Kepware - Timeout when trying to add subscription for device.

[PG_10718760]

Hello all.

I have the following setup

MES OPC DA <-> MES Kepware UA server <->  DeltaV Kepware UA server <-> DeltaV OPC DA

Been getting the following messages on 

1. MES Kepware UA server: OPC UA client | Failed to add subscription for device. | Status = 'Timeout trying to perform the operation.'

2. DeltaV Kepware UA server: OPC DA client | Read request timeout on device.

Been causing the MES OPC DA to fail opc read/write operations randomly.

Anyone has encountered these before and can provide advice on how to troubleshoot or resolve this?

[AKshara · Accepted solution]

Hi,

Appreciate your post with us.
Your current setup involves multiple layers, specifically connecting MES OPC DA to the MES Kepware UA server, DeltaV Kepware UA server, and eventually to the DeltaV OPC DA server. The timeout errors you are experiencing at both the MES and DeltaV levels warrant a systematic troubleshooting approach to identify and resolve the root causes.
To begin with, I suggest increasing the Connection Timeout(s) under UA session to 30 since the Connection request timeout is configurable between 1~30 seconds.

If the issue doesn't go away by increasing the timeout session, I suggest logging a case with us and sharing the Wireshark capture and Application report.

-Akshara

[vnamboodheri]

Hello @PG_10718760, 

It looks like you have a response on your topic. If it helped to answer your question please mark the reply as the Accepted Solution. 

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Thanks,
Vivek N.
Community Moderation Team.