Base of intelligent temperature control system of PLC
Abstract :This design is in the intelligence temperature to control originally possessed the foundation of the system goes forward a line of hardware, software...etc. The temperature control system is an inertial system in empress in pure sluggish in a per rank, it have the obvious sluggish empress the characteristic, the extensive application in electric circuit in temperature control fucks the each realm that society live, such as appliance, car, material, electric power electronics etc., obtain demand fleetness very much with the situation( such as the medicine of system, chemical engineering, petroleum, food processing...etc.) that control the fact temperature the satisfied control in very difficult winning in method in control that adoption is generally result.
This text has introduced several kinds of more popular on-the-spot bus and characteristic at first, among them has introduced the characteristic of PROFIBUS and development prospect especially, and has explained the meaning of a subject and development trend; then has designed the hardware, provide the topological structure chart, has elected the necessary hardware part and introduced its function in detail , still provide the light hardware wiring diagram of the The temperature control system and hardware disposition form; use the growth curve in the communication network scheme of PROFIBUS network and communication principle, have introduced the agreement structure of PROFIBUS and store the agreement, explain structure, system behavior, data communication and expanded function of the hardwood,etc. in detail ; detail the system finally and work in the way, and design the systematic main program.
Keywords: on-the-spot bus PROFIBUS temperature control system