Rockwell Automation GMLC Reference Manual - Manual (Page 876)

Publication GMLC-5.2 - November 1999
Monitoring Program Flow 839
1. If your diagram has not been downloaded, from the Diagram menu,
select Download Diagram. The program is sent to the controller.
2. Select Trace. The program runs at full speed and periodically high-
lights blocks in the Diagram Window as they are executed.
Important: In Normal mode, the Diagram in the workspace must match
the program resident in the controller.
Terminating Trace Mode
Using Auto Step
Auto Step shows program flow at slower than normal program speed.
When execution of each block is complete, the next block in the program
flow is highlighted. This continues until the program terminates.
To automatically step through each program block:
1. From the menu bar, select Diagram. The Diagram menu appears.
2. Select Auto Step. Commands appear in the Terminal Window.
Using Single Step
Single Step shows program flow at the slowest speed. When execution of
a block is complete, the next block in the program flow is highlighted. At
this point, to continue, you must select Single Step again.
To step through program blocks one at a time:
1. From the menu bar, select Diagram. The Diagram menu appears.
2. Select Single Step. Commands appear in the Terminal Window.
To terminate trace mode: Select:
Without aborting the program Go while it is tracing.
And abort program execution Stop.