The Editors • 175

The Text Editors

At every RET, RETC, RETCN

At the end of the POU

Structured Text accommodates the following breakpoint positions:

At every assignment

At every RETURN and EXIT instruction

in lines where conditions are being evaluated (WHILE, IF, REPEAT)

At the end of the POU

Breakpoint positions are marked by the display of the line number field in the color which is set in the project options.

x IL Editor with Possible Breakpoint Positions (darker number fields)

5.3.1.9 How do you set a breakpoint?

In order to set a breakpoint, click the line number field of the line where you want to set a breakpoint. If the selected field is a breakpoint position, then the color of the line numbers field will change from dark gray to light blue, and the breakpoint will be activated in the PLC.

5.3.1.10Deleting Breakpoints

Correspondingly, in order to delete a breakpoint, click on the line number field of the line with the breakpoint to be deleted.

Setting and deleting of breakpoints can also be selected via the menu ('Online' 'Toggle Breakpoint'), via the function key <F9>, or via the symbol in the tool bar.

5.3.1.11What happens at a breakpoint?

If a breakpoint is reached in the PLC, then the screen will display the break with the corresponding line. The line number field of the line where the PLC is positioned will appear in red. The user program is stopped in the PLC.

WAGO-I/O-SYSTEM 759 WAGO-I/O-PRO 32