voltage is about 12V.
(Voltage range: About 10 to 13V)

Yes No
Does transmission bus
error continue?

H/W fault of this unit

Please return the product including a detailed report on

the defect to the nearest agency or branch office, and
Completed
consult it.

8-10
8.Troubleshooting
MS-QZ UNIT A

8.2.6 Flow when transmission power error occurs

[Error content] This error occurs when transmission power (24VDC) is not applied to the transmission bus.
Transmission bus malfunction simultaneously occurs at transmission power failure.
This section describes a flow when transmission power error occurs during running.

Transmission power error

occurs

Is 24VDC output of No (Output deterioration due to the end of the supply's useful life)
transmission power supply
normal?
Yes

No
Is the P-N wiring normal? Check the P-N voltage

Yes Check that the P-N voltage is about

24V.
(Voltage range: About 20 to 26V)

Yes No
Does transmission
power error continue?

H/W fault of this unit

Please return the product including a detailed

report on the defect to the nearest agency or
Completed
branch office, and consult it.

8-11
9. Programming
MS-QZ UNIT A
Chapter 9 Programming
This chapter describes basic programming for this unit.
The chapter includes the following communication programs.

Communication Processing content Reference

name section
Set operating environments of this unit (information about
Parameter setting connected slave stations and the maximum number of slave stations 9.1
for communication)
Normal
Periodically execute receiving (FROM)/transfer (TO) of
communication 9.2
input/output data
(Input/Output)
Exclusive
communication 1
Execute transfer (TO)/receiving (FROM) of transient data on the
(General-purpose: 9.3
request of the PLC
Transient
input/output)
Exclusive
communication 2
Execute transfer (TO) of simultaneous transmission on the request
(General-purpose: 9.4
of the PLC
Transient
input/output)
Exclusive
communication 3 Execute receiving (FROM) of setting data on the request of
(General-purpose: EMC-Z,-A,-B 9.5
Transient (†Only EMC slave station)
input/output)
Exclusive
communication 4
Execute receiving (FROM) of transient data on the request of slave
(General-purpose: 9.6
stations
Transient
input/output)

Each time chart describes direct and refresh methods of input/output control in the PLC.
(Point) The refresh method requires a processing time twice the direct one.
A scanning time by the PLC is increased if the execution of buffer memory access command (FROM/TO) from the
PLC is segmentalized.
The increase of the scanning time affects a data refresh cycle between the PLC and this unit.
Devices of this unit are collectively assigned per the same data. Hence, perform batch data processing.

・Correctly prepare programming according to this instruction manual.

! CAUTION If a mistaken slave station address is set or a mistaken memory access is made, it
will cause malfunction.

9-1
9. Programming
MS-QZ UNIT A

9.1 Setting of parameters

This section describes the setting of parameters.
For details about parameters of different slave stations, refer to the section 5.4.

Processing ・Setting of operating environment of this unit (information on connected slave stations
content and the maximum number of slave stations for communication)
† The operating environment and system configuration of this unit shall be always checked
to prevent an accident that results from on-line modification.
However, slave stations that are not communicated (power disconnection etc.) shall be
neglected.
Processing ・At startup of the system
timing ・Transfer and modification of equipment, change of connected slave station, and change of
address

Unless parameters are not set at the startup of the system, Unit READY (X08), or control running permission
flag will not turn ON.
(After the setting of the parameters, Unit READY (X08) will turn ON at the completion of check against the
system information.)
(†) When the parameters are set, Unit READY (X08) turns ON regardless of the presence or absence of a parameter
error.
It is needed that control sending should not be provided to avoid error control sending at the occurrence
of the parameter error.

(1) Data image

Transfer all data on parameter setting (K1961 to K2024) and on the setting of the number of slave stations
for communication (K2025) to this unit by TO command.
For the prevention of error setting, ensure to 0 clear Not used address (unconnected slave station) area
in the PLC.
When removing slave stations for modification, ensure to 0 clear the relevant address area in the PLC.
PLC This unit
TO
New data Old data
(Setting value) (Default=00h)

Parameter setting

(2) Example of program

†This unit is placed on the I/O slot No.0 in the PLC, and the top XY is 00
│ <Write slave station parameters and the maximum number of slave stations for communication > │
│ X0000 X000F M**** │
├─┤ ├───┤／├─┬─┤ ├─┬────────────────────────[TOP H0 K1961 R**** K65 ]┤
│ MS-QZ Hardware │ Parameter │ Parameter setting │
│ READY fault │ setting │ 01H station │
│ │ request │ │
│ │ │ │
│ │ └──────────────────────────────────────────[SET Y0011 ]┤
│ │ Parameter │
│ │ setting │
│ │ request │
│ │ X0001 │
│ └─┤ ├─┬──────────────────────────────────────────[RST Y0011 ]┤
│ Parameter │ Parameter │
│ setting
│ setting │
│ │ request │
completed
│ │ │
│ └──────────────────────────────────────────[RST M**** ]┤
│ Parameter │
│ setting │
request
・Data in the PLC is described by R (file register), but there are no problems in the use of other registers.
・The setting request is described by pulse cut processing of status signal, but there are no problems
in the use of a pulse signal.
However, ensure to do program execution by pulse processing.

9-2
9. Programming
MS-QZ UNIT A

(3) Time chart

The time chart based on the item of (2) is shown below.

① Initial time at startup of this unit

An initial time occurs at the startup of this unit. After the completion of the time, Unit READY (X08)
signal turns "ON".

Control power OFF→ON

RUN
PLC startup (RUN)
Parameter setting completed
About 3s
Setting request (Y11)
TOP
Setting completed (X01)

Setting error (X0C) ON at error→

READY(X08)

t1 t2

t1: Startup time of this unit ≒ Startup time of PLC

t2: Time for check of communication with slave station and time for collection of input information
= 12.8s

[Initial processing time]

・t1 + t2 ≒ About 16s← Time required from PLC startup time to "ON" of Unit READY (X08) signal
(The execution of parameter setting immediately after RUN of the PLC is one
requirement for the processing time.)

② Setting time during normal running of this unit

In comparison with the setting at the startup, an initial time of this unit is not required. Hence,
the setting is completed in about 1s.

Parameter setting completed

Setting request(Y11)
TOP
Setting completed(X01)

Setting error(X0C) ON at error→

READY(X08)

Setting time≒1s

[Remarks]－ － － － － － － － － － － － － － － － － － － － － － － － － － － － － － －

・The details of CDL setting errors can be confirmed in LED display and devices.
・For recovery means at the occurrence of setting error, refer to the section 8.2.
・After the correction of a mistaken setting value, a setting request is made again to complete the correction
of mistaken setting of the program. →Manual recovery
・After the change of a mistaken connected slave station to a correct slave station, setting error turns
OFF at communication recognition. →Automatic recover
・After changing a mistaken slave station address to a correct one, restart the slave station.
→Manual recovery

－ － － － － － － － － － － － － － － － － － － － － － － － － － － － － － － － －

9-3
9. Programming
MS-QZ UNIT A

9.2 Normal communication (input/output)

This section describes normal communication (input/output).
Confirm "ON" of Unit READY signal X08 in the PLC that represents running permission before executing the receiving
and sending of input/output data.
For the interpretation of data of different devices, refer to the instruction manual for a salve station to
be used.

Processing ・Periodic receiving (FROM)/transfer (TO) of input/output data

content [Receiving]
(1) The slave station sends internal data according to status change and periodic response
by input/output specifications.
(2) This unit stores received data in each input data designated regardless of the change
of the received data.
(3) The PLC periodically receives each input data (FROM).
[Transfer]
(1) The PLC periodically transfers each output data (TO).
(2) This unit monitors the change of each output data and send changed data to a slave
station.
(3) The slave station receives output data and processes the data based on output
specifications.
Processing ・After confirming "ON" of Unit READY (X08) in the PLC that represents running permission
timing ・Any time after "ON" of Unit READY (X08)

(1) Data image

① Receiving of input data (FROM)
The PLC periodically receives each input data from this unit under FROM command.
The receiving from the slave station (data renewal) is asynchronous to the receiving of the PLC (FROM).
PLC This unit Status change Slave station
FROM
Input data Received data Input data
Periodic request
(Input by slave (Default=00h) (Input by slave
station) station)
Periodic response

Input information

② Transfer of output data (TO)

The PLC periodically transfers each output data to this unit under TO command.
The transfer of the PLC (TO) is almost synchronous to the sending to the slave station.

PLC This unit Status change Slave station

TO
Output data Sent data Output data
(Output by slave (Default=00h) Periodic request (Output by slave
station) t station)
(According to the
setting conditions)
Output information

[Remarks]－ － － － － － － － － － － － － － － － － － － － － － － － － － － － － － －

・A receiving/transfer cycle is affected by a scanning time of the PLC. Minimize the time as much as possible
by programming reducing the time or by the selection in the PLC (CPU processing speed-up).

－ － － － － － － － － － － － － － － － － － － － － － － － － － － － － － － － －

9-4
9. Programming
MS-QZ UNIT A

(2) Example of program

†This unit is placed on the I/O slot No.0 in the PLC, and the top XY is 00

① Receiving of input data (FROM)

This is not related to normal communication. Receive slave station communication information, running
information, and error information at one time.

│ <入力,子局交信,運転,ｴﾗｰ情報
< Read input/slave station communication/running/error information読込 > >│
│ X0000 X000F X0008 X0006 │
├─┤ ├───┤／├───┤ ├─┬─┤ ├─┬──────────────────[FROMP H0 K0 R**** K326 ]┤
│ MS-QZ Hardware Unit │ FROM │ Input │
│ READY fault │ command │ information │
READY 01H station
│ │ permission │ │
│ │ │ │
│ │ └────────────────────────────────────[SET Y0016 ]┤
│ │ FROM │
│ │ command │
completed
│ │ │
│ │ X0006 │
│ └─┤／├──────────────────────────────────────[RST Y0016 ]┤
│ FROM command FROM │
│ permission command │
completed

② Transfer of output data (TO)

│ <Write output information > │

│ X0000 X000F X0008 X0007 │
├─┤ ├───┤／├───┤ ├─┬─┤ ├─┬──────────────────[TOP H0 K1700 R**** K128 ]┤
│ MS-QZ Hardware Unit │ TO command │ Output │
│ READY fault READY │ permission │ information │
│ │ │ 01H station │
│ │ │ │
│ │ └────────────────────────────────────[SET Y0017 ]┤
│ │ TO command │
│ │ completed │
│ │ │
│ │ X0007 │
│ └─┤／├──────────────────────────────────────[RST Y0017 ]┤
│ TO command TO command │
│ permission completed │

・Data in the PLC is described by R (file register), but there are no problems in the use of other registers.
・Ensure to enter Unit READY (X08) conditions for program execution, and do it by pulse processing.

[Remarks]－ － － － － － － － － － － － － － － － － － － － － － － － － － － － － － －

・Use a combination of receiving and transfer programs.

・Change the number of data or delete the command for processing and data not to be used.
However, I/O processing (X/Y) for each command completed is required.

－ － － － － － － － － － － － － － － － － － － － － － － － － － － － － － － － －

9-5
9. Programming
MS-QZ UNIT A

(3) Time chart 1

The time chart based on the item of (2) is shown below.
The receiving/transfer cycle is shown below. Input/output control in the PLC is a direct method.
It shows a response time at 50ms of scanning time in the PLC. (Outline of response time)

READY (X08) ON
FROM command
permission (X06)
FROMP FROMP FROMP
FROM command
completed (Y16) t1 t2 t1 t2 t1 t2 t1 t2
TO command
permission (X07)
TOP TOP
TO command
completed (Y17) t1 t2 t1 t2 t1 t2 t1

Receiving/transfer cycle

・t1……1 scanning time of program in the PLC (Max. 50ms)

・t2……1 scanning time of this unit (Max.10ms)
[Calculated value of receiving/transfer cycle]
The following represents a maximum delay time of the receiving/transfer cycle.
・Equation : t1 × 2 = 50ms × 2 = About 100ms
A delay time in the case of t1 ＞ t2 represents a maximum, and t2 is absorbed into t1.

(4) Time chart 2

The time chart based on the item of (2) is shown below.
The receiving/transfer cycle is shown below. However, input/output control in the PLC is a refresh method.
It shows a response time at 50ms of scanning time in the PLC. (Outline of response time)

READY (X08) ON

FROM command
permission (X06) FROMP FROMP FROMP
FROM command
completed (Y16) t1×2 t2 t1×2 t2 t1×2 t2 t1×2 t2

TO command
permission (X07) TOP TOP
TO command
completed (Y17) t1×2 t2 t1×2 t2 t1×2 t2 t1×2

Receiving/transfer cycle

・t1……1 scanning time of program in the PLC (Max. 50ms)

・t2……1 scanning time of this unit (Max.10ms)
[Calculated value of receiving/transfer cycle]
The following represents a maximum delay time of the receiving/transfer cycle.
・Equation: t1 × 4 = 50ms × 4 = About 200ms
A delay time in the case of t1 ＞ t2 represents a maximum, and t2 is absorbed into t1.

9-6
9. Programming
MS-QZ UNIT A

9.3 Exclusive communication 1 (general-purpose: transient input/output)

Transient data is sent from and received by this unit on the request of the PLC.
Confirm "ON" of Unit READY signal X08 in the PLC that represents running permission before the sending and
receiving of the data.
For the interpretation of command data from each slave station, refer to the instruction manual for a salve
station to be used.

Processing ・Receiving (FROM)/transfer (TO) of transient input/output data on the request of the PLC
content [Transfer]
(1) The PLC transfers (TO) command request/output information at arbitrary timing.
(2) This unit monitors the presence or absence of each command request information, and
sends the command output information to the slave station if requested.
(3) The slave station receives command output information and processes the data based
on the specifications of the slave station.
[Receiving]
(1) The slave station sends command response (setting and running history) information
as a response to the receiving of the command output information.
(2) This unit stores received data in command response (setting and running history)
information designated regardless of the change of the received data.
If the slave station's response to the request of the PLC is completed, it makes
exclusive communication completed (X02) ON.
(3) The PLC confirms exclusive communication completed (X02), and receives command response
(setting and running history) information.
Processing ・After confirming "ON" of Unit READY (X08) in the PLC that represents running permission
timing ・Arbitrary timing from the PLC

(1) Data image

The PLC transfers transient data (command request/output data) to this unit under TO command at arbitrary
timing.
The PLC receives transient data from this unit under FROM command at ON of exclusive communication completed
(X02).

PLC TO This unit Request Slave station

Transient data Command request Sent data Transient data
Command result
(Output=Request) information (Default=00h) information
(Request→Response)
Command output
information Command response
information
Transient data Received data
Response
(Input=Response) FROM (Default=00h)

(2) Request and response

① Restriction of request
Requests are restricted based on the section 5.4.17 "Parameter setting".
The following requests are not requested (sent) by this unit. "1=No response" is set in the command
result information.
・Request by the relevant station of parameter information "0000h"
・Request of command output information "0000h"

② Confirmation of response
Execute data analysis after confirming the presence or absence of a response from the relevant station.
Unless the presence or absence of the response is confirmed, old data (undefined data) may be mistakenly
processed.
The confirmation of the following devices enables the determination of "request", "request status"
and "response status".
・Request : Command request information ("1=Request found")
・Request status: Attribute information b11 ("0=Request completed" and "1=Sending error"†)
†In the case of sending error, a timeout time (10s) for response wait does not
occur due to the absence of the response.
・Response status: Command result information ("0=Normal response completed) and "1=No response
(timeout time (10s)†)

9-7
9. Programming
MS-QZ UNIT A
† In the case of no response, request it again after confirming "request
restriction", "request" and "request status".

[Remarks]－ － － － － － － － － － － － － － － － － － － － － － － － － － － － － － －

・A slave station that responds to the request is restricted to a CDL-Z slave station. CDL-V slave stations
are not supported.

・Basically confirm the result of the execution, using the relevant bit of the command result information.

－ － － － － － － － － － － － － － － － － － － － － － － － － － － － － － － － －

9-8
9. Programming
MS-QZ UNIT A

(3) Example of program

†This unit is placed on the I/O slot No.0 in the PLC, and the top XY is 00
"Setting information" and "running history information" from EMC-Z, EMC-A, and EMC-B are stored in
exclusive areas, respectively. Consequently, add areas as follows, if required.
│ < Write command request and output information > │
│ X0000 X000F X0008 M**** X0002 Y0012 │
├─┤ ├───┤／├───┤ ├─┬─┤ ├───┤／├───┤／├─┬──────[TOP H0 K1828 R**** K132 ]┤
│ MS-QZ Hardware Unit │ Exclusive Exclusive Exclusive │ Command request │
│ READY fault READY │ communication communication communication │ information-10H │
│ │ request completed request │ station │
│ │ │ │
│ │ │ │
│ │ └────────────────────────[SET Y0012 ]┤
│ │ Exclusive │
│ │ communication │
│ │ request │
│ │ <Read command result and response information > │
│ │ X0002 Y0012 │
│ └─┤ ├───┤ ├─┬────────────[FROMP H0 K1550 R**** K132 ]┤
│ Exclusive Exclusive
│ Command result │
│ communication communication │ information-10H station │
│ completed request │ │
│ │ < Read EMC setting information (another area) > │
│ │ │
│ ├────────────[FROMP H0 K330 R**** K512 ]┤
│ │ 設定情報
Setting information │
│ │ 01H局
01H station │
│ │ │
│ │ < Read EMC running history information (another area) > │
│ │ │
│ ├────────────[FROMP H0 K842 R**** K512 ]┤
│ │ Running history │
│ │ information 01H │
│ │ station │
│ │ │
│ │ │
│ ├──────────────────────────────[RST Y0012 ]┤
│ │ Exclusive │
│ │ communication │
│ │ request │
│ │ │
│ │ │
│ └──────────────────────────────[RST M**** ]┤
│ Exclusive │
│ communication │
request

・Data in the PLC is described by R (file register), but there are no problems in the use of other registers.
・Perform the request when exclusive communication completed (X02) is OFF.
・Ensure to enter Unit READY (X08) conditions for program execution, and do it by pulse processing.

(4) Time chart

The time chart based on the item of (3) is shown below.

READY(X08) ON
FROMP
Exclusive communication
request (Y12)
TOP
Exclusive communication
completed
t1 t2=Response wait time=10s max
(X02)

・t1……Time for request (sending) to slave station

・t2……Time for response (receiving) from slave station
[Request time]
This unit promptly sends a request at the execution of the request. In the case of the request to several
slave stations (several requests), the unit sends it to them every a given cycle.
・Equation : Request time = 100ms × n(the number of requested stations)→(For prevention of traffic
jam)
In the case of n = 64 stations (max), 100ms × 64 = About 6400ms

[Response time]
This unit starts a response check after the completion of a request.
Usually, the response is returned to the relevant stations (during a given cycle). Consequently, a
response wait does not occur.
However, the response may be delayed, depending on traffic jams or the specifications of the slave
station.
Unless all responses to the request are collected within 10s after the start of the response check,
the request will be forcedly terminated due to the timeout.

9-9
9. Programming
MS-QZ UNIT A
9.4 Exclusive communication 2 (general-purpose: transient output)
Transient data (simultaneous transmission (command code "86h") is sent from and received by this unit on the
request of the PLC.
Confirm "ON" of Unit READY signal X08 in the PLC that represents running permission before executing the receiving
and sending of the data.

Processing ・Transfer simultaneous transmission (TO) on the request of the PLC

content [Transfer]
(1) The PLC transfers simultaneous transmission information (TO) at arbitrary timing.
(2) This unit sends simultaneous transmission at ON of simultaneous transmission sending
request (Y13).
(3) The slave station receives simultaneous transmission and processes the transmission
based on its specifications.
Processing ・After confirming "ON" of Unit READY (X08) in the PLC that represents running permission
timing ・Arbitrary timing from the PLC

(1) Data image

The PLC transfers simultaneous transmission to this unit under TO command at arbitrary timing.

The PLC completes the processing at ON of simultaneous transmission completed (X03).

PLC TO This unit Simultaneous Slave station
Transient data Sent data transmission Transient data
(Output= Simultaneous (Default=00h) (No response)
simultaneous transmission
transmission) information
(2) Sending
Execute a request for simultaneous transmission sending after confirming the group number setting of the
slave station.

[Remarks]－ － － － － － － － － － － － － － － － － － － － － － － － － － － － － － －
・A slave station that responds to that responds the request is restricted to a CDL-Z slave station. CDL-V
slave stations are not supported.
－ － － － － － － － － － － － － － － － － － － － － － － － － － － － － － － － －

(3) Example of program

†This unit is placed on the I/O slot No.0 in the PLC, and the top XY is 00
│ <Write simultaneous transmission information > │
│ X0000 X000F X0008 M**** X0003 Y0013 │
├─┤ ├───┤／├───┤ ├─┬─┤ ├───┤／├───┤／├─┬──────[TOP H0 K1960 R**** K1 ]┤
│ MS-QZ Hardware Unit │ Simultaneous Simultaneous Simultaneous │ Simultaneous │
│ READY fault READY │ transmission transmission transmission │ transmission │
completed sending
│ │ request │ information │
request
│ │ │ │
│ │ └────────────────────────[SET Y0013 ]┤
│ │ Simultaneous │
│ │ transmission │
│ │ sending request │
│ │ X0003 Y0013 │
│ └─┤ ├───┤ ├─┬──────────────────────────────[RST Y0013 ]┤
│ Simultaneous Simultaneous │ Simultaneous │
│ transmission transmission │ transmission │
│ completed sending │ sending request │
│ request │ │
│ └──────────────────────────────[RST M**** ]┤
│ Simultaneous │
│ transmission │
request

・Data in the PLC is described by R (file register), but there are no problems in the use of other registers.
・Perform the request when simultaneous transmission completed (X03) is OFF.
・Ensure to enter Unit READY (X08) conditions for program execution, and do it by pulse processing.

9-10
9. Programming
MS-QZ UNIT A
(4) Time chart
The time chart based on the item of (3) is shown below.

READY(X08) ON

Simultaneous transmission
sending request (Y13)
TOP
Simultaneous transmission
completed (X03)
t1

・t1……Time for sending to slave station 100ms

9-11
9. Programming
MS-QZ UNIT A

9.5 Exclusive communication 3 (general purpose : transient input←Only setting of EMC-Z, EMC-A and EMC-B)
Transient data (setting from EMC (command code "C0h")) is sent from and received by this unit on the request
of the EMC.
Confirm "ON" of Unit READY signal X08 in the PLC that represents running permission before executing the receiving
and sending of the data.

Processing ・Receiving (FROM) of setting on the request of the EMC

content In the case of unprocessed (STOP) by the PLC, the relevant area is overwritten.
[Receiving]
(1) EMC-Z, EMC-A and EMC-B send (report) setting data at the change of its internal setting
data.
(2) This unit stores the data in setting information regardless of the change of received
data. In this case, it recognizes the received data as report, set the relevant station
(setting status information), and provides ON to setting change request (X04) to the
PLC.
(3) The PLC confirms setting change request (X04) and receives (FROM) the setting
information.
Processing ・After confirming "ON" of Unit READY (X08) in the PLC that represents running permission
timing ・Arbitrary timing from the EMC

(1) Data image

The PLC receives setting information from this unit under FROM command at ON of setting change request
(X04).

PLC FROM This unit Report Slave station (EMC)

Transient data Setting status Received data Transient data
(Input=Report) information (Default=00h) (Output=Setting
Setting information change)

(2) Report
Execute data analysis after confirming the presence or absence of a report from the relevant station.
If the presence or absence of the report is not confirmed, old data may be mistakenly processed.

[Remarks]－ － － － － － － － － － － － － － － － － － － － － － － － － － － － － － －

・Slave stations that respond to the request are restricted to EMC-Z, EMC-A and EMC-B.

・Confirm the report at the relevant bit for setting status information, and perform an analysis of the change
content on the program.
－ － － － － － － － － － － － － － － － － － － － － － － － － － － － － － － － －

(3) Example of program

† This unit is placed on the I/O slot No.0 in the PLC, and the top XY is 00

│ <Read setting status information > │

│ X0000 X000F X0008 X0004 │
├─┤ ├───┤／├───┤ ├─┬─┤ ├─┬──────────────────[FROMP H0 K326 R**** K516 ]┤
│ MS-QZ Hardware Unit │ Setting │ Setting status │
│ READY fault READY │ change │ information-10H │
│ │ request │ 局
station │
│ │ │ M**** │
│ │ └─┤ ├────────────────────────────────[SET Y0014 ]┤
│ │ Setting report Setting │
│ │ change change │
│ │ confirmation │
confirmation
│ │ X0004 │
│ └─┤／├─┬────────────────────────────────────[RST Y0014 ]┤
│ Setting │ Setting │
│ change │ change │
│ request │ confirmation │
│ │ │
│ └────────────────────────────────────[RST M**** ]┤
│ Setting │
│ report change │
confirmation

・Data in the PLC is described by R (file register), but there are no problems in the use of other registers.
・The change confirmation is described by pulse cut processing of status signal, but there are no problems
in the use of a pulse signal.
・Ensure to enter Unit READY (X08) conditions for program execution, and do it by pulse processing.

9-12
9. Programming
MS-QZ UNIT A

(4) Time chart 1

The time chart based on the item of (3) is shown below. However, input/output control in the PLC is a
direct method.

READY(X08) ON
Change reception Change reception

Setting change
request (X04) FROMP FROMP

Setting change Change reception

confirmation (Y14) t2 t1 t2 t1 possible

Processing cycle

・t1……1 scanning time of program in the PLC

・t2……1 scanning time of this unit (Max.10ms)

(5) Time chart 2

The time chart based on the item of (3) is shown below. However, input/output control in the PLC is a
refresh method.

READY(X08) ON
Change reception Change reception
Setting change
request (X04) FROMP FROMP
Change reception
Setting change
t2 t1×2 t2 t1×2 possible
confirmation (Y14)
Processing cycle

・t1……1 scanning time of program in the PLC

・t2……1 scanning time of this unit (Max.10ms)

9-13
9. Programming
MS-QZ UNIT A
9.6 Exclusive communication 4 (general-purpose: transient input)
Transient data (except setting from EMC (command code "C0h")) is sent from and received by this unit on the
request of the slave station.
Confirm "ON" of Unit READY signal X08 in the PLC that represents running permission before executing the receiving
and sending of the data.

Processing ・Receiving (FROM) of transient data on the request of the slave station
content In the case of unprocessed (STOP) by the PLC, the relevant area is overwritten.
[Receiving]
(1) The slave station sends (report) transient data at the change of its internal data.
(2) This unit stores the data in command report information regardless of the change of
received data. In this case, it recognizes the received data as report, set the relevant
station (command status information), and provides ON to command setting change request
(X05) to the PLC.
(3) The PLC confirms command change request (X05) and receives (FROM) the command report
information.
Processing ・After confirming "ON" of Unit READY (X08) in the PLC that represents running permission
timing ・Arbitrary timing from the slave station

(1) Data image

The PLC receives transient data from this unit under FROM command at ON of command change request (X05).

PLC FROM This unit Report Slave station

Transient data Command status Received data Transient data
(Input=Report) information (Default=00h) (Output=Change)
Command report
information

(2) Report
Execute data analysis after confirming the presence or absence of a report from the relevant station.
If the presence or absence of the report is not confirmed, old data may be mistakenly processed.

[Remarks]－ － － － － － － － － － － － － － － － － － － － － － － － － － － － － － －

・Slave stations that respond to the request are restricted to EMC-Z, EMC-A and EMC-B.

・Confirm the report at the relevant bit for setting status information, and perform an analysis of the change
content on the program.

－ － － － － － － － － － － － － － － － － － － － － － － － － － － － － － － － －

(3) Example of program

† This unit is placed on the I/O slot No.0 in the PLC, and the top XY is 00

│ <Read command status and report information > │

│ X0000 X000F X0008 X0005 │
├─┤ ├───┤／├───┤ ├─┬─┤ ├─┬──────────────────[FROMP H0 K1418 R1418 K132 ]┤
│ MS-QZ Hardware Unit │ Command │ Command status │
│ READY fault READY │ change │ information-10H │
│ │ request │ 局
station │
│ │ │ M**** │
│ │ └─┤ ├────────────────────────────────[SET Y0015 ]┤
│ │ Command report Command change │
│ │ change │
confirmation confirmation
│ │ │
│ │ X0005 │
│ └─┤／├─┬────────────────────────────────────[RST Y0015 ]┤
│ Command │ │
Command change
│ change │ │
│ request │ confirmation │
│ │ │
│ └────────────────────────────────────[RST M**** ]┤
│ Command report │
│ change │
confirmation

・Data in the PLC is described by R (file register), but there are no problems in the use of other registers.
・The change confirmation is described by pulse cut processing of status signal, but there are no problems
in the use of a pulse signal.
・Ensure to enter Unit READY (X08) conditions for program execution, and do it by pulse processing.

9-14
9. Programming
MS-QZ UNIT A

(4) Time chart 1

The time chart based on the item of (3) is shown below. (When the change confirmation is carried out within one scanning)
However, input/output control in the PLC is a direct method.

READY(X08) ON
Change reception Change reception
Command change
request (X05) FROMP FROMP
Command change Change reception
confirmation (Y15) t2 t1 t2 t1 possible

Processing cycle

・t1……1 scanning time of program in the PLC

・t2……1 scanning time of this unit (Max.10ms)

(5) Time chart 2

The time chart based on the item of (3) is shown below. (When the change confirmation is carried out within one scanning)
However, input/output control in the PLC is a refresh method.

READY(X08) ON
Change reception Change reception
Command change
request (X05) FROMP FROMP

Command change Change reception

confirmation (Y15) t2 t1×2 t2 t1×2 possible

Processing cycle

・t1……1 scanning time of program in the PLC

・t2……1 scanning time of this unit (Max.10ms)

9-15
10. Example of Program Preparation
MS-QZ UNIT A
Chapter 10 Example of Program Preparation
This chapter describes an example of program preparation for the PLC to this unit.

10.1 System configuration

An example of system configuration is described below.
Power supply unit

CPU unit

This unit Preparation of program

Transmission
Transmission bus
power supply
(24VDC)

EMC-A EMC-A EMC-A EMC-A EMC-A EMC-A

#01h #02h #03h #04h #05h #06h

LSZ-44 LSZ-80 LSZ-08 LSZ-AO LSZ-AI LSZ-AI

#07h #08h #09h #0Ah #0Bh #0Ch

10.2 Program flowchart

This section describes a program flowchart based on the system configuration.

START

OFF SM402
Startup of PLC or
STOP→RUN of PLC

Only one scanning ON after RUN

Setting of communication
control

Parameter setting

Normal communication
(input/output)

END

10-1
10. Example of Program Preparation
MS-QZ UNIT A
10.3 Example of program
This section describes an example of program based on the program flowchart.

Setting of communication control

Dummy control to start
SM402 Only one scanning ON at startup and at operation (STOP→RUN) with X06=ON of normal
communication at
RST Y16
SM402=OFF→ON
(Assign priority to X06
RST Y17 input processing)

Execute write polling

SET Y18 to slave station
Execute setting request
RST Y1A polling to EMC-Z, EMC-A,
or EMC-B
Execute running history
RST Y1B
request polling to EMC-Z,
EMC-A, or EMC-B
Parameter setting
X0F SM402
Parameter information
TOP H0 K1961 R1961 K65

SET Y11 Parameter setting

request
X01
Parameter setting
RST Y11
completed

Normal communication (input/output)

X0F X08 X06 Input information +

Slave station
FROMP H0 K0000 R0000 K326
communication information
etc.

SET Y16 FROM command completed

X06

RST Y16

X0F X08 X07

Output information
TOP H0 K1700 R1700 K128

TO command completed
SET Y17
X07

RST Y17

10-2
Appendix 1 Slave Station Input/Output Information
MS-QZ UNIT A

(1) CDL-V slave station

The following CDL-V slave stations are applicable. ("Not used" and '-' indicate undefinition)
The number of effective data bytes in buffer memory depends on parameters. The following table describes
only effective data. (Refer to the sections 5.4.1 and 5.4.13.)
① LS-44 (GSX)
Output information (Master station→Slave station) Input information (Slave station→Master station)

1 00h DATA1 1 Not used DATA1

<<DATA1>> <<DATA1>>
b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0
0 0 0 0 D04 D03 D02 D01 - - - - DI4 DI3 DI2 DI1

② LS-08 (GSX)
Output information (Master station→Slave station) Input information (Slave station→Master station)

1 00h DATA1 1 Not used DATA1

<<DATA1>> <<DATA1>>
b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0
D08 D07 D06 D05 D04 D03 D02 D01 - - - - - - - -

③ LS-80 (GS)
Output information (Master station→Slave station) Input information (Slave station→Master station)

1 00h DATA1 1 Not used DATA1

<<DATA1>> <<DATA1>>
b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0
0 0 0 0 0 0 0 0 DI8 DI7 DI6 DI5 DI4 DI3 DI2 DI1

④ LS-AI (GS)
Output information (Master station→Slave station) Input information (Slave station→Master station)

1 00h DATA1 1 Not used DATA1

<<DATA1>> <<DATA1>>
b7 b6 b5 b4 b3 b2 b1 b0 b7 b0
0 0 0 0 0 0 0 0 Analog quantity: 0 to 255

⑤ LS-AO (GSX)
Output information (Master station→Slave station) Input information (Slave station→Master station)

1 00h DATA1 1 Not used DATA1

<<DATA1>> <<DATA1>>
b7 b0 b7 b6 b5 b4 b3 b2 b1 b0
Analog quantity: 0 to 255 - - - - - - - -

Appendix 1-1
Appendix 1 Slave Station Input/Output Information
MS-QZ UNIT A

⑥ EMC-VB (transmission mode 1)

Output information (Master station→Slave station) Input information (Slave station→Master station)

1 00h DATA1 1 Not used DATA1

<<DATA1>> <<DATA1>>
b7 b6 b5 b4 b3 b2 b1 b0 b7 b3 b2 b1 b0
Reve Norm
Main circuit current value rse al
D07 D06 D05 0 D04 D03 D02 D01 rota
Fault
rota
(0 to 124%)
tion tion

⑦ EMC-VB (transmission mode 2)

Output information (Master station→Slave station) Input information (Slave station→Master station)

1 00h DATA1 1 Not used DATA1

<<DATA1>> "Running" represents normal rotation or reverse

<<DATA1>>
rotation.
b7 b6 b5 b4 b3 b2 b1 b0 b7 b3 b2 b1 b0
Main circuit current value Runn
D07 D06 D05 0 D04 D03 D02 D01 GF Fault
(0 to 124%) ing

(Note) b1 fault excludes GF.

⑧ EMC-VB (transmission mode 3)

Output information (Master station→Slave station) Input information (Slave station→Master station)

1 00h DATA1 1 Not used DATA1

<<DATA1>> <<DATA1>>
b7 b6 b5 b4 b3 b2 b1 b0 b7 b3 b2 b1 b0
Reve Norm
rse al
D07 D06 D05 0 D04 D03 D02 D01 INT PF OCI/UC OC GF
rota
Fault
rota
tion tion

⑨ EMC-VB (transmission mode 4)

Output information (Master station→Slave station) Input information (Slave station→Master station)

1 00h DATA1 1 Not used DATA1

<<DATA1>> <<DATA1>>
b7 b6 b5 b4 b3 b2 b1 b0 b7 b2 b1 b0
Main circuit current value (0 to
D07 D06 D05 0 D04 D03 D02 D01 Fault Running

126%)

・ Set each transmission mode for EMC-VB by 'SW2' in the main body.
・ The combination with transmission option unit enables transmission.
・ The combination with output option unit enables D03 to D07 control.
The signal location for D04 depends on the settings of option units.

Appendix 1-2
Appendix 1 Slave Station Input/Output Information
MS-QZ UNIT A

(2) CDL-Z (V mode) slave station

The following CDL-Z (V mode) slave stations are applicable. However, a slave station with a model number
of S2 has no functional problems. ("Not used" indicates undefinition)
The number of effective data bytes in buffer memory depends on parameters. The following table describes
only effective data. (Refer to the sections 5.4.1 and 5.4.13.)
① LSZ-44 (setting of V mode)
Output information (Master station→Slave station) Input information (Slave station→Master station)

1 00h DATA1 1 Not used DATA1

<<DATA1>> AN* is a set confirmation signal for output

<<DATA1>>
information.
b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0
0 0 0 0 D04 D03 D02 D01 AN4 AN3 AN2 AN1 DI4 DI3 DI2 DI1

② LSZ-08 (setting of V mode)

Output information (Master station→Slave station) Input information (Slave station→Master station)

1 00h DATA1 1 Not used DATA1

<<DATA1>> AN* is a set confirmation signal for output

<<DATA1>>
information.
b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0
D08 D07 D06 D05 D04 D03 D02 D01 AN8 AN7 AN6 AN5 AN4 AN3 AN2 AN1

③ LSZ-80 (setting of V mode)

Output information (Master station→Slave station) Input information (Slave station→Master station)

1 00h DATA1 1 Not used DATA1

<<DATA1>> <<DATA1>>
b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0
0 0 0 0 0 0 0 0 DI8 DI7 DI6 DI5 DI4 DI3 DI2 DI1

④ LSZ-AI (setting of V mode)

Output information (Master station→Slave station) Input information (Slave station→Master station)

1 Not used 1 Not used DATA1

<<DATA1>> <<DATA1>>
b7 b6 b5 b4 b3 b2 b1 b0 b7 b0
- - - - - - - - Analog quantity: 0 to 255

⑤ LSZ-AO (setting of V mode)

Output information (Master station→Slave station) Input information (Slave station→Master station)

1 00h DATA1 1 Not used DATA1

<<DATA1>> AN* is a set confirmation signal for output

<<DATA1>>
information.
b7 b0 b7 b6 b5 b4 b3 b2 b1 b0
Analog quantity of channel 1: 0 to 255 0 0 0 0 AN4 AN3 AN2 AN1

Appendix 1-3
Appendix 1 Slave Station Input/Output Information
MS-QZ UNIT A

(3) CDL-Z (Z mode) slave station

The following CDL-Z (Z mode) slave stations are applicable. However, a slave station with a model number
of S2 has no functional problems. ("Not used" indicates undefinition)
The number of effective data bytes in buffer memory depends on parameters. The following table describes
only effective data. (Refer to the sections 5.4.1 and 5.4.13.)
① LSZ-44 (setting of Z mode)
Output information (Master station→Slave station) Input information (Slave station→Master station)

1 Not used DATA1 1 DATA2 DATA1

<<DATA1>> AN* is a set confirmation signal for output

<<DATA1>>
information.
b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0
- - - - D04 D03 D02 D01 AN4 AN3 AN2 AN1 DI4 DI3 DI2 DI1
<<DATA2>> <<DATA2>> T* is a test signal for test mode.
b15 b14 b13 b12 b11 b10 b9 b8 b15 b14 b13 b12 b11 b10 b9 b8
- - - - - - - - 0 0 0 0 T4 T3 T2 T1

② LSZ-08 (setting of Z mode)

Output information (Master station→Slave station) Input information (Slave station→Master station)

1 Not used DATA1 1 Not used DATA1

<<DATA1>> AN* is a set confirmation signal for output

<<DATA1>>
information.
b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0
D08 D07 D06 D05 D04 D03 D02 D01 AN8 AN7 AN6 AN5 AN4 AN3 AN2 AN1
<<DATA2>> <<DATA2>>
b15 b14 b13 b12 b11 b10 b9 b8 b15 b14 b13 b12 b11 b10 b9 b8
- - - - - - - - - - - - - - - -

③ LSZ-80 (setting of Z mode)

Output information (Master station→Slave station) Input information (Slave station→Master station)

1 Not used 1 DATA2 DATA1

<<DATA1>> <<DATA1>>
b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0
- - - - - - - - DI8 DI7 DI6 DI5 DI4 DI3 DI2 DI1
<<DATA2>> <<DATA2>> T* is a test signal for test mode.
b15 b14 b13 b12 b11 b10 b9 b8 b15 b14 b13 b12 b11 b10 b9 b8
- - - - - - - - T8 T7 T6 T5 T4 T3 T2 T1

④ LSZ-AI (setting of Z mode)

Output information (Master station→Slave station) Input information (Slave station→Master station)

1 Not used 1 DATA2 DATA1

<<DATA1>> <<DATA1>>
b7 b6 b5 b4 b3 b2 b1 b0 b7 b0
- - - - - - - - Analog quantity of channel 1: 0 to 255
<<DATA2>> <<DATA2>>
b15 b14 b13 b12 b11 b10 b9 b8 b15 b8
- - - - - - - - Analog quantity of channel 2: 0 to 255

Appendix 1-4
Appendix 1 Slave Station Input/Output Information
MS-QZ UNIT A

⑤ LSZ-AO (setting of Z mode)

Output information (Master station→Slave station) Input information (Slave station→Master station)

1 DATA2 DATA1 1 Not used DATA1

<<DATA1>> AN* is a set confirmation signal for output

<<DATA1>>
information.
b7 b0 b7 b6 b5 b4 b3 b2 b1 b0
Analog quantity of channel 1: 0 to 255 AN8 AN7 AN6 AN5 AN4 AN3 AN2 AN1
<<DATA2>> <<DATA2>>
b15 b8 b15 b14 b13 b12 b11 b10 b9 b8
Analog quantity of channel 2: 0 to 255 - - - - - - - -

⑥ LSZ-160
Output information (Master station→Slave station) Input information (Slave station→Master station)

1 Not used 1 DATA2 DATA1

<<DATA1>> <<DATA1>>
b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0
- - - - - - - - DI8 DI7 DI6 DI5 DI4 DI3 DI2 DI1
<<DATA2>> <<DATA2>>
b15 b14 b13 b12 b11 b10 b9 b8 b15 b14 b13 b12 b11 b10 b9 b8
- - - - - - - - DI16 DI15 DI14 DI13 DI12 DI11 DI10 DI9

⑦ LSZ-016
Output information (Master station→Slave station) Input information (Slave station→Master station)

1 DATA2 DATA1 1 Not used DATA1

<<DATA1>> † is a flag for indicating the presence of control

<<DATA1>>
power supply (OFF at control reception from master station)
b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0
DO8 DO7 DO6 DO5 DO4 DO3 DO2 DO1 - - - - - - - †
<<DATA2>> <<DATA2>>
b15 b14 b13 b12 b11 b10 b9 b8 b15 b14 b13 b12 b11 b10 b9 b8
DO16 DO15 DO14 DO13 DO12 DO11 DO10 DO9 - - - - - - - -

⑧ LSZ-PI (setting of 16-point input mode)

Output information (Master station→Slave station) Input information (Slave station→Master station)

1 Not used 1 DATA2 DATA1

<<DATA1>> <<DATA1>>
b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0
- - - - - - - - IN8 IN7 IN6 IN5 IN4 IN3 IN2 IN1
<<DATA2>> <<DATA2>>
b15 b14 b13 b12 b11 b10 b9 b8 b15 b14 b13 b12 b11 b10 b9 b8
- - - - - - - - IN16 IN15 IN14 IN13 IN12 IN11 IN10 IN9

Appendix 1-5
Appendix 1 Slave Station Input/Output Information
MS-QZ UNIT A

⑨ LSZ-PI (setting of time measuring mode)

Output information (Master station→Slave station) Input information (Slave station→Master station)

1 Not used 1 DATA2 DATA1

<<DATA1>> <<DATA1>> Measuring signal

b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0
- - - - - - - - IN8 IN7 IN6 IN5 IN4 IN3 IN2 IN1
<<DATA2>> <<DATA2>> Input signal
b15 b14 b13 b12 b11 b10 b9 b8 b15 b14 b13 b12 b11 b10 b9 b8
- - - - - - - - IN16 IN15 IN14 IN13 IN12 IN11 IN10 IN9

⑩ LSZ-PI (setting of pulse count mode)

Output information (Master station→ Slave station) Input information (Slave station→Master station)

1 Not used 1 Not used

<<DATA1>> <<DATA1>> Measuring signal

b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0
- - - - - - - - - - - - - - - -
<<DATA2>> <<DATA2>> Input signal
b15 b14 b13 b12 b11 b10 b9 b8 b15 b14 b13 b12 b11 b10 b9 b8
- - - - - - - - - - - - - - - -

Appendix 1-6
Appendix 1 Slave Station Input/Output Information
MS-QZ UNIT A

(4) EMC (CDL-Z mode of 1 to 3) slave station

The following EMC (transmission mode 1 to 3) slave stations are applicable.
The number of effective data bytes in buffer memory depends on parameters. The following table describes
only effective data. (Refer to the sections 5.4.1 and 5.4.13.)
① EMC (transmission mode 1 to 3)
Output information (Master station→Slave station) Input information (Slave station→Master station)

1 00h DATA1 1 DATA2 DATA1

2 DATA4 DATA3

<<DATA1>> Use X20 to X23 without change. <<DATA1>>

b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0
X27 X26 X25 X24 X23 X22 X21 X20 Y47 Y46 Y45 Y44 Y43 Y42 Y41 Y40
<<DATA2>>
b15 b14 b13 b12 b11 b10 b9 b8
Sub-slave
Fault Y4D Y4C Y4B Y4A Y49 Y48
station
《DATA3》
b7 b0
Main circuit current value (%)
《DATA4》
b15 b8
Leak current value (mA)/Trip current value (%)

Appendix 1-7
Appendix 1 Slave Station Input/Output Information
MS-QZ UNIT A

(5) EMC (CDL-Z mode 4 to 7) slave station

The following EMC (transmission mode 4 to 6) slave stations are applicable. ("Not used" indicates
undefinition)
The number of effective data bytes in buffer memory depends on parameters. The following table describes
only effective data. (Refer to the sections 5.4.1 and 5.4.13.)
① EMC (transmission mode 4)
Output information (Master station→Slave station) Input information (Slave station→Master station)

1 00h DATA1 1 Not used DATA1

<<DATA1>> <<DATA1>>
b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0
X27 X26 X25 X24 X23 X22 X21 X20 Y47 Y46 Y45 Y44 Y43 Y42 Y41 Y40

② EMC (transmission mode 5)

Output information (Master station→Slave station) Input information (Slave station→Master station)

1 00h DATA1 1 Not used DATA1

<<DATA1>> <<DATA1>>
b7 b6 b5 b4 b3 b2 b1 b0 b7 b3 b2 b1 b0
Main circuit current value
X27 X26 X25 X24 X23 X22 X21 X20 Y42 Y41 Y40
(0 to 124%)

③ EMC (transmission mode 6)

Output information (Master station→Slave station) Input information (Slave station→Master station)

1 00h DATA1 1 Not used DATA1

<<DATA1>> <<DATA1>>
b7 b6 b5 b4 b3 b2 b1 b0 b7 b2 b1 b0
Main circuit current value (0 to
X27 X26 X25 X24 X23 X22 X21 X20 Y41 Y40
126%)

④ EMC (transmission mode 7)

Output information (Master station→Slave station) Input information (Slave station→Master station)

1 00h DATA1 1 Not used DATA1

<<DATA1>> <<DATA1>>
b7 b6 b5 b4 b3 b2 b1 b0 b7 b3 b2 b1 b0
Main circuit current value
X27 X26 X25 X24 X23 X22 X21 X20 Y42 Y43 Y40
(0 to 124%)

(6) H-A7CDL slave station

The following H-A7CDL slave station is applicable.
The number of effective data bytes in buffer memory depends on parameters. The following table describes
only effective data. (Refer to the sections 5.4.1 and 5.4.13.)
Output information (Master station→Slave station) Input information (Slave station→Master station)

1 DATA2 DATA1 1 DATA2 DATA1

2 DATA4 DATA3

Appendix 1-8
Appendix 2 Operation of This Unit by PLC Mainpulation
MS-QZ UNIT A
(1) "Power activation" by the operation of PLC
This unit restarts at power activation (including short interruption). Consequently, the operation of
the PLC is disabled for about 15s.
(Point) A time required from a restart to the operable state is about 15s.
During the time, the PLC becomes "control disabled". Be careful to power supply at the
application.
This unit is restarted to execute the setting of slave station output at startup
The setting of SW2 (including system configuration) enables the output of slave station to become all
open (OFF) at the startup of this unit.
(Point) It makes the output all-open immediately before the operable state after a restart. However,
the output is retained otherwise when it is latched in the slave station (loaded side).
When it is controlled only with the output of the slave station (without latching mechanism),
and the load cannot be stopped at the startup, select "retention" by the setting of SW2.

(2) "STOP" by the operation of PLC

The control becomes disabled at the operation for "STOP".
(Point) All controls via the PLC become "control disabled".
However, input data from the slave station during the time is updated in the interior of this
unit.
With 10s continuation of "STOP" operation, this unit executes the setting of slave station output at link
stop.
The setting of SW2 (including system configuration) enables the output of slave station to become all
open (OFF) at the startup of this unit.
(Point) It makes the output all-open after a lapse of 10s for STOP operation. However, the output is
retained otherwise when it is latched in the slave station (loaded side).
When it is controlled only with the output of the slave station (without latching mechanism),
and the load cannot be stopped during STOP operation, select "retention" by the setting of SW2.

Appendix 2-1
Appendix 3 Product Information
MS-QZ UNIT A

† Product sub-code notes

Product Notes
sub-code
A (Not shipped.)
B LSZ-MRU and H-A7CDL cannot be set to slave stations.
If they are connected to this unit, it will not function properly.
C～ LSZ-MRU and H-A7CDL can be set to slave stations.

Appendix 3-1