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You can use an I/O variable probe to force I/O variable values. Forcing an I/O variable causes the input or output and all associated aliases of the variable to assume the forced value until you unforce the value. If an input from hardware returns an error, and the associated I/O variable is forced, System Manager does not display the error. However, if the error results in a fault, LabVIEW registers the fault. If an output returns an error, System Manager displays the error.
|Note If you link several I/O variables in a chain of aliases and force one of the I/O variables in the chain, the forced value applies to all I/O variables in the chain.|
Complete the following steps to enable and disable I/O variable forcing on a target with the NI Scan Engine installed.
|Note If you disable forcing and then enable forcing again, all previously-forced I/O variables return to their last forced value, unless you have cleared those values using the Clear Forcing button.|
Complete the following steps to force and unforce I/O variable values.
|Note Individual I/O variable forcing applies only if forcing is enabled on the target. Use the Enable Forcing and Disable Forcing buttons to enable and disable forcing on the target.|
Complete the following steps to perform batch forcing on a set of I/O variables.