Rockwell Automation 47C626 AutoMax Programming Executive V4.2 - Manual (Page 205)

18Ć19
18.4 Monitoring and Editing PC Tasks
The Monitor PC Program command is used to access the AutoMax
Ladder Editor which is used to monitor Ladder programs. This
command appears under the System Configurator Online menu and
the Task Manager Online menu. You cannot access the Ladder Editor
while online. If you attempt to access the AutoMax Ladder Editor from
the Online Task Manager by selecting PC from the Monitor menu
screen, you will receive the following message: Monitor PC Task via
the System Configurator or Task Manager." You must exit the Online
Task Manager and access the AutoMax Ladder Editor by using the
Monitor PC Program command. Refer to J2Ć3093 for information on
using the AutoMax Ladder Editor to monitor and edit PC tasks online.
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 64 variables at the same time. Note
that the limit of 64 forced variables applies regardless of the number
of users who have access to the rack. 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
The forcing table for a rack is divided into four pages. Each page can
list up to 16 variables, numbered 1 to 16. Pages can be switched by
using to display the next page in the table and
to display the previous page in the table. The page
numbers will scroll, meaning that, if you press from
page 4 of the table, page 1 will be displayed. If you press
from page 1 of the table, page 4 will be displayed.