MTS Multipurpose Elite - Manual (Page 427)

Set Span and Setpoint Activity Properties
Description Property
Prevents the actuator from moving while adjusting
the span and setpoint values. Use this feature to
safely return to zero force. Maintain
command to
prevent
movement
Important:
Do not place the Set Span and Setpoint
activity with the Maintain command enabled
in a parallel path with another command
activity, since doing so results in a runtime
error.
Selecting the Maintain command check box disables
the Monitor property.
Default: Disabled.
Monitors span and setpoint either once or continually.
The Monitor property is not available if the Maintain Monitor
command to prevent movement check box is
selected.
Available Monitor options are:
• One Time—Sets the span and setpoint values in
the controller once and closes.
• Continuous—Provides continuous monitoring
and updating of the span and setpoint values.
Place the Set Span and Setpoint activity in
parallel with the activity that periodically modifies
the assigned variables. When using the
Continuous Monitor option, the Set Span and
Setpoint activity does not close on its own.
Therefore, indicate another activity within the
parallel branch as the terminal path.
Note:
If you are using the Continuous Monitor
option, you must define Span and Setpoint
as variables.
The channel selected for the activity. Channel
The currently selected sensor or sensors that are
functioning as the closed-loop control for the channel. Control Mode
Note:
When the activity begins, if the selected control
mode is not the active control mode, a warning
MTS TestSuite | 427
Test Activities