2100e数控系统PLC编程手册2100ePLC编程手册目录1PLC概述...............................................................................................21.1航天数控2100E系统PLC的性能............................................................21.2PLC的功能...............................................................................................21.3PLC信号分类...........................................................................................22梯图语法规则.......................................................................................32.1简介...........................................................................................................32.2语句...........................................................................................................32.2.1等式....................................................................................................32.2.2等式名................................................................................................32.2.3等式值................................................................................................42.2.4注释部分............................................................................................42.2.5标号....................................................................................................42.2.6指令语句............................................................................................42.3源文件的设计...........................................................................................52.3.1了解机床逻辑动作要求....................................................................52.3.2了解PLC与系统（NC）之间信号的约定.......................................62.3.3了解机床梯图的框架........................................................................62.3.4梯图语言的编码................................................................................62.3.5生成梯图目标码................................................................................72.3.6PLC目标码的写入..........................................................