Set parameter signature request
Overview
If a Parameter Change command verification policy is configured in the area model and
associated with a signature template, then a
Set Parameter
Signature
request is generated when a user attempts to change a
recipe parameter value or a formula parameter value.Modifications made to support FactoryTalk Batch electronic signatures
The following is an explanation of the modifications made to support
FactoryTalk® Batch
electronic signatures:SetParm Execute | |
|---|---|
Batch Server | If the target is a recipe phase parameter, the FactoryTalk Batch Server checks the area model to
determine if a Signature Request is required for SetParm Execute
confirmation. If yes, then a Signature Request is generated. The
server also checks for deviations on the recipe phase parameter.
If the SetParm Execute target is a formula parameter, then the
server checks all recipe phase parameters that reference the
formula parameter. If deviations are detected, then the
appropriate Signature Request(s) are generated. If one or more
signatures are generated, then storing the specified value to
the parameter is deferred until all Signature Requests are
complete. |
Response | An ActionID is returned by the execute that is used to locate the
generated signature(s). |
Completion | When all generated Signature Requests associated with the SetParm
Execute are complete, then the value passed in the SetParm
Execute Action is stored into the specific parameter. |
Cancellation | When any incomplete Signature associated with the SetParm Execute
is cancelled, then the entire SetParm Execute Action is
terminated and all Signature Requests associated with the same
SetParm Execute Action are System Cancelled. |
Overlap | If a SetParm Execute is received targeting a parameter that has
incomplete Signature Requests for a prior SetParm Execute
Action, then the new SetParm Execute fails. The failed Execute’s
response item has an appropriate error message. The specified
value is not stored in the specified parameter. |
Automatic Cancellation | If any incomplete Signature Requests associated with a SetParm
Execute is user cancelled, then the Execute Action is terminated
and its remaining incomplete Signature Requests are System
Cancelled. |
Warm Restart, Warm All Restart, or Hot Restart | Signature Requests generated in response to a SetParm Execute
Action are restored in the event of a FactoryTalk Batch Server Warm Restart, Warm All Restart, or Hot Restart. |
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