MTS Series 793 Application - Manual (Page 215)

External Command Process
MTS MultiPurpose TestWare® Command Processes 215
About Overriding System Setpoint and Span
With the External Command process, you can temporarily override the default
system span and setpoint values, even if you select Disable and Reset for the
Span and Setpoint controls on the Execution tab of the MPT Options Editor.
To do this, enable the Change Setpoints and/or Change Spans check boxes in
the Scaling tab of the External Command Parameters window, and type span and
setpoint values in the associated entry boxes. This causes the span and setpoint
values you type to overwrite system span and setpoint values when MPT
executes the External Command process.
The precise way MPT performs the override depends on whether you select
Disable and Reset or Enable:
• If you select Disable and Reset, the controller will set span at 100% and
setpoint at zero as it plays out the procedure until it begins to play out the
External Command process. At that point the controller switches to the
External Command process setpoint and span values. When the process is
done, the setpoint reverts to zero, and the span reverts to 100% for the
remainder of the procedure. With this selection, you cannot make
adjustments to the Setpoint and Span sliders while the test is running.
• If you select Enable, the controller will use the system setpoint and span
values as it plays out the procedure until it begins to play out the External
Command process. At that point, the controller switches to the External
Command process setpoint and span values and uses them for the remainder
of the procedure. With this selection, you can make adjustments to the
Setpoint and Span sliders while the procedure is running.