PCL devices losing connection

AVIF
Here to help

PCL devices losing connection

HI,

 

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.

 

AVIF_1-1618608786353.png

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
PhilipDAth
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.

Inderdeep
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. 

Regards/Inder
Cisco IT Blogs awarded in 2020 & 2021
www.thenetworkdna.com

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

cmr
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.

Get notified when there are additional replies to this discussion.