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基于PLC的十字路口交通灯控制系统设计论文 - 百度文库

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1-2

ͼʾ Ԫ LDȡ LDIȡ OUT

ĸ մĸ Ȧ XYMTC,S XYMTC,S YMTCS,F LDLDIָĸĽӵ㣬⻹ڷ֧·㡣

OUT ָȦָ̵̵ʱ״̬Ĵȣ̵ָڲʹöΡ

1-3

X000 Y000

ͼ1-3

1-4

ţƣ AND룩 ANDIǣ OR ORI ǣ

ͼʾ 㴮 մ㴮 㲢 մ㲢 Ԫ XYMTC,S XYMTC,S XYMTCS XYMTCS

ַ 0001 ָ OUT X000 Y000 0000 LD 2 㴮ָAND/ANDIָOR/ORI

ANDANDIָһĴޣָʹá

ORORIһIJָ

1-5

X001 X002 Y001 ַ 0002 X003 ͼ1-4

0003 0004 0005 ָ LD ANDI OR OUT X001 X002 X003 Y001

3 ·IJʹָORBANB

1-6

ţƣ ͼʾ Ԫ ORB ·鲢 ANB룩 ·鴮 ϴ㴮ӵĵ·Ϊӿ顱·鲢ʱ֧·LDLDNOTָʼ֧·յҪORBָORBָһֶָ󲻴ԪţˣORBָʾ㣬Կɵ·֮һߡҪ·鲢ӣӦÿ·֮ʹһORBָַʱ·ĸûƣҲɽҪĵ·дȻЩ·ĩβдORBָʱORBָʹ7Ρ

֧··飩ǰĵ·ʱʹANBָ·㣬ʹLDLDNOTָORBָһANBָҲԪҪ·鴮ӣӦÿ·֮ʹһANBָַʱ·ĸûƣʹANBָʹ7Ρ

ANB

X000 X002 X003 Y006 X001 X004 X005 ORB X006 X003

ͼ1-5

1-7

ַ ָ 0000 LD X000 0001 OR X001 0002 LD X002 0003 AND X003 0004 LDI X004 0005 AND X005 0006 OR X006 000

7 ORB 4 ָ

0008 ANB 0009 OR X003 0010 OUT Y006 END

1-8

ţƣ END ͼʾ Ԫ 4 ָEND

ڳдENDָPLCִֻеһEND֮ij򣬲дENDָPLCûĵһִеһˣʹENDָɨڡ⡣ڵԳʱԽENDָڸ֮󣬷ֶμεĶȷɾȥENDָ

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