General steps of PLC control system design

PLC control system design of general steps newmaker welcome to e hall exhibition hall 3 PLC PLC programmable controller, PLC programming cable. 。 。 Design PLC application system, the first is the function of PLC application system design, namely according to the requirements of the controlled object function and process, a clear system must do work and therefore essential condition. Then analyzed the function of PLC application system, by analyzing the system function, put forward the structure of PLC control system, control signal type and quantity, scale, layout of the system. Finally according to the result of system analysis, the determination of the specific PLC model and specific configuration of the system. PLC controller control system can be designed according to the following steps. Be familiar with the controlled object, analysis of the controlled process control plan and working characteristics of understanding between the controlled machine, electricity, liquid, determine the controlled object to the control requirement of the PLC control system. Determine the I/O device according to the requirements of the system control, determine the input for the user ( Such as buttons, trip switch, switch, etc. ) And output devices ( Such as the contactor, solenoid valve, signal lamp, etc. ) Determine the PLC I/O points. Choose when the choice of PLC controller mainly includes PLC models, capacity, I/O module, the power of choice. Allocation of PLC I/O address, according to the production equipment on site to determine the control button, selector switch, contactor, electromagnetic valve, the signal light is all sorts of input and output devices such as the model, specification and quantity; Listed according to the selected PLC model input/output devices and the PLC input and output terminals of the table, in order to draw PLC external I/O wiring diagram and programming. Design software and hardware of PLC program design, carries on the control cabinet ( A) Such as hardware design and site construction. Due to program and the hardware design can be simultaneously, therefore, can greatly shorten the design cycle of PLC control system, and to relay system must be designed after all of the electrical control circuit design to construction. On-line debugging on-line debugging refers to the simulation debugging through the program online tracking. In the beginning, not to take the output device ( Contactor coil, signal lights and other load) For debugging. The monitoring function of programmer, segmented debugging method. All the parts after debugging to normal, with actual load operation. If do not conform to the requirements, adjust the hardware and the procedure. Usually only need to modify the part program, all after the debugging, commissioning. After a period of time running, if working properly, the program does not need to modify the program should be solidified in the EPROM, in case the program is missing. Organize technical documents including design manual, electrical installation drawing, electrical component list and instruction manual, etc.
The point for Shenzhen Coolmay Technology Co., Ltd. is that managerial processes are as important as other inputs in production and can create significant competitive advantage.
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