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Problem on Profibus when MP377 changed with a new one

11/21/2013 5:00 PM	Rate (0)
maurizio_XXXX Member Joined: 3/13/2009 Last visit: 5/30/2025 Posts: 1 Rating: (0)	I've replace a MP377 part number (6AV6 644-0AC01-2AX1) with the same MP377 but new part(6AV6 644-0AC01-2AX1). The HMI, works fine but this panel was configure as PROFIBUS DP slave in the PLC configuration (safety plc CPU-F), so now I've on the CPU the Bus fault led ON and the error on the slave of 'no plausible answer'. How i can solve the problem (I don't wont disable the slave profibus from the PLC programm). Is possible for the new panel emulate the old panel on the PROFIBUS so in not neccesary change the GSD file? Thanks

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11/27/2013 9:37 AM	Rate (0)
Sandman Platinum Member Joined: 4/29/2010 Last visit: 1/20/2025 Posts: 1557 Rating: (161)	Hello Maurizio, do you mean in this case the direct keys (Profibus DP direct keys)? With best regards

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11/27/2013 10:22 AM	Rate (0)
@shish Posts: 291 Rating: (6)	maurizio_XXXX I've replace a MP377 part number (6AV6 644-0AC01-2AX1) with the same MP377 but new part(6AV6 644-0AC01-2AX1). The HMI, works fine but this panel was configure as PROFIBUS DP slave in the PLC configuration (safety plc CPU-F), so now I've on the CPU the Bus fault led ON and the error on the slave of 'no plausible answer'. How i can solve the problem (I don't wont disable the slave profibus from the PLC programm). Is possible for the new panel emulate the old panel on the PROFIBUS so in not neccesary change the GSD file? Thanks Tell me: 1. Do you want your new panel to be configured on Profibus network too, as the old one? 2. Have you downloaded your backup to the panel? 3. If already downloaded the HMI backup, check the end resistor of the profibus on panel, it should be ON if panel is the last node of the profibus network.
@shish Posts: 291 Rating: (6)	Last edited by: @shish at: 11/27/2013 11:39 AM
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