Epson RC170 Guia do Utilizador descarregar pdf (Página 218)

7. Building SPEL+ Applications

Stepping through a program

There are three commands on the Run Menu that are used for stepping through code.

Step Into steps through each line and also steps into functions when a step is executed on a

Call statement.

Step Over steps through each line but when a Call statement is encountered, the function

in the statement is executed completely.

Walk executes lines until after the next motion command and then halts the task. It will

halt after the next output command if the Setup | Controller | Preferences Walk stops for

outputs checkbox is checked.

To step through code, you must either set a breakpoint and run until the breakpoint is

reached, or suspend a task from the Task Manager using the Halt button.

Viewing the Call Stack

Sometimes you may want to examine the call stack for the current task after you halt the

task from the task manager, or reach a break point.

To view the call stack, select Call Stack from the Run Menu. The Call Stack list will be

displayed, as shown below.

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Epson RC170 Guia do Utilizador Página 218