A method of equipment logic control based on plc/dcs

Abstract

A PLC / DCS-based equipment logic control method, the method includes step 1: collecting equipment information; step 2: classifying the equipment on site, and establishing the equipment class library; step 3: designing the logic control schematic diagram of each type of equipment , and establish a logic control principle library; Step 4: Develop the logic control module of each type of equipment on the selected PLC / DCS platform, and establish a logic control module library; Step 5: Collect field device information, and pass the device class The call of the logic control module completes the logic control module of each equipment on site, and performs logic control on each equipment on site respectively; the proposal of the present invention accelerates the speed of program development, reduces the cost of equipment logic control, program development, program testing, and on-site debugging. Difficulty; it is conducive to the accumulation of engineering experience; it reduces the requirements for the electrical professional skills of program developers, and reduces the participation of professionals.

Description

technical field [0001] The invention belongs to the technical field of electrical automation, and in particular relates to a PLC / DCS-based equipment logic control method. Background technique [0002] In the process industry, the logic control of the field equipment is realized by the equipment logic control program. The traditional modular programming method is to establish corresponding subroutine modules for each device, and then the main program calls each subroutine module according to the logical relationship of the process, so as to realize the logic control of the field devices. The above-mentioned traditional modular program design and development method can realize the sharing of system resources among subprogram modules, between the subprogram module and the main program module, and can realize the parameter calling and value passing processing of the subprogram, and the processing speed is fast. For a more complex process, the program structure is more complicat...

AI Technical Summary

Problems solved by technology

The above-mentioned traditional modular program design and development method can realize the sharing of system resources among subprogram modules, between the subprogram module and the main program module, and can realize the parameter calling and value passing processing of the subprogram, and the processing speed is fast. When the process is more complex, the program structure is more complicated, and the program volume is very large

[0003] Modern technological processes are becoming more and more complex, involving more and more equipment, and the logical interlocking relationship between each equipment is also becoming more and more complex, which leads to large and medium-sized control systems (I / O points above 1024 ) device logic control program design and development, the workload of program design, development and maintenance is relatively large, the design and development cycle is relatively long, and there are many design and development personnel who need to participate; and due to the complexity of the software, when When on-site program debugging is required, only the participating programmers can be competent. If the project scale is relatively large, involves a lot of equipment, or the project implementation site is far away, the traditional modular method cannot meet the needs of the development of new process control systems, so , How to increase the speed of program design and development, reduce the number of people involved in design and development, thereby reducing project costs, and improving the maintainability of programs is a difficult problem faced by many automation companies at present

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