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Introduction

All Maple Systems HMIs programmed with EBPro (EasyBuilder Pro), including every cMT X Series and cMT Series model, are compatible with a Mitsubishi A3A/A3N/A1SH/A2SH. Configure your Controller and HMI/cMT with the following parameters to establish reliable communication.

Supported Series: Mitsubishi A3A,A3N,A1SH,A2SH

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

HMI Setting

ParametersRecommendedOptionsNotes
PLC typeMitsubishi A3A/A3N/A1SH/A2SH
PLC I/FRS232
Baud rate9600
Data bits8
ParityOdd
Stop bits1
PLC sta. no.0
File register00 ~ 8*Note
Online simulatorNO

NOTE: Parameter → Memory capacity → File register

GX Works2 A parameter dialog showing Memory Capacity tab with File register set to 1K points.

Device Address

Bit/WordDevice TypeFormatRangeMemo
BXHHHH0 ~ ffffInput Relay
BYHHHH0 ~ ffffOutput Relay
BMDDDDD0 ~ 65535Auxiliary Relay
BBHHHH0 ~ ffff
BFDDDDD0 ~ 65535
WTVDDDDD0 ~ 65535Timer Memory
WCVDDDDD0 ~ 65535Counter Memory
WDDDDDD0 ~ 65535Data Register
WWHHHH0 ~ ffff
WRDDDDD0 ~ 65535

Wiring Diagrams

NOTE: Due to hardware limitations, this PLC is not supported by HMI models without RTS/CTS.

Use the RS422 to RS232 PLC programming cable (shown as follows).

Wiring diagram showing Mitsubishi A series PLC connected to an HMI via RS422 to RS232 programming cable converter.

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

Diagram 1: RS-232

HMIPLC Programming ConverterPLC
Pin assignmentsRS422
25P D-Sub
Male
RxTX / TX+2 RX+
TxRX / RX+3 TX+
GNDGND / DTR+4 DSR+
RTSCTS / GND7 GND
CTSRTS / TX-15 RX-
RX-16 TX-
DTR-17 DSR-

Diagram 2: cMT-G01, cMT-G02, cMT-SVR-100/200, cMT-FHDX-820, cMT-SVRX-820

HMIDirectionPLC
Pin assignmentsA Series PLC CPU
25 pin
RS485-4W
8 TX+↔ (bidirectional)2 RX+
9 TX-↔ (bidirectional)15 RX-
6 RX+↔ (bidirectional)3 TX+
7 RX-↔ (bidirectional)16 TX-
1 Data+↔ (bidirectional)4 CTS+
4 Data-↔ (bidirectional)17 CTS-
5 GND↔ (bidirectional)7 GND
↕︎ (tie)20 21 Short