Rockwell Automation 57C650 AutoMax Programming Executive Version 3.8 - Manual (Page 217)

18Ć29 On Line Menu: Monitoring and Editing Tasks
18.5 Forcing Variables
WARNING
THE SET AND FORCE FUNCTIONS BYPASS CONTROL OF THE APPLICATION
PROCESS BY THE APPLICATION TASKS. IT IS THE RESPONSIBILITY OF THE
USER TO DETERMINE THE POTENTIAL HAZARDS INVOLVED. FAILURE TO
OBSERVE THESE PRECAUTIONS COULD RESULT IN BODILY INJURY.
WARNING
VARIABLES AND OUTPUTS WHICH ARE FORCED BEFORE AC POWER IS LOST
WILL REMAIN FORCED WHEN AC POWER IS RESTORED. SHOULD AC POWER
BE LOST WHILE VARIABLES ARE FORCED, THE USER MUST ENSURE THAT
UNEXPECTED MACHINE MOVEMENT DOES NOT OCCUR WHEN AC POWER IS
RESTORED. FAILURE TO OBSERVE THESE PRECAUTIONS COULD RESULT IN
BODILY INJURY.
From the Monitor menu shown in figure 18.1, you can select F" for
Force to force and unforce up to 16 variables at the same time. Note
that the limit of 16 forced variables applies regardless of the number
of users who have access to the tack. You can only force boolean,
single precision integer, double precision integer, and real variables.
Strings, array elements, and tunable variables cannot not be forced.
A variable that is forced cannot be altered by any application task or
the status of physical I/O. A forced variable will retain its forced value
until it is unforced or forced to a different value.
See 18.5.1 for an explanation of the screen display and 18.5.2 and
18.5.3 for instructions on forcing and unforcing variables.
18.5.1 Monitor Force Screen Display
Forced variables are displayed in a table on the screen. The columns
in the force table contain the following information:
(#) Ć Force table (screen) position (1Ć16).
Task Ć The task in which the variable is defined. This field
is blank if the variable is COMMON.
Variable Ć Name of the variable being forced, including the
type character.
Value Ć The current forced value of the variable.
See figure 18.7 for a the Monitor Force menu.