PCL devices losing connection

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PCL devices losing connection



we have about 30 Allan Bradley PLC devices on our network they randomly lose connection for a short period of time.


They're all connected to one port on our Main MS120 switch through a series of unmanaged sub switches.



We can't make any rhyme or see a pattern as to why this is happening.


Maybe anyone has some inside or tips.


Thank you.


4 Replies 4
Kind of a big deal
Kind of a big deal

That just means it hasn't seen traffic from those devices for a while.  Perhaps they aren't generating traffic that flows through the MS120.

Kind of a big deal
Kind of a big deal

Is it losing or it is not generating the traffic ? Did you test with some other system to check if you can get the traffic from PLCs. 

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We see it in the PCL device monitoring that they actually lose connection 

Kind of a big deal
Kind of a big deal

Have you tried connecting one directly to the MS120?  The unmanaged switches could not be properly interacting with the MS120.

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