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Mitsubishi Melsec A OPC Server Configuration Guide

Channel Configuration

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Serial Serial Link (Use AJ71C24 Serial Interface). Only Protocol Mode 1 with sum checking is supported.
Ethernet Ethernet Link (Use AJ71E71 Ethernet Interface Module). When configuring the TCP/IP port, the port number and mode (TCP/IP or UDP/IP) must be the same as that configured in the Melsec Ethernet module. Please refer to Melsec Ethernet Interface Module User's manual on how to configure it. Only Binary Code is supported. Use Unpassive open format.

Make sure the dip switch on your Ethernet module is set as follows
SW1: Line processing selection during TCP timeout error. ON.
SW2: Data code setting. OFF for BINARY.
SW3-SW6: Not used, should be OFF.
SW7: CPU exchange timing setting. ON for write enable
SW8: Initial timing setting. OFF.

Master IOServer will initiate all requests.
Slave IOServer will wait for and respond to requests.

Device Configuration

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Serial
Address Station Number (0-31).
PLC Type Use ACPU or AnA/AnUCPU commands.
Wait Time Wait time in units of 10ms (0 - 15).
Ethernet
Wait Time ACPU monitor timer in units of 250 ms (0 - 65535).
PC Number: PC CPU Number. Set to 255 when accessing local stations.

Variable Types

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Last updated: Sun, 28 Feb 2021 02:19:49 GMT