Hello the community ,

i hope you are doing good and safe.

We have some issue with the SIS NET Repeaters it gives some errors such us " crossed" or "SIS Net Broken" that's related to optical fiber. even if we still have the communication but i have remarked that on DeltaV Diagnostic under the SIS Net Repeater connection list more than two sis net repeater gives one error message in the local_Peer_Status" Error rate exceed 5% percent"  in this time we lose the communication for a moment and it come back. it gives red cross and in that time we have to change the the status OPT to Always use value in order to avoid a trip.

The first step is to check all the FO link but it's not easy because all the platforms are running.

see the attached screenshots.




your support is highly appreciated.

Thank you in advance.

2 Replies

  • Hello Marirh,
    I would recommend you to open a call with GSC, so they can help you troubleshoot your SIS Network, simply changing the configuration to Always use value may avoid a spurious trip (due to status), but if you do get loss of communication, you may create an unsecure situation.
  • In reply to Tadeu Batista:

    Hello Tadeau ;

    it's already created with GSC, i will try to give him the maximum information related to this issue because we have more than five SISNet Repeaters that gives errors : Crossed or SISNet broken. the big challenge is to ensure intervention to check the the fiber optic link without any trip ,while we have a lot of secure parameters exchanged between sites.

    Thank you for your reply.

    Best regards.