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AN #IN2
JC M011
L W#16#8
==I
JC M009
JU M010
M009: L W#16#0
T #STAT11
L #IO10
L 1
+I
T #IO10
BEU
M010: L #STAT11
L W#16#4
==I
AN #IN1
JC M007
JU M008
M007: L W#16#8
T #STAT11
M008: L #STAT11
L W#16#2
==I
A #IN1
JC M005
JU M006
M005: L W#16#4
T #STAT11
M006: L #STAT11
L W#16#1
==I
JC M004
JU M002
M004: L W#16#2
T #STAT11
M002: L #STAT11
L W#16#0
==I
AN #IN1
JC M001
JU M003
M001: L #IN3
T #OUT7
L #IO9
T #OUT8
L W#16#1
T #STAT11
M003: NOP 0
A DIX 13.1
= #OUT5
JU M012
M011: NOP 0
L #STAT11
L W#16#8
==I
JC M013
JU M018
M013: L W#16#0
T #STAT11
L #IO10
L 1
+I
T #IO10
BEU
M018: L #STAT11
L W#16#4
==I
AN #IN0
JC M014
JU M019
M014: L W#16#8
T #STAT11
M019: L #STAT11
L W#16#2
==I
A #IN0
JC M015
JU M020
M015: L #IN4
T #IO9
L W#16#4
T #STAT11
M020: L #STAT11
L W#16#1
==I
JC M016
JU M021
M016: L W#16#2
T #STAT11
M021: L #STAT11
L W#16#0
==I
AN #IN0
JC M017
JU M022
M017: L #IN3
T #OUT7
L W#16#1
T #STAT11
M022: NOP 0
A DIX 13.1
= #OUT6
M012: BE



被調用后生成的塊是這樣的





我想知道各端口的作用，這個程序是數據下載給飼服控制器的

西門子有本專門的手冊介紹FB的作用，名字是<S7-300400的系統軟件和標準功能>下載：
http://www.ad.siemens.com.cn/products/as/simaticplc/download/070625_151.pdf