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ET 200s (4DI DC24V ST) losing inputs

6/14/2018 11:42 AM	Rate (0)
Muchecheti Posts: 3 Rating: (0)	morning, What would cause the et200s digital inputs station to momentarily loose inputs while at the same time the IM151 card still remains in data exchange? We do not loose the Node on profibus when this happens so we hoping to get some ideas on what could be happening there. regards
Muchecheti Posts: 3 Rating: (0)
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6/14/2018 11:57 AM	Rate (0)
mopS04 Posts: 5521 Rating: (1058)	hi Muchecheti, How is it wired? How do you notice the "losing"? regards,
mopS04 Posts: 5521 Rating: (1058)
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6/14/2018 11:58 AM	Rate (0)
Towome Platinum Expert Joined: 7/9/2015 Last visit: 1/15/2026 Posts: 4496 Rating: (644)	Hi, did you check diagnostic buffer of your PLC if there are any entries that could be related to behavior? Regards, Towome
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6/14/2018 12:37 PM	Rate (0)
Muchecheti Posts: 3 Rating: (0)	MopS04 We have set some traps on our code to monitor all the inputs on the input station as a way of trying to figure out which input we were actually loosing but only to find that all the connected inputs were getting lost at times. We are using the 6ES7 131-4BD01-OAAO Digital input modukes and their backplanes with permanent wiring on.
Muchecheti Posts: 3 Rating: (0)
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6/14/2018 12:42 PM	Rate (0)
Muchecheti Posts: 3 Rating: (0)	Towome, I checked the diagnostic buffer, there are no errors/diagnostic messages picked from the station under discussion.
Muchecheti Posts: 3 Rating: (0)
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6/14/2018 12:52 PM	Rate (0)
mopS04 Posts: 5521 Rating: (1058)	Muchecheti MopS04 We have set some traps on our code to monitor all the inputs on the input station as a way of trying to figure out which input we were actually loosing but only to find that all the connected inputs were getting lost at times. We are using the 6ES7 131-4BD01-OAAO Digital input modukes and their backplanes with permanent wiring on. that was not the answer is was expecting how is the module wired? where does the wires and the voltage come from? How do you access the inputs? until where have you checked that the signal is not there? regards,
mopS04 Posts: 5521 Rating: (1058)
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