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D435 (DP slave) profibus status

Created by: piotras256 at: 3/1/2010 8:20 AM (2 Replies)

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3/1/2010 8:20 AM	Rate (0)
piotras256 Posts: 3 Rating: (0)	Hello. I have a Profibus connection between D435 (slave) and S7-416 (master). I want to determine status of DP connection in D435. Is it possible? I have searched forum but every one seem to run D435 and PLC connection as master<->master configuration. Peter
piotras256 Posts: 3 Rating: (0)
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3/10/2010 10:26 AM	Rate (0)
Bonsai72 Advanced Member Joined: 2/12/2008 Last visit: 4/9/2021 Posts: 67 Rating: (0)	Hi It seems stupid but I use a clock input from S7 to check the profibus connection.

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3/12/2010 2:13 PM	Rate (0)
JakitGT Posts: 31 Rating: (0)	I use a counter in simotion that counts up by one every scan in the background task, then send that over profibus. This is a basic heartbeat solution. counter:=counter+1; On the PLC side, have a timer set for every 50ms or (or whatever you want) to store the counter valuecoming over from simotion to a variable andstoring the old value to another variable. Then do a compare of these values. If they are the same, you know you have either lost communication or simotion is in stop.
JakitGT Posts: 31 Rating: (0)
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