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A PLC system and its control method

A control method and technology for controlling modules, applied in the field of PLC system and its control, can solve the problems of multiple wiring, unfavorable module expansion, large time delay and signal interference, etc.

Active Publication Date: 2021-08-27
SHENZHEN INVT ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the existing technology, the addressing of the expansion modules is completed by the main control board and assigned to each expansion module. There is a large time delay and signal interference in the information transmission between the main control board and each expansion module, and the communication effect is low. not ideal
At the same time, this distribution method requires more wiring, which is not conducive to module expansion

Method used

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  • A PLC system and its control method
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Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0035] In the existing technology, the addressing of the expansion modules is completed by the main control board and assigned to each expansion module. There is a large time delay and signal interference in the information transmission between the main control board and each expansion module, and the communication effect is not good. Very ideal. At the same time, this distribution method requires more wiring, which is not conducive to module expansion.

[00...

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Abstract

The application discloses a PLC system and a control method thereof. The PLC system includes N sequentially cascaded control modules, of which the first control module is a CPU module, and the remaining control modules are expansion modules; the i-th control module is used to: receive the expansion sent by the i‑1th control module The address is used as the module address of the control module, and a new extended address is generated according to the module address; where 1

Description

technical field [0001] The invention relates to the field of industrial automation control, in particular to a PLC system and a control method thereof. Background technique [0002] As the core component of industrial automation control, PLC (Programmable Logic Controller) is often used in various automated production lines to meet different technical requirements, such as general switch input acquisition and control, general switch output control, analog Quantity input acquisition and control, analog output control, temperature acquisition and control, etc. These technical requirements are usually realized in the form of expansion modules. [0003] However, in the existing technology, the addressing of the expansion modules is completed by the main control board and assigned to each expansion module. There is a large time delay and signal interference in the information transmission between the main control board and each expansion module, and the communication effect is lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/05
CPCG05B19/054G05B2219/1103
Inventor 禤大祥
Owner SHENZHEN INVT ELECTRIC
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