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model 2000 DeviceNet Module Manual (DN611/DN611A)
Appendix D Definitions of the Function Block for Slave Data Input/Output
D
  S3: BOOL; (*S3 selection*)
  S2: BOOL;  (*S2 selection*)
  STEP: ARRAY [0...4] OF BOOL; (*Step*)
  DEF1: BOOL; (*Differential contact*)
  DUMMY_11: BOOL; (*Dummy*)
  DUMMY_12: BOOL; (*Dummy*)
  DUMMY_R1: BOOL; (*Dummy*)
  ADR_RED1: WORD; (*Extension memory address*)
  DAT_RED1: ARRAY[0...9] OF UINT; (*Transfer destination variable*)
  TMP1: ARRAY[0...5] OF UINT; (*Address calculation data*)
  TMP2: ARRAY[0...11] OF UINT; (*Address calculation data*)
  TMP3: ARRAY[0...5] OF UINT; (*Address calculation data*)
  TMP4: UINT; (*Address calculation data*)
  NEXT: BOOL; (*Next step*)
  NEXT2: BOOL; (*Next step*)
  TMR1: TON_100ms; (*Error detection timer*)
  TIME1: DINT; (*Error detection time*)
  DUMMY_R2: BOOL; (*Dummy)
  ADR_RED2: WORD; (*Extension memory address*)
  DAT_RED2: WORD; (*Transfer destination variable*)
  NUM_RED2: UINT; (Words to transfer*)
END_VAR