Pulp and paper control system

Abstract

The invention relates to a pulp and papermaking control system. The external I / O points or external chain signal modules of the control system are assigned to the external array data module. The external array data module is a custom data structure including input and output types. When calling the execution logic, the external array data module and local variables The module is assigned to the logic control module, the logic control module is executed through the CPU, and the logic operation result is returned to the external parameter module, or assigned to the external I / O point or the external chain signal module to the external array data module of the next control loop; the external array The data of the data module is transmitted to the control screen display function module through the communication link. The display function module includes a parallel picture control module, a picture record module and a picture alarm module.

Description

technical field [0001] The invention relates to the technical field of automatic control of high-speed paper making machines, in particular to a pulp and paper making control system. Background technique [0002] With the wide application of pulping equipment, higher and higher levels of automatic control, more complete control loops, and more and more process protection interlocks between equipment are required. In the 1990s, programmable logic controllers (PLCs) began to enter the stage of industrialization and practical use. , through the bus technology + module, the signal is collected back to the programmable controller for synchronous centralized control, which greatly improves the reliability and stability of the pulp and paper over-current control, but the function blocks used are basic or common , there is no special module for pulping and making paper. Moreover, at this stage, the calling structure of the program is relatively complex, the degree is not functional...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the unreasonable problem of the program structure existing in the prior art, and provide a reasonable program call mode, formulate a unified function module according to different devices, and the same type of application is only repeated calls or The control system of the transplanted pulp and paper making equipment, the control method of the pulp and paper making equipment, the logic control method of the regulating valve of the pulp and paper making equipment, the signal ramp function control method of the pulp and paper making equipment control system

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