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connecting Modbus cp1L-M to Beckhoff bk7300

Started by enric, 8 Feb 2022

1 post in this topic

Posted 8 Feb 2022 (edited)

Hello friends,

I am an Omron PLC user, but have never used modbus before. I have to connect an Omron CP1L-m to Beckhoff bk7300 via modbus serial gateway. 2-wire RS-485 connection (CP1W-CIF11). I have seen an easy to use Modbus RTU master for CP1L CP1H CJ1 CJ2 CS1 but the examples are not for dual port CP1L-m. If I change the PLC model "CP1HCP1LModbusDualPort" to "CP1L-M", the compiler tells me a lot of warnings about variable types. Is Modbus RTU Master easy to use for CP1L CP1H CJ1 CJ2 CS1 compatible with CP1L-M dual port (port 2)? I have tried to use it but it didn't work, error 02, illegal function code.

Somebody could help me?

Thank you

Enric

Edited 8 Feb 2022 by enric
spelling errors

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