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可编程序控制器. 主讲:张波. 第八章 基于 S7 系列 PLC 单机控制系统设计. PLC 应用系统设计原则、内容与步骤. 8.1. PLC 应用系统的硬件设计. 8.2. PLC 应用系统的软件设计. 3. 8.3. S7 系列 PLC 应用系统设计举例. 3. 8.4. 设计原则. 8.1 PLC 应用系统设计原则、内容与步骤. 满足要求. 安全可靠. 经济实用. 适应发展. 设计与调试步骤. 被控对象的工艺条件和控制要求分析。 确定 I/O 设备 选择合适的 PLC 类型 分配 I/O 点 设计应用系统梯形图程序 将程序输入 PLC

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可编程序控制器

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S7PLC

PLC

8.1

PLC

8.2

PLC

3

8.3

S7PLC

3

8.4


8.1 PLC


  • I/O

  • PLC

  • I/O

  • PLC


PLC

8.2 PLC


  • PLCI/OI/OI/O1015PLCI/OI/O30

  • X10

  • X8

  • //X2

  • X100

  • X300

  • (KB)(1~2.5)X(DIX10+DOX8+AI/OX100+CPX300)/1024

I/O


    • PLC


  • :

    • 1PLC

      • 24V12V10m

    • 23260

I/O


  • 1

  • 2

  • 3


    • PLCPLC

    • I/OCPUPLCPLCPLC


    • PLC

      • PLC

      • PLC

      • PLC


    8.3 PLC

    • PLC

    • I/O

    • PLC


    • I/O


    • PLCI/O


    8.4 S7PLC


    KM2

    SB0

    KM1

    SB1

    KM1

    KM2

    KM2

    SB2

    KM1

    -KM1KM2SB1SB2SB0


    • I/O

      SB0SB1SB2PLCI0.0I0.1I0.2 KM1KM2Q0.0Q0.1I/O

      SB0I0.0 KM1Q0.0

      SB1I0.1 KM2Q0.1

      SB2I0.2


    -PLC


    PLC


    PLC


    A

    B

    • 1ABA1minBB1minABB1minA1min

      2

      3


    SQ1

    KM1

    KM2

    SB0

    SB1

    H1

    KM1

    KT1

    KT2

    SQ1

    KM2

    KM1

    SQ2

    SB2

    KM2

    H2

    KT1

    KT2

    SQ2

    -

    SB0

    SB1A

    SB2B

    KM1A

    KM2B

    SQ1A

    SQ2B

    KT1A

    KT2B

    H1A

    H2B


    • I/O

      SB0SB1SB2SQ1SQ2PLCI0.0I0.1I0.2I0.3I0.4 KM1KM2H1H2Q0.0Q0.1Q0.2Q0.3

      I/O SB0I0.0 KM1Q0.0

      SB1I0.1 KM2Q0.1

      SB2I0.2 H1 Q0.2

      SQ1I0.3 H2 Q0.3

      SQ2I0.4


    PLC


    1

    ABAVLCA


    2

    • AVLCI1.51I0.5I0.5=1

    • 10S

    • I0.4I0.4=1

    • I0.7I0.7=1


    • I0.5BI0.5=1

    • 10S10S

    • I0.4I0.4=1

    • I0.46I0.6= 1



    • ,3,I0.0I0.1I0.2I0.3

    • 4I0.4I0.5I0.6I0.7

    • 5I1.0I1.1I1.2I1.3I1.4VLCI1.514

    • Q0.0Q0.1Q0.2Q0.3Q0.45

    • S7-200CPU22414/10


    PLCI/O


    (1)

    I0.0

    I0.1

    I0.2

    I0.3

    I0.4

    I0.5

    I0.6

    I0.7

    I1.0

    I1.1

    I1.2

    I1.3

    I1.4

    I1.5

    A

    Q0.0

    Q0.1

    Q0.2

    Q0.3

    Q0.4

    3I/O


    4

    • ()

    • ,8

    • I0.4=1I0.6=1AI1.5=1Q0.0=1


    1I0.5=1Q0.0=0

    2Q0.4=110S

    310sQ0.1=1I0.4=1Q0.1=0

    4Q0.2=1I0.7=1Q0.2=0

    5Q0.0=1I0.5=1Q0.0=0

    6Q0.4=010S

    710sQ0.1=1I0.4=1Q0.1=0

    8Q0.3=1I0.0=1Q0.3=0



    5

    • ,I/OPLC


    1

    I0.0

    2

    I0.1

    3

    I0.2

    4

    I0.3

    5

    I0.4

    6

    I0.5

    7

    I0.6

    8

    I0.7

    9

    I1.0

    10

    I1.1

    11

    I1.2

    12

    I1.3

    13

    I1.4

    14

    A

    I1.5

    15

    Q0.0

    16

    Q0.1

    17

    Q0.2

    18

    Q0.3

    19

    Q0.4

    20

    T101

    =100msTON

    21

    T102

    =100msTON

    22

    M0.0

    Bool

    23

    M0.1

    Bool

    24

    M0.2

    Bool

    25

    M0.3

    Bool


    X

    X

    H

    I

    L

    X

    • 3HBIAL

    • 3X1A X2B X3OFF

    • MMOFFON


    1

    • :X1=X2=X3=OFF,H=I=L=OFFM=OFF

    • :SB1

      • AX1A

      • LL=ONAII=ONX1=OFF,X2=ONAX1

      • BX2HBX2MX2=OFF,M=ON

      • 60M=OFFX3

      • LL=OFF10X3X3=OFF

    • :SB2


    2

    • 5HIL

    • 4X1X2X3M

    • 909X1090

    • PLCS7-200CPU224I/O1486


    PLC


    3I/O


    4

    • X1=X2=X3=0,I0.2=I0.3=I0.4=0Q0.3=0

    • SB1I0.0=1,1AQ0.01A

    • LL=ONI0.4=1AII=ONI0.3=1Q0.0=0,Q0.1=1AB

    • HI0.2=1,BX2MQ0.1=0, Q0.3=1T101

    • 60Q0.3=0X3Q0.2=1

    • LI0.4=010X3Q0.2=0


    1

    A

    4

    AI

    L

    B

    2

    5

    BH

    3

    6


    5


    1


    • 302525322

    • 302532


    I0.0

    25s

    25s

    3s

    Q0.0

    2s

    Q0.1

    Q0.2

    Q0.3

    Q0.4

    Q0.5

    30s


    2

    • 3

    • 6

    • PLCS7-200CPU222I/O1486


    • XYZT1-T6XYZ

    • XYZDECXDECYDECZXXXYYYZZ

    • T1T2T3T4T5T6


    • DECXDECYDECZ.

    • XYZZXYT1-T2-T3-T4-T5-T6Z

    • T1-T2-T3ZT4-T5-T6XY


    • XZT1ZYZT2ZXYZT3ZZT4T4XZZT5T5YZZT6

    • T1T3T4T5


    • T6XYZ

    • T6XYDECXDECY3XYT6ZDECZ Z2


    I/O

    1

    =I0.0

    DECX=I0.1X=I0.2X=I0.3

    DECY=I0.4Y=I0.5Y=I0.6

    DECZ=I0.7Z=I1.0Z=I1.1

    2

    T1=Q0.0 T2=Q0.1 T3=Q0.2 T4=Q0.3 T5=Q0.4 T6=Q0.5

    =Q1.2X=Q1.3

    Y=Q1.4Z=Q1.5


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