When you force a value, all input from the system is overridden. For example, a schedule is set to start a fan at 09:00 but you want it to start at 08:00. In this case, you can force the fan to start at 08:00.
You can manually release a forced value at any time or you can automate the release, using a Timed Force utility object to specify the duration or end time of the force.
For more information, see Timed Force Objects
.
When you release a forced value, the value returns to its normal status.
In WorkStation, you can view the unforced value, which is the real value from the system, at any time.
For more information, see Viewing an Unforced Value
.
Indication in WorkStation
A forced value is indicated by orange color in the properties dialog boxes. In in the Watch pane, a forced value is indicated by a pointing hand
action_zoom_plus_stroke
.
In the List View and Search View, a forced value is indicated by the text [Forced] in the 'Value' column.
In WorkStation, you can view the unforced value, which is the real value from the system, at any time.
For more information, see Viewing an Unforced Value
.
Indication in WebStation
A forced value is indicated by orange color and a pointing hand in the List view.
Indication in Function Block Graphics Viewer
A forced value is indicated by orange color in Function Block Graphics Viewer.
For more information, see Forced Value Indication in Function Block Graphics Viewer
.