PLC在电镀生产线上的应用
图7 STL梯形图
5.3起保停电路程序
它是一个比较专业的控制程序，对于普通的程序都要加一个注释，因为可读性不大，通常是电气工程师才会编制这些程序。同时本次故障电路也写到起保停电路程序里去了。主要是它的运行快，一些简单的PLC只能运行该程序。同时对于本次设计的故障电路我也把它放在起保停电路中。
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PLC在电镀生产线上的应用
M519 X16 M501 M500 M8002 Y000 M500 M500 X000 M502 M501 M501 Y001 M501 X15 M503 M502 M502 Y003 M502 X11 M504 M503 M503 Y002 M503 X16 M505 M504 M504 M504 T0 M504 T0 M506 M505 M505 Y001 M505 X15 M507 M506 M506 T1 17
PLC在电镀生产线上的应用
M506 T1 M506 T1 M508 M507 M507 Y004 M507 X12 M509 M508 M508 Y002 M508 X16 M510 M509 M509 M509 T2 M509 T2 M511 M510 M510 Y001 M510 X15 M512 M511 M511 T3 M511 T3 18
PLC在电镀生产线上的应用
M513 M511 T3 M512 M512 Y004 M512 X13 M514 M513 M513 Y002 M513 M508 X16 X16 M515 M510 M514 M514 M514 T2 M514 T2 M516 M515 M515 Y001 M515 X15 M517 M516 M516 M516 T3 M516 T3 M518 M517 M517 Y004 19
PLC在电镀生产线上的应用
M517 X14 M519 M518 M505 Y002 M518 X16 M500 M519 M519 M500 X6 X2 X15 Y002 Y001 M501 M505 M510 M515 M500 X6 X3 X16 Y001 Y002 M503 M508 M513 M518 M500 X6 X15 X4 X11 Y4 Y003 M502 M500 X0 X15 X5 X14 Y003 Y004 M507 M512 20