3、有控制能力强、操作灵活方便、可靠性高、适宜长期连续工作的特点，非常适合温度控制的要求。 在工业领域，随着自动化程度的迅速提高，用户对控制系统的过程监控要求越来越高，人机界面的出现正好满足了用户这一需求。人机界面可以对控制系统进行全面监控，包括过程监测、报警提示、数据记录等功能，从而使控制系统变得操作人性化、过程可视化，在自动控制领域的作用日益显著。 编程时调用了编程软件STEP 7 -Micro WIN中自带的PID控制模块，使得程序更为简洁，运行速度更为理想。实验证明，此系统具有快、准、稳等优点，在工业温度控制领域能够广泛应用。 关键词：温度控制;可编程控制器;人机界面 Ab
4、stract: Programmable Logic Controller (PLC) is a kind of automatic control equipment which is widely used in the industrial manufacture. It merges the traditional control technology, computer and communication technologies with a strong ability to control, flexible operation, high reliabili
5、ty and suitable for long-term characteristics of continuous work. It is very suitable for temperature control requirements. In the industrial field, with the rapid increase in the degree of automation, it is more and more important to monitor the process of control system for the users. The
6、emergence of human-machine interface meets the needs of users. Man-machine interface can comprehensively monitor the control system, including process monitoring, alarm, data logging and other functions, so that the control systems have become user-friendly operation, the process of visualiz
7、ation and it will play more and more important part in the field of automatic control. we use the PID control arithmetic software module which is contained in the program software STEP 7 -Micro WIN so that the program looks easier and operates mor
