CI854 and siemens s7-300 comm problem.

Hi, everybody.

I'm new in ABB AC800M plc. and i have problem with profibus communication between CI854 and s7-300.

I read latched Errors and warning bit it says (16#400) Device failure. And there is not any fault lamp. I check The s7-300 side plc there is ok.

I haven't new CI854 module. so i cannot try to change.

Is it problem with device or some config files or program are missing?

Elnur Rank: 6375

Asked 6 years ago

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Answers

Hi,

Communication to Seimens device from ABB modules should be byte swapped via profibus.

Make sure the bytes are swapped then the communication will be done.

Regards,

Sridhar C

Sridhar C Rank: 90

Answered 6 years ago

You need to use a DP-DP coupler to do that, you just need to import the GSD file of the DP/DP coupler and download hardware in both sides.

You need to swap bytes, because in one side you have CPU motorola and the other uses CPU intel.

Marlon Manica Rank: 16

Answered 6 years ago