Connection Parameters Needed for HMI/cMT Products to Communicate with a Mitsubishi AJ71 (Format 4) 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 (Format 4). 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 Settings

Parameters	Recommended	Options
PLC type	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 Settings

Parameter	Value
Communication mode	Computer Link protocol 9600, Even, 8, 1 (default)
Mode setting switch	Format 4
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	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 Diagrams

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

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

RS-232

HMI	Direction	PLC
Pin assignments		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