Rockwell Automation AADvance Controller Demo Unit - Manual (Page 98)

Demo Unit User Manual (AADvance Controller)
5-32 Document: 553850 Issue 1.2: March 2011
The 9451 Variables Editor dialog box opens.
2) Select the relevant rack.
The editor displays a list of associated variables.
3) Select the variable to be unwired, click the X button.
4) Click Apply.
The variable will be unwired.
Note: Select the Unwire All button and click Apply to disconnect all of the wired
variables in the rack.
Status Booleans
The variables in the rack of status booleans provide information to the application
about the field power supplies to a group of digital output modules.
Group Field Power Health
Direction: input to application from controller
Type: boolean
Values:
TRUE = all field power supplies for all active digital output modules in the group
are within the range 18V to 32V dc inclusive
FALSE = one or more field power supplies to an active module is less than 18V dc
or greater than 32V dc.
Description:
Provides a top level indication of the health of field power supplies to active digital
output modules.
Note: The controller incorporates a 0.5V hysteresis on these thresholds to prevent
chatter. The controller will declare a fault when a supply falls below 18V, but will not
clear the fault until the supply rises to 18.5V. Similarly the controller will declare a fault
when a supply exceeds 32V, but will not clear the fault until the supply falls below
31.5V.