Specifications

III PLC Devices
Special Relay/Register Signals
III - 109
6. Special Relay/Register Signals 6.1 Special Relay
Device abbrev. Signal name Device abbrev. Signal name
SM0 Diagnosis error SM10 SM1 Self-diagnosis error SM11 SM2 SM12 CARRY Carry flag SM3 SM13 SM4 SM14 SM5 SM15 SM6 SM16 THER Temperature rise SM7 SM17 SM8 SM18 SM9 SM19
Device abbrev. Signal name Device abbrev. Signal name
SM20 SM30 SM21 SM31 SM22 SM32 ON Always ON SM23 QSTOP PLC STOP SM33 OFF Always OFF SM24 SM34 BSCN Only 1 scan ON after RUN SM25 SM35 ASCN Only 1 scan OFF after RUN SM26 SM36 01CLK 0.1-second clock SM27 SM37 02CLK 0.2-second clock SM28 SM38 1CLK 1-second clock SM29 SM39 2CLK 2-second clock