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11.4 Displaying status of the user program is easy
Easy Book
260 Manual, 03/2014, A5E02486774-AF
11.4
Displaying status of the user program is easy
You can monitor the status of the tags in the LAD and FBD program editors. Use the editor
bar to display the LAD editor. The editor bar allows you to change the view between the
open editors without having to open or close the editors.
In the toolbar of the program editor, click the "Monitoring on/off" button to display the status
of your user program.
The network in the program editor displays power flow in green.
You can also right-click on the instruction or parameter to modify the value for the instruction.
11.5
Using a watch table for monitoring the CPU
A watch table allows you to monitor or modify data points while the CPU executes your user
program. These data points can be inputs (I), outputs (Q), M memory, a DB, or peripheral
inputs (such as "On:P" or "I 3.4:P"). You cannot accurately monitor the physical outputs
(such as Q0.0:P) because the monitor function can only display the last value written from Q
memory and does not read the actual value from the physical outputs.
The monitoring function does not change the program sequence. It presents you with
information about the program sequence and the data of the program in the CPU. You can
also use the "Modify value" function to test the execution of your user program.
Note
The digital I/O points used by the high
-speed counter (HSC), pulse-
width modulation (PWM),
and pulse
-train output (PTO) devices are assigned during device configuration. When digital
I/O point addresses are assigned to these devices, the value
s of the assigned I/O point
addresses cannot be modified by the "Force" function of the watch table.
With a watch table, you can monitor or modify the values of the individual tags, choosing
from the following options:
● At the beginning or the end of the scan cycle
● When the CPU changes to STOP mode
● "Permanently" (with the value not being reset after a STOP to RUN transition)