3.2 Function Modules3.2.10 Maintenance Monitoring3-1013 CPU Module Functionality Error CodesIf reading the monitor data cannot be completed normally, one of the following error codes isdisplayed in the system registers that normally contain the circuit number and axis number. Monitoring MethodsYou can use the following methods to monitor the data stored in the system registers.• Ladder ProgrammingRefer to the following manual for operating details.MPE720 Version 7 User’s Manual (Manual No.: SIEP C880761 03)• TracingRefer to the following manual for operating details.MPE720 Version 7 User’s Manual (Manual No.: SIEP C880761 03)• Data LoggingRefer to the following section for operating details.3.2.5 Data Logging on page 3-66SW + 48Axis 12Circuit numberSame as above.SW + 49 Axis numberSL + 50 Monitor valueSW + 52Axis 13Circuit numberSame as above.SW + 53 Axis numberSL + 54 Monitor valueSW + 56Axis 14Circuit numberSame as above.SW + 57 Axis numberSL + 58 Monitor valueSW + 60Axis 15Circuit numberSame as above.SW + 61 Axis numberSL + 62 Monitor valueSW + 64Axis 16Circuit numberSame as above.SW + 65 Axis numberSL + 66 Monitor valueSystem Registers ErrorCircuit Number Axis Number80 hex 18 hex Relay error: An error occurred in message communications with theSERVOPACK.80 hex 22 hex Timeout error: A response was not received from the SERVOPACKwithin 5 seconds.You can also use a touch panel to monitor the stored data.Continued from previous page.System Register Item RemarksInformation