Technical FAQs

Ask a Question

Why do I get "Data Not Yet Valid" error in the kernel when using OPC Driver.

You need to set the INI parameter [OPC]FailOnBadData = 0
 
The OPC parameter FailOnBadData does the following:

When FailOnBadData=1 (default)
If there is a bad tag, all tags within the optimised block will be displayed as #COM.

When FailOnBadData=0 (non-default)

If there is a bad tag, all tags within the optimised block will be displayed correctly except for the bad tag which will be displayed as 0.

Additionally, if a Citect tag is configured to refer to an address that does not exist in the OPC Server and FailOnBadData is set to 0, the
error will be suppressed.Citect recommends ensuring that your tag addressing is correct and in particular that the address specified
as the address of the tag in Citect actually exists in the OPC Server.
 
Was this helpful?
What can we do to improve the information ?