l 程序：PLC指令的有序调集，PLC运转它，可进行相应的作业，当然，这儿的程序是指PLC的用户程序。用户程序一般由用户计划，PLC的厂家或代销商不供给。用句子表达的程序不大直观，可读性差，格外是较杂乱的程序，更难读，所以大都程序用梯形图表达。
FOXBORO P0500RY
P0970BC DNBI
P0971WV DNBT
P0960AW CP30
P0960JA CP40
P0961FR CP60
P0400DA FBM01
P0400YC FBM02
P0400YD FBM03
P0400YE FBM04
P0400YF FBM05
P0400YG FBM06
P0400YH FBM07
P0400YJ FBM08
P0400YK FBM09
P0400YL FBM10
P0400YM FBM11
P0400YN FBM12
P0400YP FBM13
P0400YQ FBM14
P0400YR FBM15
P0400YS FBM16
P0400YT FBM17
P0400YV FBM18
P0700QV FBM20
P0700TW FBM21
P0900HS FBM22
P0900HT FBM24
