S7 Software Redudance

ssantiago · Oct 18, 2011

Hello. I got a problem with software redudanncy. I were trying to connect two redudant 317-2DP PLC to IM153-2 via Profibus, as a redudant link I used Ethernet. And got an I/O error. And couldn't find where it appeared. Here my code (and hardware in attachment):
OB100:

Code:

      CALL  "SWR_START"
       AG_KENNUNG      :='A'
       DB_WORK_NO      :=DB1
       DB_SEND_NO      :=DB2
       DB_RCV_NO       :=DB3
       MPI_ADR         :=2
       LADDR           :=200
       VERB_ID         :=12
       DP_MASTER_SYS_ID:=1
       DB_COM_NO       :=DB5
       DP_KOMMUN       :=1
       ADR_MODUS       :=1
       PAA_FIRST       :=1
       PAA_LAST        :=0
       MB_NO           :=0
       MB_LEN          :=0
       IEC_NO          :=0
       IEC_LEN         :=0
       DB_NO           :=0
       DB_NO_LEN       :=0
       SLAVE_NO        :=3
       SLAVE_LEN       :=1
       SLAVE_DISTANCE  :=1
       DB_A_B_NO       :=DB255
       DB_A_B_NO_LEN   :=W#16#0
       DB_B_A_NO       :=DB255
       DB_B_A_NO_LEN   :=W#16#0
       RETURN_VAL      :="netRes".res
       EXT_INFO        :="netRes".ext

OB 35:

Code:

CALL  "SWR_ZYK" , DB5
       DB_WORK_NO   :=DB1
       CALL_POSITION:=TRUE
       RETURN_VAL   :="netRes".resBefore
       EXT_INFO     :="netRes".extBefore

      CALL  "BLKMOV"
       SRCBLK :=P#I 0.0 BYTE 1
       RET_VAL:=MW200
       DSTBLK :=P#M 100.0 BYTE 1


      CALL  "SWR_ZYK" , DB5
       DB_WORK_NO   :=DB1
       CALL_POSITION:=FALSE
       RETURN_VAL   :="netRes".resAfter
       EXT_INFO     :="netRes".extAfter

S7 Software Redudance

ssantiago

Member

Similar Topics