WriteFeedbackMode

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WriteFeedbackMode

Enum This property allows controlling a confirmation or feedback of Tag writings. The configuration options for this property are described on the next table.

Available options for the WriteFeedbackMode property

Option

Description

0 - wfWaitNextRead

After writing, waits normally for the next reading

1 - wfImmediateReadAfterWrite

Forces an asynchronous reading of a device right after each writing (default)

2 - wfTrustWriteSuccess

The written value is immediately assumed by the Tag, if the writing was successful

 

NOTES

OPC UA Driver's WriteFeedbackMode property cannot be changed with the object still active.

In option 2 - wfTrustWriteSuccess, for asynchronous writings, the value is assumed in the Tag after scheduling a writing, if the operation is successful. However, if that writing fails later, the Tag's value may be wrong. For synchronous writings, the value is assumed right after the writing finishes, if successful.

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