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8 Checking Operation and Actual Operation
NX-series Safety Control Unit User’s Manual (Z930)
8-6 Functions for Checking Operation
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8-6-3 Monitoring Variables in the FBD Editor
This section describes the procedures to monitor the present values of variables in the FBD editor to
debug the safety programs.
You can monitor the present values of variables in the FBD editor. Use the following procedure.
Double-click the required program under Programming − Programs in the Multiview Explorer.
The operating status of the selected POU is displayed in the FBD editor.
• The value of the variable is displayed in the frame on the right side of the variable name.
“FALSE” is displayed with a black background, and “TRUE” is displayed with a blue background.
Numeric values are displayed as decimal numbers. Use the Watch Tab Page to check numerical val-
ues as binary or hexadecimal numbers.
• You cannot monitor connecting lines between variables and FBs.
This section describes the procedures to monitor the present values of variables in a Watch Tab Page
to debug the safety programs.
You can check the present value of one or more variables in the Watch Tab Page.
Select Watch Tab Page from the View Menu.
The Watch Tab Page is displayed.
8-6-3 Monitoring Variables in the FBD Editor
Executing the Operation Monitor for the Safety Programs
8-6-4 Monitoring Variables in a Watch Tab Page
Monitoring in a Watch Tab Page
Displaying a Watch Tab Page
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