58 Publication 1756-PM004C-EN-P - October 2009
Chapter 3 Force I/O
FORCE Status Indicator
If your controller has a FORCE Status Indicator, use it to determine the status
of any I/O forces.
GSV Instruction
This example shows how to use a GSV instruction to get the status of forces.
where:
Force_Status is a DINT tag.
The FORCE Status Indicator shows only the status of I/O forces.
It does not show that status of SFC forces.
FORCE Status Indicator Then
Off • No tags contain force values.
• I/O forces are inactive (disabled).
Flashing • At least one tag contains a force value.
• I/O forces are inactive (disabled).
Solid • I/O forces are active (enabled).
• Force values may or may not exist.
The ForceStatus attribute shows only the status of I/O forces. It
does not show the status of SFC forces.
To determine if Examine this bit For this value
Forces are installed 0 1
No forces are installed 0 0
Forces are enabled 1 1
Forces are disabled 1 0
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