OptoOPCServer returns erratic tag quality if OPC client refers to data item incorrectly

Applies To:

OptoOPCServer

Versions Affected:

Problem was found in version: R7.0a
Problem is fixed in version: R8.0c

Resolved In Version:

Problem is fixed in version: R8.0c

Symptoms:

If a custom OPC client or PAC Display client accesses data from a control engine and the data item does not exist in the control strategy, or the OPC client references a data item name incorrectly, then OptoOPCServer does not handle the information returned by the control engine properly. This could include, but is not limited to requesting a tag that no longer exists, or a table index that is out of range.

As a result, erratic tag quality changes occur in OptoOPCServer.

Resolution:

Opto 22 has resolved this issue.

Questions?

Contact: Opto 22 Product Support.
Phone: 800-835-6786 or 951-695-3080
Email: support@opto22.com

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