Chapter 9. Diagnostics424 PACSystems* RX7i, RX3i and RSTi-EP CPU Programmer's Reference Manual GFK-2950C9.5 I/O Fault Descriptions and Corrective ActionsThe I/O fault table reports the following data about faults:▪ Fault Group▪ Fault Action▪ Fault category▪ Fault type▪ Fault descriptionAll faults have a fault category, but a fault type and fault group may not be listed for every fault. Toview the detailed information pertaining to a fault, click the fault entry in the I/O Fault Table.Note: The model number mismatch and I/O type mismatch faults are reported in the controllerfault table under the System Configuration Mismatch group. They are not reported in the I/Ofault table.9.5.1 Fault Extra DataAn I/O fault table entry contains up to 21 bytes of I/O fault extra data that contains additionalinformation related to the fault. Not all entries contain I/O fault extra data.9.5.2 I/O Fault GroupsGroup Number Group Name Default Fault Action16 Configurable2 Loss of or Missing IOC Diagnostic Yes3 Loss of or Missing I/O module or networkDevice Diagnostic Yes6 Addition or Reset of, or Extra IOC N/A No7 Addition of or Extra I/O module or networkDevice N/A No9 IOC or I/O Bus Fault Diagnostic Yes10 I/O Module Fault N/A No15 IOC Software Failure Same As Group 2 19 Yes16 Module Software Failure N/A No28 PROFINET Alarms Diagnostic No133 Genius Block Address Mismatch N/A No19 The fault action for the IOC Software Failure group 15 always matches the action used by the Loss of or Missing IOCgroup 2. If the Loss of or Missing IOC group is configured, the IOC Software Failure group is also configured to take thesame fault action.