4.2 CPU Module Specifications4.2.7 System Register Specifications4-174 Specifications System StatusThe data in these registers give the operating status of the system or provide information abouterrors. You can check the following system registers to determine whether the cause of theerror is hardware or software related. The System Status Registers are reset to zero when thesystem is started.Name Register Address ContentsReserved forsystem. SW00030 to SW00039 −CPU Status SW00040SB000400 READY 0: Error, 1: ReadySB000401 RUN 0: Stopped, 1: RunningSB000402 ALARM 0: Normal, 1: AlarmSB000403 ERROR 0: Normal, 1: ErrorSB000404 Reserved for system. −SB000405 M-ALM 0: Normal, 1: Axis alarmSB000406 FLASH 0: INIT Start, 1: Flash OperationSB000407 WEN 0: Writing disabled,1: Writing enabledSB000408,SB000409 Reserved for system. −SB00040A Flash Save Requestfrom MPE7200: Not saving data to flash mem-ory1: Saving data to flash memorySB00040BStatus of Synchroni-zation with Main CPUModule (Sub CPUModules only)0: High-speed scans synchro-nized1: High-speed scans not syn-chronizedSB00040C CPU Module Mode 0: Main CPU Module,1: Sub CPU ModuleSB00040DStop OperationRequest from MainCPU Module (SubCPU Modules only)0: RUN selected,1: STOP selectedSB00040EOperation StopRequest fromMPE7200: RUN selected,1: STOP selectedSB00040F Run Switch Status atPower ON 0: STOP, 1: RUNCPU ErrorStatus SW00041SB000410 Serious Failure 0: Normal, 1: Serious failureSB000411,SB000412 Reserved for system. −SB000413 Exception Error 0: Normal, 1: Exception errorSB000414 toSB000417 Reserved for system. −SB000418 User Operation Error 0: Normal,1: User operation errorSB000419 I/O Error 0: Normal, 1: I/O errorSB00041A MPU-01 Error 0: Normal, 1: MPU-01 errorSB00041B Reserved for system. −SB00041C Reserved for system. −SB00041D M-III RestrictionsError0: Normal,1: Restrictions error in MECHA-TROLINK-III communicationscycleSB00041E Reserved for system. −SB00041F Temperature Warning 0: Normal,1: Temperature warningContinued on next page.