Rockwell Automation 57C620 AutoMax Programming Executive Version 3.8 - Manual (Page 207)

18Ć19 On Line Menu: Monitoring and Editing Tasks
18.4 Monitoring and Editing PC Tasks
WARNING
USE OF THE ONLINE EDITING FEATURE CAN CAUSE THE CONTROLLED
PROCESS OR MACHINE TO SUDDENLY CHANGE ITS OPERATION. IT IS THE
RESPONSIBILITY OF THE USER TO DETERMINE THE POTENTIAL HAZARDS
INVOLVED. FAILURE TO OBSERVE THESE PRECAUTIONS COULD RESULT IN
BODILY INJURY.
Before you change any Ladder Logic task online, you should be
familiar with the information in 4.22.1, which describes variable types
and naming conventions in AutoMax Ladder Logic tasks.
The Monitor PC menu is used to monitor the state of Ladder Logic
task sequences in realĆtime and - unlike file editing - to modify
individual control logic sequences online while tasks are running.
To make any changes to Ladder Logic tasks, the keyswitch must be
in PROGRAM and the password must be entered.
Online editing operations supported include adding, deleting, and
modifying an existing sequence, modifying the value of a preset,
forcing/unforcing a variable, moving one or a set of sequences, and
resequencing all or part of a task. You can only modify one sequence
(edit one sequence, add one sequence, or delete one sequence) at a
time. Any online changes made take effect during the scan
immediately following the task scan during which the change is
installed.
When you monitor a sequence, the power flow is indicated by
reverse video display for those portions of the sequence that have
electrical continuity. If a sequence contains a timer or counter, the
current value is displayed, along with the preset value. For shift
registers, the current contents of the register are displayed. Variable
names displayed in lowerĆcase indicate local variables. Those
displayed in upperĆcase are common variables. See figure 18.6 for a
sample display.