Use the DeltaV Diagnostics application to troubleshoot CHARMs I/O. Diagnostic information is available for the I/O Network, CIOCs, and CHARMs as well as for the controllers to which CHARMs are assigned. The Diagnostics application can also be used to force a redundancy switchover between the active and standby CIOC. Use the context menu commands from the Redundancy subsystem in Diagnostics to force redundant CIOCs to switch over. Use the Diagnostics online help for descriptions of the diagnostic parameters which provide useful information for maintaining system integrity.
The LEDs on CIOCs and CHARMs provide useful diagnostic information about the hardware. Refer to the DeltaV S-series and CHARMs Hardware Reference manual for a description of the CHARM I/O LEDs.