西门子PLC培训系列资料8

位指令I0.0I0.1Q8.0Q8.1SRSQRI1.2I1.3M0.0Q9.3I1.0(MCR<)(MCRA)Q8.0I0.0I1.1()

L1(Q4.0)S1(I0.0)S2(I0.1)

L2(Q4.1)电路图基本逻辑指令：与,或I0.2I0.3>=1=Q4.2O I0.2O I0.3= Q4.2I0.0I0.1Q4.0Q4.1LAD=Q4.0&I0.0I0.1=Q4.1FBDA I0.0A I0.1= Q4.0= Q4.1STLI0.2I0.3Q4.2L3(Q4.2)S3(I0.2)S4(I0.3)ORAND基本逻辑指令：异或(XOR)X I0.4X I0.5= Q4.0I0.4I0.5XOR=Q4.0I0.4I0.5I0.4I0.5Q4.0LAD

>=1=Q4.0&I0.4I0.5&I0.4I0.5FBDSTLA I0.4AN I0.5OAN I0.4A I0.5= Q4.0逻辑操作结果，首次检查，举例A I1.0AN I1.1A M4.0= Q4.0= Q4.1A I2.0例1信号状态0000检查结果逻辑操作结果首次检查信号状态检查结果逻辑操作结果首次检查1例2111信号状态检查结果逻辑操作结果首次检查1例3010常开和常闭触点，传感器和符号输入端

的信号

状态检查信号状态“1”符号/指令检查

结果检查信号状态“0”符号/指令检查

结果有输入端

有电压吗?无有无101Yes1LAD:

常开触点0&FBD:AIx.ySTL:ANIx.ySTL:&FBD:LAD:常闭触点

No0

Yes1

No0

No0

Yes1

Yes1

No0过程PLC程序中的解释动作不动作传感器

是...动作不动作常开

触点传感器

是...常闭

触点练习8.1:常开点与常闭点任务：当

S1动作和S2不动作时，在所有三个例子中灯应该点亮!I1.0I1.1Q4.0I1.0I1.1Q4.0.......I1.0.......I1.1.......Q4.0Q4.0I1.0I1.1&Q4.0I1.0I1.1&Q4.0I1.0I1.1&.......I1.0.......I1.1.......Q4.0.......I1.0.......I1.1.......Q4.0软件I1.0S1I1.1S2I1.0S1I1.1S2I1.0S1I1.1S2Q4.0可编程控制器LightLightLightQ4.0可编程控制器Q4.0可编程控制器FDBSTLLAD硬件I1.0I1.1Q4.0I1.0I1.1I1.0I1.1I1.0I1.1赋值，置位，复位(S)Q4.1I1.2I1.3I1.2&SQ4.1I1.3AI1.2

AI1.3

SQ4.1置位(R)Q4.1I1.4I1.4>=1RQ4.1I1.5OI1.4

OI1.5

RQ4.1复位I1.5()Q4.0I1.0I1.1I1.0&=Q4.0I1.1AI1.0

AI1.1

=Q4.0赋值LADFBDSTL触发器的置位/复位SRRQSI1.2I1.3M0.0=Q5.3复位

优先SRSQRI1.2I1.3M0.0Q5.3AI1.2

SM0.0

AI1.3

RM0.0

AM0.0

=Q5.3RSSQRI1.3I1.2M0.0=Q5.3置位

优先RSRQSI1.3I1.2M0.0Q5.3AI1.3

RM0.0

AI1.2

SM0.0

AM0.0

=Q5.3LADFBDSTL连接器LADI1.0I1.1()M0.0I2.0I2.1()M1.1NOT()Q4.0A I 1.0A I 1.1= M 0.0A M 0.0A I 2.0A I 2.1NOT= M 1.1A M 1.1= Q 4.0STLI1.0I1.1&&I2.0I2.1M0.0M1.1Q4.0=FBD练习8.2:基本逻辑操作指令影响RLO的指令LADFBDSTLAI0.0AI0.1NOT=Q4.0 =Q4.0&I0.0I0.1()Q4.0NOTI0.0I0.1NOTStatusword1581BRRLO不存在不存在CLRCLR不存在不存在SETSETI1.6(SAVE

)

SAVE&I1.6SAVEAI1.6SAVE=Q4.1BRBR(

)

Q4.1BRABR=Q4.1主控继电器功能MCR<&A0.0MCRAS&A0.4Q8.0MCR>&=M5.5M69.0I2.7MCRD&=A0.7Q4.5M0.6=FBDMCRA //激活AI0.0 //允许

MCRMCR( //打开

MCRAI0.7 //NO触点=Q4.5 //输出线圈=M0.6 //输出线圈AI0.4 //NO触点SQ8.0 //置位输出

)MCR //关闭

MCRANM5.5 //紧急触点ANI2.7 //紧急触点=M69.0 //输出线圈MCRD //取消STLLAD(MCRA)I0.7()Q4.5()M0.6I0.4(S

)Q8.0()M69.0

I2.7M5.5(MCR<)(MCRD)(MCR>)I0.0无条件跳转(不依赖于

RLO)(JMP)NEW1Network1Network2::::NetworkxNEW1()M69.0I2.7M5.5LADNEW1JMP....NEW1&M5.5I2.7=M69.0Network1Network2::::NetworkxFBDNetwork1

JUNEW1Network2::::NetworkxNEW1: ANM5.5 ANI2.7 =M69.0STL条件跳转(依赖于

RLO)AI0.0AI0.1JCNEW1NEW1I0.0I0.1&I0.0I0.1JMPNEW1(JMP)如果RLO=1

就跳转AI0.2AI0.3JCNNEW2JMPNI0.2I0.3NEW2NEW2I0.2I0.3如果RLO=0

就跳转(JMPN)&LADFBDSTLRLO-边沿检测PI1.0I1.1M1.0M8.0NI1.0I1.1M1.1M8.1LADI1.0I1.1P=&M1.0M8.0I1.0I1.1N=&M1.1M8.1FBD

A I1.0 A I1.1 FP M1.0 = M8.0

A I1.0

A I1.1

FN M1.1

= M8.1

STLI1.0I1.1RLOM1.0M8.0M8.1M1.1OB1-循环例如信号-边沿检测I1.1=M8.0POSM_BITM1.0&I1.0I1.1=M8.1NEGM_BITM1.1&I1.0FBD

A I1.0 A (