MAN0878-09-EN_XLE_XLT_UserManual
A u g u s t 2 3 , 2 0 1 8 P a g e 151 | 158
20.2 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 UP and DOWN arrow keys simultaneously. See Chapter 9
for full details on the System Menu diagnostic capabilities.
20.2.1 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.
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