Local Controller And Local I/O - HORNER APG EXL10 OCS User Manual

23.2 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.
23.2.1 Local I/O Troubleshooting Checklist
1. Verify the controller is in RUN mode.
2. Check diagnostics to ensure controller passed self-tests.
View Diags in 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.
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