[?]: PROBLEM IN NETWORK PROFIBUS DP

[RUTRA_69]

i'm with a very strange problem.
i got a C7 CPU 636 on network profibus dp with several i / o's remote.
some times some of these digital i / o's change of state logic even with physical entry not change.
i put in user program a block OB86 to not stop cpu.
how i met monitoring's performance of the profibus network to see if it does have some delays as entries change?

saluto

rutra

[PLC_ITA]

CPU 636 ???

please describe your hardware ( cpu / im interface / i/o card and anything )

[RUTRA_69]

yes my friend
this is a one hmi c7, embedded with a cpu 315 dp.
this a product discontinuation of siemens.
i found the problem .
had a bad connection in profibus net.
and sometimes ocurrs a bug on the net profibus .
making inputs and outputs of some remote switch to zero.
i monitor the cpu with "module information" and determines that there apart the error of a some remotes.
i remove the clearance connector contacts.
even so thank you for your attention.
i will stay too happy to help you.


saluto

artur lima

[rahulshukla491]

hi!!,
I HAVE ALSO USED C7-635 KEY IT WORKS FINE ...............ITS MY REQUEST PLEASE CHECK YOUR EARTHINGS.