DP intelligent module and PLC control system and method

An intelligent module and control system technology, applied in the PLC field, can solve problems such as insufficient program encryption protection, PLC control module can only apply one control algorithm, etc., to shorten on-site debugging time, improve reliability and maintainability, and improve The effect of the function

Inactive Publication Date: 2016-10-05
HUADIAN HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a DP intelligent module, PLC control system and method to solve the problem of insufficient encryption protection of PLC algorithm programs in the prior art and the problem that a PLC control module can only apply one control algorithm

Method used

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  • DP intelligent module and PLC control system and method
  • DP intelligent module and PLC control system and method
  • DP intelligent module and PLC control system and method

Examples

Experimental program
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Embodiment 1

[0048] see figure 1 As shown, it is the first embodiment of the DP intelligent module provided in the embodiment of the present invention, which may include:

[0049] Main controller 1, DP slave module 2 and RS485 interface module 3.

[0050] The main controller 1 is connected with the DP slave station module 2, the DP slave station module 2 is connected with the RS485 interface module 3, and the RS485 interface module 3 is connected with the Profibus-DP bus. The main controller 1 can be connected to the DP slave module 2 through the SPI (Serial Peripheral Interface, Serial Peripheral Interface) interface. The Profibus-DP bus is based on the Profibus protocol and is used for communication between the device-level control system and the distributed I / O. The DP intelligent module can be connected to the Profibus-DP bus as a PLC slave station, and the PLC master station and other PLC slave stations can also be connected to the Profibus-DP bus, so that the DP intelligent module, ...

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Abstract

The invention discloses a DP intelligent module, which is used to solve the technical problems of insufficient encryption protection of PLC algorithm programs and the technical problem that a PLC control module can only apply one control algorithm. The DP intelligent module includes: a main controller and a DP slave station module And the RS485 interface module; the main controller is connected to the DP slave module, the DP slave module is connected to the RS485 interface module, and the RS485 interface module is connected to the Profibus‑DP bus; the main controller is used to receive, store and run the PLC control algorithm; The DP slave module is used to realize the data interaction between the main controller and the RS485 interface module; the RS485 interface module is used to realize the data interaction between the DP slave module and the Profibus‑DP bus. The invention also discloses a PLC control system and method.

Description

technical field [0001] The present invention relates to the technical field of PLC (Programmable Logic Controller, programmable logic control), in particular to a DP (Decentralized Periphery, decentralized peripheral equipment) intelligent module, PLC control system and method. Background technique [0002] Programmable logic control PLC system is a series of logic controllers that use programmable logic memory to realize some user-defined automatic control, logic operation, counting and timing functions introduced by the United States in the 20th century to replace traditional relay devices. Due to the advantages of wide adaptability, good stability, and strong anti-interference ability, PLC has been widely used in various fields of industrial production, and its development is very rapid. At present, almost all large-scale machinery and production lines use PLC systems based on industrial networks to implement control and communication, so as to realize the integration of ...

Claims

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Application Information

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IPC IPC(8): G05B19/05
CPCG05B19/056G05B2219/13004
Inventor 周铁梁叶阜刘清徐小强谢兆青梅迎春张溧栗陈凤香陈超连磊谭冲
Owner HUADIAN HEAVY IND CO LTD
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