MAN1106-07-EN_XL+_UserManual
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22.2 Local Controller and Local I/O
The System Menu provides the following status indications that are useful for troubleshooting
and system maintenance.
-
Self-test results, diagnostics
-
RUN and OK status
-
Network status and usage
-
Average logic scan rate
-
Application memory usage
-
Loaded firmware versions
-
Loaded protocols
-
Removable Media access
To view the System Menu, press the System key.
22.2.1 Local I/O Troubleshooting Checklist
1.
Verify the controller is in RUN mode.
2.
Check diagnostics to ensure controller passed self-tests.
Press View Diags in the System Menu or in Cscape, click Controller
→
Diagnostics
3.
Check data sheets to ensure proper wiring.
4.
Ensure that hardware jumpers and software configuration for I/O match.
5.
Check data sheets for voltage and current limits.
6.
Take ladder out of the picture. From Cscape
set controller to “Do I/O” mode.
In this
mode inputs can be monitored and outputs set from a data watch window in Cscape
without interference from the ladder program. Some I/O problems are only a result of a
mistake in the ladder program.
WARNING: Setting outputs ON in Do I/O mode can result in injury or cause machinery to
engage in an unsafe manner depending on the application and the environment.
