Abstract
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 reliability 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
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 visualization and it will play more and
more important part in the field of automatic control.
This essay mainly introduces a design of temperature control system with
SIMATIC programmable logic controller (PLC) and configuration software Kingview
which is developed by Beijing Yakong Company. When programming, 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 more quickly. In
order to monitor the control system and process data in actual time, we designed
Human Machine Interface (HMI ) with the configuration software Kingview. The
result of experiment proves that this temperature control system could run quickly,
accurately and have good stability, which is the advantage of the control system. This
control system has been widely used in the industrial temperature control field.
With the continuous development of automatic science and technology, high-
precision, intelligent, user-friendly temperature control system is the inevitable trend
of development at home and abroad.