9.3.

PROGRAMMABLE LOGIC CONTROLLER PLC

9.3.1 Programmable logic controller

PLC
This section applies to the RH 120 E
from serial no. 120 056
9.3.1.1

Introduction

This programmable logic controller (PLC) is capable of

- doing logical operations (AND, OR, ),
- saving/memorizing,
- forming lines,
- counting.
Specific modules for functions such as
- shift registers (16 bit),
- memories with dynamic inputs,
- "goto" instructions,
- comparators,

Basic functions of PLC:

Controls function:
-

Start+Stop engines
Idle Timer
Lamp test + cabinet fan
Lubrication
Lights (Ladder, cabine, maintenance)
Ultrasonic sound sensor

Monitoring:
-

Servo filter
Hydraulic tank lock-up valves
Lubrication initiators
lubrication pressure
Grease container filling level
Fuel gauges

are programmable.
You can program the this PLC from a personal computer (PC).
Thus, the following functions will be possible:
- setting outputs,
- checking input and output statuses,
- altering the programmed times and counts during
processing,
- diagnosis.

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9.3.1

9.3.1.2

PROGRAMMABLE LOGIC CONTROLLER PLC

Specifications

CAN/M4 basic unit

Supply voltage:
Power consumption:
CPU/RAM:
Cycle time:
Number of digital inputs:

Number of analog inputs:

Number of digital outputs:

Number of analog outputs:

24 V - (18 V 32 VDC)
approx. 5 8 W
512 kB RAM, 1 MB flash
typically 1.2 ms/kbyte command
32
(inputs for control functions not potential-isolated)
(green input status LED indicators)
(current consumption 7 mA per input)
8
(6 of them configured for 4 20 mA signal)
(2 of them configured for 0 10 VDC signal)
20
(transistor outputs)
(red output status LED indicators)
(max. load capacity 200 mA)
4
(output voltage 0 10 VDC, max. output current 10 mA)

Basic unit overview

Fig. 1

Page 9.3.1 - 2

640020

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PROGRAMMABLE LOGIC CONTROLLER PLC

Terminal plan

Fig. 2

640020

Description of the terminals:

Top terminal strip
Terminal nos. 1-32
Terminal nos. 33-36
Terminal nos. 37-38

Digital inputs
Analog outputs
Digital outputs

Bottom terminal strip

Terminal nos. 39-56
Terminal nos. 57-72
Terminal nos. 73-74
Terminal nos. 75-76

Digital outputs
Analog inputs (2 x 0 10 VDC, 6 x 4 20 mA)
Power supply +24 VDC potential
Power supply GND potential

Front
RS232 port
CAN IN port
CAN OUT port
ON LED
BUS LED

RS232 input for programming this unit (for programming)

CAN IN input for integrating the PLC into the CAN bus system
CAN OUT output, for example, to connect a PC (for diagnosis)
LED to indicate whether the supply voltage is applied.
LED to indicate BUS communication.

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9.3.1

9.3.1.3

PROGRAMMABLE LOGIC CONTROLLER PLC

Maintenance

Installation

Install this control system into a cabinet where it is

protected from water. Ensure sufficient ventilation.

Removal

Changing the program

You can change the program of the PLC using a PC

with specific 'download software' and a download
cable, part no. 3685323 (serial 9-pin male 9-pin
female, 1:1).
Prior to changing the software, please consult the
Terex|O&KService Department to make sure that
the correct program version will be used.

To replace the basic unit proceed as follows:

1.

Set the key-operated switch on the control

panel in the operator's cab to "0" to cut off the
power supply of the control unit.

Software installation from a notebook

It can be possible that the control

unit is still energized via the timing
circuits of the "IDLE timer" or "ladder
light" functions, respectively.
Therefore, do not remove a control
unit before the ON LED is off, or
switch off the circuit breaker (F18).

2.

Renew any missing cable identifiers. Disconnect all wiring from the control unit.

3.

Remove the mounting screws from the sides

of the PLC and take out the control unit.

4.

If you wish to alter the control program please

refer to the "Changing the program" section.
To install the a new control unit proceed in the
reverse order.
Fig. 3

640021

When reconnecting the power supply, ensure correct polarity (24 VDC),
or the control unit will be destroyed.

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PROGRAMMABLE LOGIC CONTROLLER PLC

Digital input ports

Input

Terminal

Description

Input 1

Input 2

Input 3

Servo filter

Input 4

Reset for truck counter

Input 5

Ignition

Input 6

Emergency stop

K24

Input 7

LH engine start

S5

Input 8

RH engine start

S6

Input 9

Stop LH engine

S90

10

Input 10

Stop RH engine

S92

11

Input 11

LH engine idle

S91

12

Input 12

RH engine idle

S93

13

Input 13

Hydraulic tank lock-up valve 1

S212

14

Input 14

Hydraulic tank lock-up valve 2

S212.1

15

Input 15

Hydraulic tank lock-up valve 3

S212.2

16

Input 16

Lubrication reset

S106

17

Input 17

LH PTG oil level

Not used

18

Input 18

RH PTG oil level

Not used

19

Input 19

Lubrication initiator 2

B336.1

20

Input 20

Lubrication initiator 1

B336

21

Input 21

Ladder light

S55

22

Input 22

Cabin light

S35.1

23

Input 23

Lube pump hydraulic oil filter

S257

24

Input 24

Maintenance light

25

Input 25

Not used

26

Input 26

Not used

27

Input 27

Not used

28

Input 28

Not used

29

Input 29

Not used

30

Input 30

Not used

31

Input 31

Not used

32

Input 32

Not used

Travel 2nd stage auto

Signal source
(refer to circuit diagram)
Not used
Not used

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S250 & S250.1

S216.2
Ignition voltage 15

S41; S41.1; S42; S43

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PROGRAMMABLE LOGIC CONTROLLER PLC

Analog output ports

Output

Output code

Description

Function enabled

33

Analog output 1

Not used

34

Analog output 2

Not used

35

Analog output 3

Not used

36

Analog output 4

Not used

Digital output ports

Output

Terminal

Description

37

Output 37

Ultrasonic sound sensor

38

Output 38

Terminal 30 (PLC self-holding)

39

Output 39

LH engine start

K2.3

40

Output 40

RH engine start

K3.3

41

Output 41

LH engine electronics

K7.1

42

Output 42

RH engine electronics

K7.2

43

Output 43

LH engine idle

K206

44

Output 44

RH engine idle

K207

45

Output 45

Lamp test

K36

46

Output 46

Cabinet fan

K28.1

47

Output 47

Lubrication ON

K200

48

Output 48

Lubrication bypass

K201

49

Output 49

Lubrication reversing valve

K202

50

Output 50

Speed reduction

51

Output 51

Undercarriage lubrication

K204

52

Output 52

Lock-up valves open

K158

53

Output 53

Grease container full

K205

54

Output 54

Ladder light

K22.1

55

Output 55

Cabin light

K199

56

Output 56

Maintenance light

K25.1

Page 9.3.1 - 6

Function enabled
(refer to circuit diagram)
H137.2; H137.3
Battery voltage 30

Not used

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PROGRAMMABLE LOGIC CONTROLLER PLC

Analog input ports

Input

Terminal

Description

Signal source
(refer to circuit diagram)

57

Analog input 57 1+ LH fuel gauge

B133

58

Analog input 58 1-

59

Analog input 59 2+ RH fuel gauge

60

Analog input 60 2-

61

Analog input 61 3+ Superstructure lubrication pressure

62

Analog input 62 3-

63

Analog input 63 4+ Undercarriage lubrication pressure

64

Analog input 64 4-

65

Analog input 65 5+ Grease container filling level

66

Analog input 66 5-

Not used

67

Analog input 67 6+

Not used

68

Analog input 68 6-

Not used

69

Analog input 69 7+

Not used

70

Analog input 70 7-

Not used

71

Analog input 71 8+

Not used

72

Analog input 72 8-

Not used

Not used
B134
Not used
B36
Not used
B127
Not used
B125

Power supply
73

Load voltage

X1/28

74

Voltage supply

X1/28

75

Ground

X1/8

76

Ground

X1/8

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9.3.1.4

PROGRAMMABLE LOGIC CONTROLLER PLC

Functional description

Greasing system with hydraulic pump

After the start of the diesel engines, the error message will be suppressed for 5 minutes to avoid the
occurrence of any possible faults (longer lubrication period due to cold oil or grease).

Start requirements:
At least one engine was started, the lubricant container is filled, and no error message is activated.
When the start requirement is met the PLC will
automatically start lubrication through line A.
(Outputs 47 and 48 active.)
Lubrication through line A will continue until initiator 1
changes over.
(Input 20 active.)
Now, the lubrication system will keep running for
another 22 seconds before it will change to line B
after a switch-over period of 4 sec. (output 47 will
be inactive during this period).

You can cancel the error message

with the "reset" pushbutton (input
16 active). (The "reset" pushbutton
is located on the control panel.)
If the lubricant container was empty
and has been refilled the error message will be automatically reset.

Now, lubrication through line B will start.

(Outputs 47, 48 and 49 active.)
Lubrication through line B will continue until initiator 2
changes over (input 19 active).
Now, the lubrication system will still keep running
for 22 sec. before it will stop.
(Outputs 47, 48 and 49 inactive.)
Now, the lubrication system will change to the pause
cycle which you can set in the BCS between 5 min.
and 40 min. (depending on the operating conditions).
The pause time will only be counted down if the
equipment is being moved.
Fault:
(Message in the BCS and system shut-off)
If a pressure in excess of 350 bar is built up,
or
after 2 minutes, in each case, if one of the two
initiators (input 19 or 20) does not switch over,
or
if the lubricant container is empty.
Fault:
(Message in the BCS without system shut-off)
If there is a cable break on the lubrication pressure
sensor,
or
in case of a cable break on the grease level sensor.
Error message suppression

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PROGRAMMABLE LOGIC CONTROLLER PLC

Engines start

Requirements:

RH engine start:
The start command (input 8 active) immediately
switches on the starter (output 40 active) and
turns on the engine electronics (output 42 active).

No emergency stop switch has been actuated.

(Input 6 OFF.)

"Ignition ON" key-operated switch S4 is on.

(Input 5 active.)

The starter (output 40 active) will be activated

as long as the start command is active (input 8
active).

The engine was not stopped immediately before, so the starter interlock will be in effect for
a period of 10 sec.

Once the engine is running, this status will be

internally signalled via the CAN bus.

No "ENGINE STOP" command was/will be given

(input 9 or 10 inactive). This command has priority over the start command.
-

No attempt is made to start both engines at the

same time as this is interlocked.
The limit switches on the hydraulic tank lock-up
valves are closed (inputs 13, 14 and 15 active).

This will have an effect on two things:

1. The start command (input 8) will be disabled
(starter interlock). (Output 40) is switched off.
2. The fan for the cabinet in the platform compartment will be started by relay K28.1 (output 46
active).

Starter interlock
LH engine start:
The start command (input 7 active) immediately
switches on the starter (output 39 active) and
turns on the engine electronics (output 41 active).
The starter (output 39 active) will be activated
as long as the start command is active (input 7
active).
Once the engine is running, this status will be
internally signalled via the CAN bus.

This will have an effect on two things:

1. The start command (input 7) will be disabled
(starter interlock). (Output 39) is switched off.
2. The fan for the cabinet in the platform compartment will be started by relay K28.1 (output
46 active).

RH 120 E Diesel - 3668515en.doc - (01) - 01.06

Each engine has a starter interlock.

The starter interlock prevents the starting of the
starters when the engines are already running, or
are running out. This would cause damage to the
pinions and starters. When the starter interlocks
are active, the start commands are disabled.
The starter interlocks will come into in effect when:
1. the engine is running, which will be internally
signalled via the CAN bus.
2. the engine was just stopped and is still running
out. In such case, the start command will be
disabled for 10 sec.
3. the engine has stalled without any stop command. In such case, the start command will be
disabled for 10 sec.

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PROGRAMMABLE LOGIC CONTROLLER PLC

Engine stop by idle run timer

Explanation:
Both engines can be separately set to the idle
mode. This means that the diesel engine will still
keep running idle for a period of 5 min. after the
engine idle stop command was given.

Idle running can be started by operating S91 or

S93 at (input 11 active) or (input 12 active), respectively.
However, this will only be possible if the DSL (load
pressure switch) is not active (the load pressure
switch does no longer exist as a component but
will only be generated within the program).
The DSL will be inactive whenever no control commands are raised from the cabin through the manual levers and pedals.
To cancel the idle running mode you must either
actuate the control levers for at least 2 sec. or
press the engine stop pushbutton (input 9 active)
or (input 10 active), respectively.

If one of the lock-up valves on the

hydraulic tank (input 13 or input 14
or input 15) is closed while the
engines are running, the respective
engine will be stopped, restarting
being disabled.
Never close the lock-up valves
while the engine is running as
damage may be caused by the
idling down of the engine during
the stopping process.
When the fuel valves are locked at
their open positions, never close a
lock-up valve. In this case, the engines cannot be stopped by the electrical de-energising of the fuel valves.

The outputs (output 43 active) or (output 44 active), respectively, will signal readiness for the idle
running mode.
If the idle running time elapses without any interruption the relays for the engine electronics will be
de-energized via the outputs (output 41) or (output
42), respectively, and the motor will stop.
Even though the control voltage in key-operated
switch circuit # 15 ("ignition voltage") is turned off
after idle operation had already been initiated (output 43 active) or (output 44 active), respectively,
the control system will still be supplied through #
30 (battery voltage) for 5 min. (idle running time).
After this period, the control system will switch off
automatically. If one of the two emergency stop
pushbuttons (input 6 active) is actuated both diesel engines will be stopped immediately, no matter
whether "idle" has already been activated or not.

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9.3.1

9.3.1.5

PROGRAMMABLE LOGIC CONTROLLER PLC

LED indicators on the PLC

Fig. 4 shows the LED arrangement on the PLC.

Fig. 4

640022

As soon as the key-operated ignition switch is turned on in the operator's cabin, the green "ON" LED indicates that the control unit is supplied with 24 V. At the same time, the PLC undergoes an initialization run.
During this time, the "BUS" LED will be blinking several times. After successful initialization of the PLC, the
"ON" and the "BUS" LEDs will be lit.
Input and output status colour codes
The LED at the digital input/output is OFF.
The LED at the digital input is ON.
The LED at the digital output is ON.
Note: The statuses of the analog inputs and outputs as well as the power supply status are NOT indicated by LEDs.
On the following pages, the typical switching states of the PLC's inputs and outputs are listed in dependence
of the operating status of the excavator.
Figs. 5 to 12 show the LED codes for the PLC's inputs and outputs.

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9.3.1

PROGRAMMABLE LOGIC CONTROLLER PLC

9.3.1.6

LED codes for different scenarios

The supply voltage is on (the key-operated switch is ON).

Fig. 5

640023

Active input signals

Input 5
Input 13
Input 14
Input 15

Power supply (+15) has been turned on by key-operated switch.

Left lock-up valve on hydraulic tank OPEN.
Right lock-up valve on hydraulic tank OPEN.
Middle lock-up valve on hydraulic tank OPEN.

Active output signals

Output 38
Output 45

Page 9.3.1 - 12

PLC self-holding state.

Lamp test (ON for 5 seconds).

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9.3.1

PROGRAMMABLE LOGIC CONTROLLER PLC

Only LH drive engine being started

Fig. 6

640024

Constant LED indicators

Input 5
Input 13
Input 14
Input 15
Output 41
Output 38
Output 46

Power supply (+15) has been turned on by key-operated switch.

Left lock-up valve on hydraulic tank OPEN.
Right lock-up valve on hydraulic tank OPEN.
Middle lock-up valve on hydraulic tank OPEN.
LH engine electronics ON.
PLC self-holding state.
Cabinet fan.

Changing LED indicators

Input 7
Output 39
Input 19
Input 20
Output 47
Output 48
Output 49

LH engine ON start pushbutton.

LH engine ON starter relay as long as S5 (input 7) is engaged.
Lubrication initiator 2 (either input 19 or input 20, depending on lubrication system state).
Lubrication initiator 1.
Lubrication ON.
Lubrication bypass valve.
Lubrication reversing valve (only for line B lubrication).

Important: Input 6 (emergency stop) must be off to start the engines!

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PROGRAMMABLE LOGIC CONTROLLER PLC

Only RH drive engine being started

Fig. 7

640025

Constant LED indicators

Input 5
Input 13
Input 14
Input 15
Output 42
Output 38
Output 46

Power supply (+15) has been turned on by key-operated switch.

Left lock-up valve on hydraulic tank OPEN.
Right lock-up valve on hydraulic tank OPEN.
Middle lock-up valve on hydraulic tank OPEN.
RH engine electronics ON.
PLC self-holding state.
Cabinet fan.

Changing LED indicators

Input 8
Output 40
Input 19
Input 20
Output 47
Output 48
Output 49

RH engine ON start pushbutton.

RH engine ON starter relay as long as S6 (input 8) is engaged.
Lubrication initiator 2 (either input 19 or input 20, depending on lubrication system state).
Lubrication initiator 1.
Lubrication ON.
Lubrication bypass valve.
Lubrication reversing valve (only for line B lubrication).

Important: Input 6 (emergency stop) must be off to start the engines!

Page 9.3.1 - 14

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9.3.1

PROGRAMMABLE LOGIC CONTROLLER PLC

LH engine being stopped

Fig. 8

640026

Constant LED indicators

Input 5
Input 13
Input 14
Input 15
Output 38

Power supply (+15) has been turned on by key-operated switch.

Left lock-up valve on hydraulic tank OPEN.
Right lock-up valve on hydraulic tank OPEN.
Middle lock-up valve on hydraulic tank OPEN.
PLC self-holding state.

Changing LED indicators

Input 9
Input 19
Input 20

LH engine OFF stop pushbutton.

Lubrication initiator 2 (either input 19 or input 20, depending on lubrication system state).
Lubrication initiator 1.

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9.3.1

PROGRAMMABLE LOGIC CONTROLLER PLC

RH engine being stopped

Fig. 9

640027

Constant LED indicators

Input 5
Input 13
Input 14
Input 15
Output 38

Power supply (+15) has been turned on by key-operated switch.

Left lock-up valve on hydraulic tank OPEN.
Right lock-up valve on hydraulic tank OPEN.
Middle lock-up valve on hydraulic tank OPEN.
PLC self-holding state.

Changing LED indicators

Input 10
Input 19
Input 20

Page 9.3.1 - 16

RH engine OFF stop pushbutton.

Lubrication initiator 2 (either input 19 or input 20, depending on lubrication system state).
Lubrication initiator 1.

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9.3.1

PROGRAMMABLE LOGIC CONTROLLER PLC

Centralized lubrication system lubricating through line A

(Requirement: Both engines must be running.)

Fig. 10

640028

Constant LED indicators

Input 5
Input 13
Input 14
Input 15
Output 41
Output 42
Output 38
Output 46

Power supply (+15) has been turned on by key-operated switch.

Left lock-up valve on hydraulic tank OPEN.
Right lock-up valve on hydraulic tank OPEN.
Middle lock-up valve on hydraulic tank OPEN.
LH engine electronics ON.
RH engine electronics ON.
PLC self-holding state.
Cabinet fan.

Changing LED indicators

Input 19
Input 20
Output 47
Output 48

Lubrication initiator 2 (switching off when lubrication is being executed through line A).
Lubrication initiator 1 (switching on when lubrication is being executed through line A, and
lubrication pump still running for 22 sec.).
Lubrication ON.
Lubrication bypass valve.

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9.3.1

PROGRAMMABLE LOGIC CONTROLLER PLC

Centralized lubrication system lubricating through line B

(Requirement: Both engines must be running.)

Fig. 11

640029

Constant LED indicators

Input 5
Input 13
Input 14
Input 15
Output 41
Output 42
Output 38
Output 46

Power supply (+15) has been turned on by key-operated switch.

Left lock-up valve on hydraulic tank OPEN.
Right lock-up valve on hydraulic tank OPEN.
Middle lock-up valve on hydraulic tank OPEN.
LH engine electronics ON.
RH engine electronics ON.
PLC self-holding state.
Cabinet fan.

Changing LED indicators

Input 20
Input 19
Output 47
Output 48
Output 49

Page 9.3.1 - 18

Lubrication initiator 1 (switching off when lubrication is being executed through line B).
Lubrication initiator 2 (switching on when lubrication is being executed through line B, and
lubrication pump still running for 22 sec.).
Lubrication ON.
Lubrication bypass valve.
Lubrication reversing valve.

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9.3.1

PROGRAMMABLE LOGIC CONTROLLER PLC

Lights: (Maintenance light, cabin light, ladder light)

(Requirement: Both engines are OFF.)

Fig. 12

640030

Constant LED indicators

Input 5
Input 13
Input 14
Input 15
Output 38
Output 56
Output 55
Output 54

Power supply (+15) has been turned on by key-operated switch.

Left lock-up valve on hydraulic tank OPEN.
Right lock-up valve on hydraulic tank OPEN.
Middle lock-up valve on hydraulic tank OPEN.
PLC self-holding state.
Maintenance light (set (light ON) and reset (light OFF) by input 24).
Cabin light (set (light ON) and reset (light OFF) by input 22).
Ladder light (set (light ON) by input 21 and automatically reset (light OFF) after 3 min.).

Changing LED indicators

Input 24
Input 22
Input 21

ON as long as one of the maintenance light pushbuttons is being pressed.

ON as long as one of the cabin light pushbuttons is being pressed.
ON as long as one of the ladder light pushbuttons is being pressed.

Important: You can also activate the maintenance and cabin lights when the ignition voltage is off. For this
purpose, just keep one of the light pushbuttons pressed for at least 3 seconds. The PLC will then change
into its self-holding state. To switch off the light press the same pushbutton again. The ladder light can also
be activated for 3 seconds if you press one of the ladder light pushbuttons. The self-holding state of the PLC
will be automatically reset after the 3 minutes have elapsed.

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Page 9.3.1 - 19

9.3.1

9.3.1.7

PROGRAMMABLE LOGIC CONTROLLER PLC

Configuring the PLC and fault diagnosis by means of the PLC

There are two options to configure the PLC. The PLC can bee used for troubleshooting by sending status
requests.
Troubleshooting:
The BCS screen can be used for troubleshooting.
To enable status requests first call up the PLC menu from the BCS.

1. Press the "SERV" key (red arrow).

2. Select item 9, "Service Terex" (blue arrow).
3. Enter your PIN.

Fig. 13

Page 9.3.1 - 20

640039en

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9.3.1

PROGRAMMABLE LOGIC CONTROLLER PLC

4. From the newly appearing "Service Terex" submenu, select item 10, "PLC" (red arrow).

Fig. 14

RH 120 E Diesel - 3668515en.doc - (01) - 01.06

640040en

Page 9.3.1 - 21

9.3.1

PROGRAMMABLE LOGIC CONTROLLER PLC

5. Now, the status screen of the PLC will appear. To facilitate quick fault diagnosis you can read PLC error
and status messages on this screen.
In addition, if the lubrication system is in the pause cycle, you can read the remaining pause time.

Fig. 15

Page 9.3.1 - 22

640041en

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PROGRAMMABLE LOGIC CONTROLLER PLC

6. Actuate the "DOWN" button to open the "PLC I/O Digital" screen. This screen displays the digital inputs
and outputs of the PLC module together with their associated functions. The example depicts the activity
of the lamp test output (red arrow).

Fig. 16

RH 120 E Diesel - 3668515en.doc - (01) - 01.06

640042en

Page 9.3.1 - 23

9.3.1

PROGRAMMABLE LOGIC CONTROLLER PLC

7. Press the "DOWN" button again to open the "PLC I/O Analog" screen. This screen shows the analog
inputs and outputs of the PLC module. The example indicates analog input 57 (red arrow) which represents the voltage value of the left-hand diesel fuel tank filling level sensor.

Fig. 17

640043en

8. List of analog inputs:

Analog input 57: LH diesel fuel tank level sensor, 1.0 V = 0 % filling level, 10.0 V = 100 % filling level.
(Thus, a voltage below 1.0 V indicates a fault/cable break.)
Analog input 59: RH diesel fuel tank level sensor, 1.0 V = 0 % filling level, 10.0 V = 100 % filling level.
(Thus, a voltage below 1.0 V indicates a fault/cable break.)
Analog input 61: Superstructure lubrication pressure, 4.0 mA = 0 bar, 20 mA = 600 bar.
(Thus, a current below 4.0 mA indicates a fault/cable break.)
Analog input 63: Undercarriage lubrication pressure, 4.0 mA = 0 bar, 20 mA = 600 bar.
(Thus, a current below 4.0 mA indicates a fault/cable break.)
Analog input 65:

Page 9.3.1 - 24

Grease container level sensor, 4.0 mA = 0 % filling level, 20 mA = 100 % filling level.
(Thus, a current below 4.0 mA indicates a fault/cable break.)

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PROGRAMMABLE LOGIC CONTROLLER PLC

Option 1:
To configure the PLC open the "PLC Configuration" window at level 2.
1. Select item 11, "Configure Device" (red arrow) on the "SERVICE Terex" screen.
2. Enter your PIN.

Fig. 18

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3. Select item 8, "PLC Configuration".

Fig. 19

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640045en

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PROGRAMMABLE LOGIC CONTROLLER PLC

This will open the configuration window where you can make the following settings:
Grease container level sensor
Lubrication undercarriage
Lubrication cycle time
Type of excavator
Type of engine

Yes/No
Yes/No
300 2400 s
RH 90/120/170/200/340
Cummins/Caterpillar

These settings are only made once at the factory and do not have to be changed later.
For testing and service purposes, it may, however, become necessary to use different configuration values.

Fig. 20

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Option 2:
A second way how to configure the PLC or to perform fault diagnosis is offered by the optionally available
Electrical Diagnostic System (EDS).
In addition to a PC, the following will be required:
1.
2.
3.

EDS software (for Windows)

USB PC-CAN dongle
RS232 serial cable, 1:1

Fig. 21

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S/N: 2768865
S/N: 2482239
S/N: 3685323

640047

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PROGRAMMABLE LOGIC CONTROLLER PLC

With help of the EDS, you can, in addition to the PLC data, read out of the CAN bus system other data of the
remaining electronic circuitry. Among other items, the program includes a BCS reader. This bilingual program can be switched from German to English or vice versa. The example below shows a shot of the PLC
DATA screen in the EDS.

Fig. 22

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Page 9.3.1 - 30

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