Design of temperature control system of a heat exchanger at heating manifold based on host-guest architecture of double S7-200PLC

This article to a heater of the heating manifold to the heater for the use of Siemens double S7 - 200PLC host-guest architecture of the plc to solve external I/O terminals more problems and uses eview5000 the screen as a system of the upper and PID typed panel fulfilled the tune of four for a heat exchanger temperature control, with a manually controlled, the two ways to achieve the accuracy of its control book, system and low cost, friendly and control flexible.