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PLC Communication Settings
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M2M Gateway PLC Communication Settings
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34
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3.
Serial Connection with Mitsubishi PLC
The following is a setting example for Serial communication with the Mitsubishi PLC MELSEC-Q series.
See below for the configuration example regarding the communication condition.
RS-422 Communication Cable Connection - an example
Configure RS-422 connection as illustrated below. Perform DIP switch settings for M2M Gateway.
M2M Gateway
PLC
COM A port
Full duplex
Terminator : ON
RS-422 connection (Full-duplex connection)
MC protocol : 4C frame, Type
4
Device : D1000- D1009
Access cycle : 1 sec.
Device : L1000 - L1009
Access cycle : 500 ms.
Mitsubishi MELSEC-Q series
Communication Unit : QJ71C24N
Baud rate : 9600
Data length : 8
Stop bits : 1
Parity
: Odd
Sum check : Yes
Station number : 1
Terminator ON
Serial communication Unit
DIP switch setting
Full duplex
Terminator ON