Easy! Smooth!

GP/ST3000 Series->GP4000M Series

Replacement Guidebook

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Fourth Edition Jul. 2012

Copyright © 2012.7 Digital Electronics Corporation. All Rights Reserved.

 Preface

This guidebook introduces the procedures to replace a unit in GP/ST3000 series with a
GP-4301TM unit.

Model in use Model No. Recommended Substitution

GP-3301S AGP3301-S1-D24
GP-3301L AGP3301-L1-D24
GP-3302B AGP3302-B1-D24 GP-4301TM
ST-3301S AST3301-S1-D24
ST-3301B AST3301-B1-D24

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 Contents

PREFACE 2

CONTENTS 3

CHAPTER 1 SPECIFICATION COMPARISON 5

1.1 SPECIFICATIONS OF GP-3301S/L AND GP-4301TM 5

1.2 SPECIFICATIONS OF GP-3302B AND GP-4301TM 7
1.3 SPECIFICATIONS OF ST-3301S/B AND GP-4301TM 9

CHAPTER 2 COMPATIBILITY OF HARDWARE 11

2.1 LOCATIONS OF CONNECTORS 11

2.2 DISPLAY COLORS (FOR GP-3301L/3302B AND ST-3301B ONLY) 13
2.3 PANEL CUTOUT DIMENSIONS 13
2.4 EXTERNAL DIMENSIONS 14
2.5 TRANSFER CABLE 14
2.6 INTERFACE 15
2.6.1 SERIAL INTERFACE 15
2.6.2 CF CARD INTERFACE (FOR GP-3301S/L ONLY) 15
2.7 PERIPHERAL UNITS AND OPTION UNITS 16
2.7.1 BARCODE READER CONNECTOIN 16
2.7.2 PRINTER CONNECTION 16
2.7.3 EXPANSION UNIT 16
2.7.4 ISOLATION UNIT 16
2.8 POWER CONSUMPTION 16
2.9 MATERIALS/COLORS OF THE BODY 17
2.10 BACKUP MEMORY (SRAM) 17

CHAPTER 3 REPLACEMENT PROCEDURE 18

3.1 WORK FLOW 18

3.2 PREPARATION 19

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3.3 RECEIVE SCREEN DATA FROM GP/ST3000 SERIES 20
3.4 CHANGE THE DISPLAY UNIT TYPE 23
3.5 TRANSFER SCREEN DATA TO GP-4301TM 24
3.6 DIFFERENCES OF SOFTWARE 28

CHAPTER 4 COMMUNICATION WITH DEVICE/PLC 29

4.1 DRIVERS 29
4.2 SHAPES OF COM PORTS 29
4.3 SIGNALS OF COM PORTS 30
4.3.1 DIFFERENCES OF COM1 SIGNALS 30
4.3.2 DIFFERENCE OF COM2 SIGNALS 33
4.4 MULTILINK CONNECTION 34
4.5 CABLE DIAGRAM AT THE TIME OF REPLACEMENT 34

CHAPTER 5 APPENDIX 35

5.1 WHEN THE DISPLAY UNIT TYPE CANNOT BE CHANGED, 35

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Chapter 1 Specification Comparison
1.1 Specifications of GP-3301S/L and GP-4301TM

GP-3301S/L GP-4301TM

Display GP-3301S STN color LCD

NEW! TFT Color LCD
Type GP-3301L Monochrome LCD
Display GP-3301S 4,096 colors
Colors, UP! 65,536 colors
Levels GP-3301L Monochrome, 16 levels

Display Resolution QVGA (320x240 pixels)

Panle Cutout
156(W)x123.5(H) NEW! φ22 ->See 2.3
Dimensions (mm)
NEW!
External
163(W)x129.4(H)x56.5(D)
Dimensions 167.5(W)x135(H)x59.5(D)
*The rear module is included.
(mm)
->See 2.4
Touch Panel Type Resistive film (Analog)
Application 6MB UP! 8MB
Memory
Backup 320KB 128KB ->See 2.10

Secondary Battery
Backup Battery (Rechargeable Lithium -
battery)
Rated Input Voltage DC 24V
D-Sub 9 pin (plug) D-Sub 9 pin (plug)
COM1
Serial RS-232C/422/485 RS-232C/422/485

I/F D-Sub 9 pin (socket) -

COM2
RS-422/485 ->See 2.6.1 / Chapter 4

Ethernet I/F - NEW! 10BASE-T/100BASE-TX

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 CF Card I/F ✔ - ->See 2.6.2

Printer I/F USB - ->See 2.7.2

USB Host I/F ✔ ->See 2.5

Expansion Unit I/F ✔ - ->See 2.7.3

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1.2 Specifications of GP-3302B and GP-4301TM

GP-3302B GP-4301TM

Monochrome blue mode NEW! TFT Color LCD

Display Type
LCD
Display Colors, Levels Monochrome, 16 levels UP! 65,536 colors
Display Resolution QVGA (320 x 240 pixels)
Panle Cutout
156(W)x123.5(H) NEW! φ22 ->See 2.3
Dimensions (mm)
NEW!
External
163(W)x129.4(H)x56.5(D)
Dimensions 167.5(W)x135(H)x59.5(D)
* The rear module is included.
(mm)
->See 2.4
Touch Panel Type Resistive film (Analog)
Application 6MB UP! 8MB
Memory
Backup 128KB ->See 2.10
Secondary Battery
Backup Battery (Rechargeable Lithium -
battery)
Rated Input Voltage DC 24V
NEW!
D-Sub 9 pin (plug) D-Sub 9 pin (plug)
COM1
Serial RS-232C RS-232C/422/485

I/F -> See 2.6.1 / Chapter 4

D-Sub 9 pin (plug) -

COM2
RS-422 -> See 2.6.1 / Chapter 4

Ethernet I/F - NEW! 10BASE-T/100BASE-TX

Printer I/F USB - ->See 2.7.2

USB Host I/F ✔ ->See 2.5

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Expansion Unit I/F ✔ - ->See 2.7.3

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1.3 Specifications of ST-3301S/B and GP-4301TM

ST-3301S/B GP-4301TM

Display ST-3301S STN color LCD

NEW! TFT color LCD
Type ST-3301B Monochrome blue mode LCD

Display 256 colors (without blink)/

ST-3301S
Colors, 64 colors (with blink) UP! 65,536 colors
Levels ST-3301B Monochrome, 8 levels

Display Resolution QVGA (320x240 pixels)

Panle Cutout
156(W)x123.5(H) NEW! φ22 ->See 2.3
Dimensions (mm)
NEW!
External Dimensions 163(W)x129.4(H)x56.5(D)
167.5(W)x135(H)x59.5(D)
(mm) *The rear module is included.
->See 2.4
Touch Panel Type Resistive film (Analog)
Application 6MB UP! 8MB
Memory
Backup 320KB 128KB ->See 2.10

Secondary Battery
Backup Battery (Rechargeable Lithium -
battery)
Rated Input Voltage DC 24V
NEW! D-Sub 9 pin (plug)
D-Sub 9 pin (plug)
COM1 RS-232C/422/485
Serial RS-232C
-> See 2.6.1 / Chapter 4
I/F
D-Sub 9 pin (plug) -
COM2
RS-422/485 *1 -> See 2.6.1 / Chapter 4
Ethernet I/F - NEW! 10BASE-T/100BASE-TX
Printer I/F USB - ->See 2.7.2

USB Host I/F ✔ ->See 2.5

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 Expansion Unit I/F ✔ - ->See 2.7.3
*1: ST-3301S/B Rev.B or later supports RS-485.

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Chapter 2 Compatibility of Hardware
2.1 Locations of connectors
Connector locations on GP/ST3000 series and GP-4301TM are as follows:

GP-3301S/L, GP-3302B

ST-3301S/B

GP-4301TM

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Interface names
GP-3301S/L
GP-3302B GP-4301TM
ST-3301S/B
1 Power Connector
2 Serial Interface (COM1)
3 Serial Interface (COM2) -
4 CF Card Interface *1 -
5 Expansion Unit Interface -
6 - Ethernet Interface
7 USB Interface (Type A)
8 - USB Interface (Type miniB)
*1: For GP-3301S/L only

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2.2 Display Colors (for GP-3301L/3302B and ST-3301B only)
GP-3301L/3302B and ST-3301B has monochrome LCD, but GP-4301TM has TFT color
LCD. After replacement, the black and white display changes to the color display.
When data of a monochrome model are converted to a color model with GP-Pro EX, the
data may be displayed in colors except black and white depending on a setting of
GP-Pro EX. After conversion, please confirm the display colors of drawing or parts on
screens just in case.

2.3 Panel cutout dimensions

The panel cutout of GP-4301TM is a φ22-mm circular hole. The panel cutout shape and
dimensions of GP-4301TM are different from those of GP/ST3000 series.

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2.4 External Dimensions
For GP-4301TM, the front face display module (display part) and the back face main
module are separated. Compared with GP/ST3000 series, the tickness of the part
appearing on the installation panel differs.

GP-3301S/L

GP-3302B GP-4301TM

ST-3301S/B

A
(the thickness of 5mm 17.5mm
the front bezel)
B
(the depth of the 54.5mm 39mm
back face)

2.5 Transfer cable

To transfer screen data to GP-4301TM, use a USB transfer cable or Ethernet. Use a USB
data-transfer cable (model: ZC9USCBMB1) or a commercial USB cable (USB A/mini-B).
Please note that the cables (CA3-USBCB-01) for GP/ST3000 series cannot be used for
GP-4301TM.

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2.6 Interface
2.6.1 Serial Interface
For the COM ports of GP/ST3000 series and GP-4301TM, the pin assignment and the
shape of plug/socket connector are different. To know the details about them, see
[4.2 Shapes of COM ports] and [4.3 Signals of COM ports].
Because of it, the existing PLC connection cables cannot be used as they are. If you
use the existing connection cables, see [4.5 Cable Diagram at the time of
replacemet].

When the both COM1 and COM2 ports on GP/ST3000 series have setting, devices
can be connected to the COM1 port only after replacement with GP-4301TM.
- When the COM1 port is used for RS-232C connection and the COM2 port for
RS-422/485 connection:
Replace with GP-4301TW instead of GP-4301TM.
- When the both COM1 and COM2 ports are used for RS-422/485 connection:
Please contact our sales office in your region.
(http://www.pro-face.com/customer/contact.html)

2.6.2 CF Card Interface (for GP-3301S/L only)

GP-4301TM is not equipped with a CF card slot. You can use an USB storage device
instead of a CF card but GP-4301TM supports the function of saving sampled data in
CSV only (GP-Pro EX Ver. 3.01 or later is required). If you continue to use any other
functions set with a CF card for GP-3301S/L, replace GP-3301S/L with
GP-4301T/TW.

You can use the storage devices below instead after replacement:
GP-4301T SD card
GP-4301TW USB storage device

* GP-4301T/TW supports the same functions as GP-3301S/L.

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2.7 Peripheral units and option units
2.7.1 Barcode reader connectoin
GP-4301TM allows you to connect a barcode reader on its USB interface (Type A) in
the same as GP/ST3000 series.
For the models GP-4301TM supports, see [OtasukePro!]
(http://www.pro-face.com/otasuke/qa/3000/0056_connect_e.html). H

And if you connect a barcode reader to GP-4301TM, be sure to supply power to the
barcode reader from an external power source (such as a USB hub supporting
self-power supply). When no power is supplied from an external power source, if the
barcode reader consumes more electricity than expected, operation of GP-4301TM
will become unstable and reset may be activated.

2.7.2 Printer connection

GP-4301TM does not support printer connection. A printer for GP/ST3000 series
cannot be used.

2.7.3 Expansion Unit

GP-4301TM is not equipped with an expansion bus unit. The expansion units (such
as CC-LINK) used for GP/ST3000 series cannot be used.

2.7.4 Isolation Unit

The isolation unit for GP/ST3000 series (CA3-ISO232-01, CA3-ISO485-01) cannot
be used for GP-4301TM.

2.8 Power Consumption

The power consumption of GP/ST3000 series is different from that of GP-4301TM.

GP-3302B
GP-3301S/L GP-4301TM
ST-3301S/B
26W or less 18W or less 6.8W or less

For the detailed electric specifications, see the hardware manual.

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2.9 Materials/Colors of the body
The materials and the colors of GP-2301S/L and GP-4301TM are as follows:

Color Material
GP3000 series Silver Aluminum alloy
ST3000 series Light Gray Resin
GP-4301TM Dark Gray Resin with glass

2.10 Backup Memory (SRAM)

GP-4301TM does not have SRAM, but uses a part of application memory as a backup
area. Data in the backup area is retained even after power off or reset of GP-4301TM in
the same way as SRAM. The functions possible for backup on GP-4301TM are as
follows:

- Alarm History (Up to 768)

- Recipe (Filing data)
- Brightness/Contrast values

* For the functions above, data is saved in the backup area at the time of “Save”.
* Sampling and clock data is not backed up. If you need these functions, replace
GP/ST3000 series with GP-4301TW (SRAM size: 128KB) or GP-4301T (SRAM size:
320KB) instead.

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Chapter 3 Replacement Procedure
3.1 Work Flow

Installation Screen Communication

Check the compatibility of Check the restrictions for Check the connection
hardware in Chapter 2. GP-4301TM with GP-Pro EX between GP-4301TM and a
Reference Manual. PLC in the GP-Pro EX

Device/PLC Connection
Manual.

Remove GP/ST3000 Receive screen data from

series. GP/ST3000 series *1

Change the received data

Process the panel. on GP-Pro EX.

Check and modify the data

on GP-Pro EX.

Transfer the screen data to Connect GP-4301TM and

Install GP-4301TM. GP-4301TM. the PLC with a cable.

Connect the power cord. Start connection and check

the communication.

Check the performance

and start operation.

*1: This step is required if screen data is saved only in the display unit, not in any other device.

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3.2 Preparation

Requirements for PC in which GP-Pro EX Transfer Tool is installed *2

receiving screen data A USB data-transfer cable (model: CA3-USBCB-01)
from GP/ST3000 *GP/ST3000 series also allows you to transfer screen data
series *1 with a CF card/USB flash drive, or Ethernet.
Requirements for PC in which GP-Pro EX Ver.2.71 or later is installed.
converting screen A USB datda-transfer cable (model: ZC9USCBMB1) or
data of GP/ST3000 A commercial USB cable (USB A/mini-B)
series and * GP-4301TM also allows you to transfer screen data via USB
transferring them to flash drive or on Ethernet.
GP-4301TM
*1: This step is required if screen data is saved only in the display unit, not in any other device

*2: The software version must be the same as or higher than the version that you used when creating screen

data for GP/ST3000 series.

We recommend you upgrade to the latest version if you don’t know the version you use. Upgrade it on our

website OtasukePro! (http://www.pro-face.com/otasuke/).

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3.3 Receive screen data from GP/ST3000 series
This section explains, as an example, how to receive screen data from GP/ST3000
series using a transfer cable, CA3-USBCB-01. If you have backed up screen data, this
step is unnecessary; skip to the next section [3.4 Change the Display Unit type].

(1) Connect a USB transfer cable to a unit of GP/ST3000 series.

(2) Make sure that the [Device] in the “Transfer Settings Information” is set to [USB].
If not, click the [Transfer Setting] button to open the “Transfer Setting” dialog box.
Select [USB] in the Communication Port Settings field and click [OK].

(3) Start GP-Pro EX Transfer Tool and click the [Receive Project] button.

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(4) Click [Receive Project], and the following dialog box will appear. Specify a place to
save the received data in and a project file name, and then click [Save] to start
transfer.

The following dialog box appears during transfer and you can check the
communication status. (The display unit enters the Transferring mode and
communication with the device such as a PLC is terminated.)

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(5) When transfer is completed, the status displayed in the dialog box will change from
[Transferring] to [Complete Transfer]. Click [Close] to close the dialog box.

Display Screen

(6) Close the Transfer Tool.

NOTE
If you receive the project files that use CF card data such as Recipe Function
(CSV data), the following dialog box will appear during transfer. Specify a place
to save the CF card data in. Click [OK], and the [Receive Project] dialog box will
return and transfer will be completed.

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3.4 Change the Display Unit type
Open the received project file (*.prx) of GP/ST3000 series with GP-Pro EX and change
the display unit type to GP-4301TM.

(1) Open the received project file (*.prx) with GP-Pro EX.
(2) Change the Display Unit type to GP-4301TM in [Display] on [System Settings] of
GP-Pro EX.

NOTE
・ If you change the Display Unit type, the parts or the function settings that do not
support GP-4301TM are deleted, initialized, or changed.
For the functions GP-4301TM doesn’t support and the important notes, see [3.6
Differences of software].
・ Depending on a setting of the project file, the message as shown below appears,
the Display Unit may not change to GP-4301TM.
When the message appears, check the cause and the solution in [5.1 When the
Display Unit cannot be changed] and then change the Display Unit again.

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3.5 Transfer screen data to GP-4301TM
Transfer the project file after display unit type change to GP-4301TM.
You can transfer data to GP-4301TM via;

・ A USB data transfer cable (model: ZC9USCBMB1)

・ A commercial USB cable (USB Type A/mini B)
・ USB storage device
・ Ethernet

But this section explains, as an example, how to transfer screen data with a USB
transfer cable (model: ZC9USCBMB1).

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(1) Connect your PC and the GP unit with a USB transfer cable (model: ZC9USCBMB1).
If the driver of the cable has not been installed on you PC, a dialog box will appear.
Please follow the instructions.

NOTE
The “Hardware Installation” dialog box as follows may appear during installing
the driver of a USB depending on the security level of Windows XP. Click
[Continue Anyway] to start installing the driver. When installation is completed,
click [Finish].

(2) Turn on the power of GP-4301TM. The “Initial Start Mode” screen will appear on the
display unit. After transferring a project file once, this screen will not appear again.

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(3) On the GP-Pro EX’s State Toolbar, click the [Transfer Project] icon to open the
Transfer Tool.

To transfer a different project file, click the [Select Project] button and select a
project file.

(4) Make sure that the [Device] in the “Transfer Settings Information” is set to [USB].
If not, click the [Transfer Setting] button to open the “Transfer Setting” dialog box.
Select [USB] in the Communication Port Settings field and click [OK].

(5) Click [Send Project] to start transfer. When the following dialog box appears, click
[Yes]. This dialog box doesn’t appear when the same project file is sent again.

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(6) The following dialog box appears during transfer and you can check the
communication status. (The display unit enters the Transferring mode and
communication with the device such as a PLC is terminated.)

Display Screen

(7) When transfer is completed, the status displayed in the dialog box will change from
[Transferring] to [Transfer Complete]. Click [Close] to close the dialog box.

The display unit will be reset and a screen of the transferred project file will be
displayed.

(8) Close the Transfer Tool.

(9) Click the [X] mark on top right of the screen or [Project]->[Exit] to close GP-Pro EX.

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3.6 Differences of software
If you change the Display Unit to GP-4301TM on GP-Pro EX after receiving data from
GP/ST3000 series, the function settings GP-4301TM does not support are deleted from
the project file.

The functions to be deleted from the GP-Pro EX’s project files.

Parts Text Alarm
Alarm
VM Unit Display (Image Unit Display)
Special Data Display
Sampling Data Display
Special Data Display
The other Sound Settings
functions Transfer CSV Data on Recipe
Sampling Setting *1

*1: In the Sampling settings, only the [Display/Save As CSV, Printing Language] setting that is not supported
by GP-4301TM is deleted.

NOTE
For details of GP-Pro EX’s parts and functions that cannot be used or have
restrictions on GP-4301TM, refer to [For Those Using GP-4*01TM] in the GP-Pro EX
Reference Manual.
(http://www.pro-face.com/otasuke/files/manual/soft/gpproex/new/refer/mergedP
rojects/welcome/welcome_rr_gm4000.htm)

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Chapter 4 Communication with Device/PLC
4.1 Drivers
More connectable drivers will be added.
For the devices/PLC each driver supports, see [Connectable Devices]
(http://www.pro-face.com/product/soft/gpproex/driver/driver.html).

4.2 Shapes of COM ports

GP-3302B
GP-3301S/L GP-4301TM
ST-3301S/B
D-Sub 9 pin (plug) D-Sub 9 pin (plug) D-Sub 9 pin (plug)
RS-232C/422/485 RS-232C RS-232C/422/485

COM1

D-Sub 9 pin (socket) D-Sub 9 pin (plug)

RS-422/485 RS-422/485 *1

COM2 -

*1: ST-3301S/B Rev.B or later supports RS-485.

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4.3 Signals of COM ports
4.3.1 Differences of COM1 signals
For GP-3301S/L
RS-232C (plug)

RS-422/485 (plug)

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For GP-3302B and ST-3301S/B
RS-232C (plug)

For GP-4301TM
RS-232C (plug)

* There’s no VCC output.

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RS-422/485 (plug)

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4.3.2 Difference of COM2 signals
For GP-3301S/L
RS-422/485 (socket)

For GP-3302B and ST-3301S/B

RS-422/485*1 (plug)

*1: ST-3301S/B Rev.B or later supports RS-485.

For GP-4301TM

None

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4.4 Multilink Connection
For the communication drivers that support serial multi-link, see [Which drivers
support serial multilink communication?]
(http://www.pro-face.com/otasuke/files/manual/gpproex/new/device/com_mlnk.htm
).

4.5 Cable Diagram at the time of replacement

The connetion cable used for GP/ST3000 series can be also used for GP-4301TM. But,
please note that there are the precautions and restrictions as described below.

・ Please check the connection configurations GP-4301TM supports with GP-Pro EX

Device/PLC Connection Manual before using the connection cable.
(http://www.pro-face.com/otasuke/files/manual/gpproex/new/device/index.htm)

・ The cable used for connection to GP-3301S/L via COM2 can be used for
GP-4301TM with a COM Port Conversion Adapter (CA3-ADPCOM-01) added in the
following cases;

In all other cases, the operation is not guaranteed and it's recommended to prepare
a new connection cable. To check the cable diagram, please refer to GP-Pro EX
Device/PLC Connection Manual.

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Chapter 5 Appendix
5.1 When the Display Unit type cannot be changed,

Depending on a project file’s function setting, the following message may appear and
the Display Unit may not be able to be changed to GP-4301TM.

[Cause]
- Logic settings are made.-> Solution (1)-1
- L system variables are used.-> Solution (1)-2
- I/O Settings are made.-> Solution (1)-3
- Unsupported variables are registered in Symbol Variable Setting.-> Solution (1)-4
- In Logic Programs Setting, [Address Format] is selected.-> Solution (1)-5

[Cause]
- In Device/PLC Setting, multiple communication drivers are registered.
-> Solution (2)-1
- A communication driver that is not supported is set.-> Solution (2)-2
- The function using the unsupported port (COM2) is set. -> Solution (2)-3

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[Cause]
[Master] is selected in [Ether Multilink Settings].-> Solution (3)-1

[Solutions]
(1)-1: Logic settings are made.
Because GP-4301TM does not support Logic Function, if logic settings are made, the
Display Unit cannot be changed. Open the logic screens, check the logic settings, and
delete them.

(1)-2: L system variables are used.

[L System Variable] is a logic variable starting with [#L_].
Because GP-4301TM does not support Logic Function, [L System Variable] cannot be
used. When [L System Variable] is used, the Display Unit cannot be changed. Check
where the address is used and delete it or replace it with another address.

1. Click [Project]->[Utility]->[Cross Reference].

2. Select [Symbol Variable] for [Device/PLC].
If a L system variable is used, an address starting with [#L_] is displayed.

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(1)-3: I/O settings are made.
GP-4301TM does not support I/O Connection. If I/O Settings are made, the Display Unit
cannot be changed.
Click [Project]->[System Settings]->[I/O Driver] and check the displayed I/O settings.

(1)-4: Unsupported variables are registered in Symbol Variable Setting.

GP-4301TM supports only the variables of [Word Address] or [Bit Address].
Click [Common Settings]->[Symbol Variable]. If variables except [Word Address] or
[Bit Address] are registered, the Display Unit cannot be changed. If a variable except
these 2 types is registered, change the type to [Word Address] or [Bit Address], or
replace it with another address.

(1)-5: In Logic Programs Setting, [Address Format] is selected.

GP-4301TM does not support Logic Function. When [Address Format] is selected for
[Register Variable] in the Logic Programs Setting, even if no logic setting is made, the
Display Unit cannot be changed.
Click [Project]->[System Settings]->[Logic Programs]. If [Address Format] is selected
for [Register Variable], change it to [Variable Format].

(2)-1: In Device/PLC Setting, multiple communication drivers are registered.

For GP-4301TM, only one communication driver can be set. (But, if [Enable Ethernet
Multilink] is selected, and GP-4301TM is used as a slave, up to 2 can be set.) If the
Device/PLC setting exceeds the upper limit, the Display Unit cannot be changed.
Click [Project]->[System Settings]->[Device/PLC]. Check the displayed Device/PLC
setting.

(2)-2: A communication driver that is not supported is set.

If a communicaton driver that cannot be used for GP-4301TM is set, the Display Unit
cannot be chagned.
Click [Project]->[System Settings]->[Device/PLC] and check the displayed Device/PLC
setting and change the communication driver setting.
For the communication drivers that are supported by GP-4301TM, see [4.1 Driver List].

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(2)-3: The function using the unsupported port (COM2) is set.
COM1 is the only one port that GP-4301TM has. If COM2 is selected for [Port] in the
[Script] setting, the Display Unit cannot be changed.
Click [Project]->[System Settings]->[Script]. Check the displayed port setting of
Script.

(3)-1: [Master] is selected in [Ether Multilink Settings].

GP-4301TM cannot be a master at the time of Ether multilink connection (can be a slave
only.). If [Master] is selected in [Ether Multilink Settings], the Display Unit cannot be
changed.
After disabling the Ether multilink setting, change the Display Unit.

1. Click [Project]->[System Settings]->[Display Unit].

2. In [Ether Multilink Settings] in the [Extended Settings] tab, uncheck [Enable Ether
Multilink].

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