Datamax v1.1x user manual Click Execute Click Options

Chapter 6 : Simulating Your Project

	The viewer also indicates the number of record(s) present in the file
	and the current pointer position in that file.
	Your program may alter the contents of these files programmatically.
	However, you cannot manually change the contents of the files via the
	File Viewer window in the Debugger.
Using the Break	In addition to the Interactive I/O break option that allows you to
options	simulate the success or failure of a given I/O action as described in
	Simulation Mode, Debugger Mode also allows you to set break points to
	stop project execution under additional conditions to:
	Perform step-by-step execution
	Stop automatically when the contents of any variable are modified
	Stop automatically when the contents of a specific variable are
	modified
	These break options can be useful, for example, to test negative paths
	in your project and verify the error routines you have created to handle
	these conditions.

To set one of these break points, on the MCL Screen Viewer menu bar,

1Click Execute

2Click Options

3Click the radio button beside the desired break option

If you choose Selected Variable(s) Update,

4Select one or more variables to trigger a break in project execution

A red dot beside a variable indicates any change in its contents during execution will cause a break in project execution.

In the MCL Variable Viewer window, red dots are also displayed beside the variables that will cause breaks.

October 2007 Page 179

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