Connection Parameters Needed for HMI/cMT Products to Communicate with a Mitsubishi AJ71 using EBPro (EasyBuilder Pro)

Introduction

All Maple Systems HMIs programmed with EBPro (EasyBuilder Pro), including every cMT X Series and cMT Series model, are compatible with a Mitsubishi AJ71. Configure your Controller and HMI/cMT with the following parameters to establish reliable communication.

Supported Series: Mitsubishi A series PLC with AJ71C24 communication module using the Computer Link protocol

Website: http://www.mitsubishi-automation.com

HMI Setting

Parameters	Recommended	Options
PLC type	Mitsubishi AJ71	Mitsubishi AJ71 (AnA/AnU CPU), Mitsubishi AJ71 (Format 4)
PLC I/F	RS485 4W	RS485 4W, RS232
Baud rate	19200	9600, 19200
Data bits	8	8
Parity	Even	Even, Odd, None
Stop bits	1	1
PLC sta. no.	0

PLC Setting

Parameter	Value
Communication mode	Computer Link protocol 9600, Even, 8, 1 (default)
Mode setting switch	Format 1
Parity check	Enable
Sum check	Enable

Device Address

Bit/Word	Device type	Format	Range	Memo
B	`X`	HHHH	0 ~ ffff	Input Bits
B	`Y`	HHHH	0 ~ ffff	Output Bits
B	`M`	DDDDD	0 ~ 65535	Internal Relays
B	`L`	DDDDD	0 ~ 65535
B	`T`	DDDDD	0 ~ 65535
B	`C`	DDDDD	0 ~ 65535
B	`B`	HHHH	0 ~ ffff
B	`F`	DDDDD	0 ~ 65535
W	`TV`	DDDDD	0 ~ 65535	Timer Preset Value
W	`CV`	DDDDD	0 ~ 65535	Counter Preset Value
W	`D`	DDDDD	0 ~ 65535	Data Registers
W	`W`	HHHH	0 ~ ffff
W	`R`	DDDDD	0 ~ 65535

Wiring Diagram

NOTE: The serial port pin assignments may vary between HMI models.

Diagram 1: RS-485 4W

HMI	Direction	PLC
Pin assignments		AJ71C24 RS422 Terminal
Rx-	↔ (bidirectional)	SDB
RX+	↔ (bidirectional)	SDA
Tx-	↔ (bidirectional)	RDB
Tx+	↔ (bidirectional)	RDA
GND	↔ (bidirectional)	GND

Diagram 2: RS-232

HMI	Direction	PLC
Pin assignments		A1SJ71UC24-R2 RS232 9P D-Sub Male
Rx	↔ (bidirectional)	TXD-3
Tx	↔ (bidirectional)	RXD-2
GND	↔ (bidirectional)	GND-5
	↕︎ (tie)	DCD-1 DTR-4 DSR-6
	↕︎ (tie)	RTS-7 CTS-8