摘要
本文介绍了以西门子S7-200系列PLC控制器为核心,以炉温为被控对象的炉温控制系统。阐述了炉温控制系统的工作原理、硬件电路设计和软件设计以及控制规律的选择等,以STEP 7-Micro/WIN为软件开发环境,采用PID控制方式,利用STEP 7-Micro/WIN自带的PID控制指令,程序经仿真实现了对炉温的控制要求。
The article introduces how to control the furnace temperature based on Siemens S7-200 PLC. Briefly introduces the working principle of the system, the design of hardware structure and software design method, control mode, etc. As for the STEP 7 MicroWlN software environment, the system uses PID mode provided by S7-200 PLC and completes the control requirements of temperature by procedure simulation.
