SattLine OPC Server ADS Client setting <synchronous_timeout>
We have a SattLine OPC Server and client on the same Workstation.
When de workstation is Backuped Once a week the network connection is lost for x Seconds.
My error in Windows Event.
I Think the setting <synchronous_timeout> is a solution for my problem.
But what does it do?
is it a timeout for restarting, So when error Wait 20000 milliseconds then restart.
then i can set it shorter.
is it a 20000 milliseconds timeout before getting an error and restart.
In this case I can set the timeout longer and no restart will occur.
Voted best answer
With help of the SattLine OPC-developer I got an answer for you I hope will help you.
The SYNCHRONOUS_TIMEOUT is an option that allow synchronous OPC client requests to timeout.
The OPC specification contain client to server requests which are synchronous. As such requests can be across the network, the SL-OPC has an option for these requests to timeout. The SYNCHRONOUS_TIMEOUT controls this option. Either specify the number of milliseconds a synchronous OPC request may take before returning a timeout error or specify minus one (-1) for no timeout.
The error in the eventlog (COM-Alive timeout …) is an indication that the SL-OPC server has lost the connection to the SL-OPC data client. This timeout can also be controlled, though only for all data clients. It is an option on the spCOM task “-AliveTimeout <n>“, where n is the number of seconds communication must be lost before spCOM disconnects the SL-OPC data client. The default is 60 seconds, which is also the minimum time that can be specified.
The default spCOM command line is: -server localhost -usereversedns 0
To double the SL-OPC data client connection timeout: -server localhost -usereversedns 0 -AliveTimeout 120
Use the APSmanager.exe (C:\Program Files\ABB\ABB Program Supervision\Bin) to change this (or edit the registry [HKEY_LOCAL_MACHINE\SOFTWARE\ABB\APS\System\ADSspCOM]).
SL-OPC clients will automatically re-connect to SL_OPC when the network connection is reestablished.
While the connection is lost, SL_OPC data client will report OPC items with a bad quality."'
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