Hello everybody.

I work on profibus communication between 2 same PLC (S7 300 with CPU 315F 2PN/DP).
When I configured master and slave hw and uploaded to plc, SF and BF1 leds are both ON on master PLC. SF is on all the time and BF1 is blinking.

I don't know what is the problem.
Here is my Diagnose from Diagnostic buffer of CPU.

Please help me!

Best regards.

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Split from Communication between 2 PLC 315 2PN/DP via profibus port of each CPU..

Closed cause question posted twice.

The second thread with the subject Profibus Communication between two PLC is published within the conference Communication / Networks.

Best regards
Jen_Moderator