文档介绍：摘要
PLC是以计算机技术为核心的通用自动控制装置,也可以说它是一种用程序来改变控制功能的计算机。随着微处理器、计算机和通信技术的飞速发展,可编程序控制器PLC已在工业控制中得到广泛应用,而且所占比重在迅速的上升。PLC主要由CPU模块、输入模块、输出模块和编程装置组成。它应用于工业混合搅拌设备,使得搅拌过程实现了自动化控制、并且提升了搅拌设备工作的稳定性,为搅拌机械顺利、有序、准确的工作创造了有力的保障。本文所介绍的多种液体混合的PLC控制程序可进行单周期或连续工作,具有断电记忆功能,复电后可以继续运行。另外,PLC还有通信联网功能,再通过组态,可直接对现场监控、更方便工作和管理。
关键词:PLC,液位传感器,定时器
Automatic Liquid Mixing Device The of PLC Control System Design
ABSTRACT
PLC is a general-puter technology as the core of the automatic control device, you can also say that it is an application to change the puter. With the microprocessor, computer munications technology, the rapid development of programmable logic controller PLC is widely used in industrial control, and the rapid rise in the proportion. Mainly by the PLC CPU module, input module, output module and the programming position. It is used in industrial mixing equipment, making the mixing process of automated control, and work to enhance the stability of the mixing device for mixing machine smooth, orderly, and accurate work to create a strong guarantee. This paper described a variety of liquids can be mixed in the PLC control program for single-cycle or continuous work, with power and memory function, can continue to run after restoration. In addition, working functions as well, and through configuration, can be directly on-site monitoring, work and management more convenient.
KEY WORDS: PLC, level sensor, timer
目录
前言 1
第1章液体自动混合系统方案设计 3
3
系统的整体设计要求 3
4
6
第2章液体自动混合系统的硬件设计 7
7
PLC机型选择 7
PLC容量选择 8
I/O模块的选择 9
电源模块的选择 10
PLC I/O点分配 11
11
PLC的I/O接线图 12
12
液体混合控制系统示意 13
第3章液体自动混合系统的软件设计 15
程序设计的一般方法 15
15
15
15
PLC控制的相关流程图 16
控制流程图 16
可编程控制器梯形图 17
第4章组态设计 21
21
21
第5章系统调试 27
27
27
第6章系统常见故障分析及维护 31
系统常见故障分析及维护 31
系统故障分析及处理 31
PLC主机系统故障分析及处理 31
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