报警DB2的相应位应该也是置1了,刚刚 我搞懂是怎么一回事,老外这PLC是这么做的:
NETwork 2: ALARM BITS TRANSFER FROM DB150[DBB0..79] TO DB2[DBB180..259]
L #NrMaxByteAllarme //一常数,需要对应的DBB个数,为80.
T "WordAux_20" //MW 20
LAR1 P#0.0
L004: OPN "AL" //DB150
L DBD [AR1,P#0.0]
OPN "MELD" //DB2
T DBD [AR1,P#180.0]
+AR1 P#4.0
L "WordAux_20"
L 4
-D
T "WordAux_20"
L 0
>D
JC L004

鬼子这么做纯粹是增加 阅读 难度???

谢谢斑竹
谢谢关注