Safety Considerations Guide, Tricon v9.0 - Tuv-fs.com

TR_CRITICAL_IO Function Block 974 Read the output values:– CO– TMR– GE_DUAL– GE_SINGLE– NO_VOTER_FAULTSThe output values are an accumulation of the status of all critical I/O modules.For example, the output called TMR is true if all of the critical modules in thesystem are in TMR mode.InputsParameter Type DescriptionCI BOOL Control In—enablesoperationINIT BOOL InitializeCHASSIS DINT Chassis number (1–15)SLOT DINT Physical slot number mustbe odd (1, 3...15)APP DINT Application number (1–2)RELAY_OK BOOL Relay is energized and notstuckOutputs CO BOOL Critical I/O Control OutTMR BOOL Three channels areoperating without faults onevery critical I/O moduleGE_DUAL BOOL At least two channels areoperating without faults onevery critical I/O moduleGE_SINGLE BOOL At least one channel isoperating without faults onevery critical I/O moduleNO_VOTER_FLTS BOOL No voter faults on criticalI/O modulesAppendix BShutdown Function Blocks