CM1241, LED's Rx Tx flashing, but nothing receiving

Greeting,

Please see attached both LED's Rx Tx flashing on 1Hz but nothing receiving at DATA_PTR output.

We are using Profibus connector at CM1241 port for termination resistance and R=120ohm at Modbus slave terminal.

Regard's

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Split from CM 1241 RS485 Modbus RTU.

Hello,
I recommend to evaluate the outputs of MB_CLIENT. Please note: they are displayed dynamically.

Regards,
Kaulquappe

Thanks for reply, now we are able to read the data for both slave but "MB_MASTER_DB".STATUS giving 8200 error after every 2 or 3 second.

this error occur when we connect more than one slave, but data receiving for both slave according to RESP_TIME.

Regard's 

Hello Sarfraz,
error 8220 means that you start a request before the previous one was finished. Do you use a clock to trigger a request? I recommend to evaluate the outputs DONE and ERROR to start the next request.

Regards,
Kaulquappe

New question published by mohsensh is split to a separate thread with the subject Connect delta temperature controller with S7-1200.

Best regards
Min_Moderator