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WKla

CJ1M communication protocol

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Hello, I am not familiar with the Omron PLC's. A PC is connected to the peripheral port of an CJ1M CPU12 PLC. The write command the PC is transmitting to the PLC looks like this (ASCII): "@00WD0070010055*." Can you tell me what kind of communication protocol it is using? It is a public or proprietary protocol? Thank you!

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Hello, That is an OMRON Host link (C-mode) command, DM Area Write. Manual W342-07 covers the protocol.

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Thank you! I've found this version: W342-E1-15.

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