第 壹 篇 入 门 篇
第1章 简介
1-1 什么是 PLC........................................................................................................1-1
1-2 DVP-PLC简介...................................................................................................1-2
第2章 进制系统及运算
2-1 十进制系统.........................................................................................................1-6
2-2 二进制系统.........................................................................................................1-7
2-3 八进位系统.........................................................................................................1-8
2-4 BCD码...............................................................................................................1-9
2-5 十六进制系统 ...................................................................................................1-10
第3章 阶梯逻辑图
3-1 阶梯图工作原理................................................................................................1-12
3-2 传统阶梯图与 PLC阶梯图之差异.....................................................................1-13
3-3 阶梯图组成及其术语定义..................................................................................1-14
3-4 步级数与组件地址............................................................................................1-17
第4章 内存
4-1 只读存储器.......................................................................................................1-21
4-2 随机存取内存 ...................................................................................................1-22
4-3 使用者内存.......................................................................................................1-23
4-4 映像表..............................................................................................................1-26
第5章 扫瞄时间及执行时间
5-1 刷新扫瞄...........................................................................................................1-29
5-2 直接扫瞄...........................................................................................................1-32
5-3 执行时间及装置形式.........................................................................................1-34
第6章 各种组件的功能
6-1 各部组件编号一览表.........................................................................................1-36
6-2 数值、常数.......................................................................................................1-37
6-3 输入/输出端的编号...........................................................................................1-39
6-4 步进点的编号(S)..........................................................................................1-40
6-5 定时器..............................................................................................................1-41
6-6 计数器..............................................................................................................1-421186