发布于 2011-08-24 08:36:00
4楼
PLC1的IB0控制PLC3的QB0,PLC2的IB0控制PLC3的QB1
PLC1:
LDSM0.1
MOVB9,SMB30
MOVB1,VB100
LDSM4.5
MOVBIB0,VB101
XMTVB100,0
PLC2:
LDSM0.1
MOVB9,SMB30
MOVB1,VB100
LDSM4.5
MOVBIB0,VB101
XMTVB100,0
PLC3:
LDSM0.1
MOVB9,SMB30
ATCHINT_0:INT0,8
ATCHINT_1:INT1,25ENI
INT_0:
LDSM0.0
MOVBSMB2,QB0
INT_1:
LDSM0.0
MOVBSMB2,QB1
不过还是建议用RCV,用SMB2,那么中断太多。