GT10/GT30

4.12 Connecting with a PLC by Omron Corp.

 

 

Setting the communication conditions for the PLC

The settings on the PLC side are as shown below. Settings cannot be entered for some items, depending on the model, but if a setting cannot be entered, it means that setting is not needed.

Item

Value Set

PLC main unit mode

Monitor mode

Mode setting

Higher–order link

Procedure

1 : N

Communication speed setting

19200 bits/s

Data length

7 bits

Parity check

Yes, Even

Stop bits

1 bit

Station No.

No. 0

CTS specification

Normally on

5 V supply

Not supplied

Communication method

RS232C

For most models of PLCs, the following method can be used for communication, but some items may vary depending on the model. Please refer to the instruction for the PLC being used when entering settings.

Communicating with the RS232C port of the CPU unit

The system areas should be set as indicated below.

Address

Value set

Setting contents

DM6600

0201 (HEX)

PLC main unit mode setting (monitor mode)

DM6645

0001 (HEX)

RS232C port mode setting (higher–order link)

DM6646

0004 (HEX)

Communication conditions settings (19200 bits/s, 7 bits, even, 1 bit)

DM6668

0000 (HEX)

Machine no. setting (Machine No. 0)

 

 

 

Communicating with a communication port

The system areas should be set as indicated below.

Communicating with Port A

Address

Value set

Setting contents

DM6600

0201 (HEX)

PLC main unit mode setting (monitor mode)

DM6550

0001 (HEX)

RS232C port mode setting (higher–order link)

DM6551

0004 (HEX)

Communication conditions settings (19200 bits/s, 7 bits, even, 1 bit)

 

 

 

Communicating with Port B

Address

Value set

Setting contents

DM6600

0201 (HEX)

PLC main unit mode setting (monitor mode)

DM6555

0001 (HEX)

RS232C port mode setting (higher–order link)

DM6556

0004 (HEX)

Communication conditions settings (19200 bits/s, 7 bits, even, 1 bit)

 

 

 

Communicating with a higher–order link interface unit

Always make sure the CPU mode is set to the monitor mode.

The baud rate is set using the DIP switches and rotary switch on the link interface unit. For detailed information, please refer to the instruction manual of the unit being used.

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