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PLC backboard bus communication system and device based on FPGA

A technology of communication system and backplane bus, which is applied in the field of PLC backplane bus communication system and equipment based on FPGA, which can solve problems such as difficulty in guaranteeing PLC security and affecting system performance, and achieve the effect of avoiding hidden dangers of information security and avoiding loopholes

Active Publication Date: 2020-06-19
SHANDONG CHAOYUE DATA CONTROL ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing PLC security is difficult to guarantee
Most of the existing PLCs use SPI, RS485, FLEXRAY, CAN, etc. as the backplane bus. Although these buses have their own advantages, in some control systems that require a large amount of data exchange, such buses will greatly affect the performance of the system. performance

Method used

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  • PLC backboard bus communication system and device based on FPGA
  • PLC backboard bus communication system and device based on FPGA
  • PLC backboard bus communication system and device based on FPGA

Examples

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Embodiment Construction

[0033] Those of ordinary skill in the art can realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the relationship between hardware and software Interchangeability. In the above description, the composition and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

[0034] The block diagrams shown in the drawings are merely functional entities and do not necessarily correspond to physically separate entities. Tha...

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Abstract

The invention provides a PLC backboard bus communication system and device based on an FPGA. The PLC backboard bus communication system comprises a PLC processor module and a plurality of I / O modules.The PLC processor module is connected with the I / O module through a U-shaped connector; the PLC processor module is in communication connection with the I / O module through a BLVDS communication bus formed by FPGA configuration. The I / O modules are connected with each other through a U-shaped connector; the I / O module configured as a tail end is connected with a tail end terminal. According to thePLC backboard bus communication system of the FPGA, a BLVDS differential standard signal is formed by configuring an FPGA chip, so that the loophole caused by adopting a programmable logic device isavoided, and the information safety hidden danger caused by a back door of the programmable logic device is further avoided.

Description

technical field [0001] The invention relates to the field of autonomous PLC, in particular to an FPGA-based PLC backplane bus communication system and equipment. Background technique [0002] As a programmable, modular, easy-to-maintain, and highly reliable control device, PLC has been widely used in the fields of industry, aviation, aerospace, navigation, and weapon equipment control. Highly demanding key control systems related to the national economy and people's livelihood. The PLC backplane bus communication technology is the key technology that determines the communication speed and reliability between the PLC host and the extended IO. [0003] The BLVDS level standard is a low-swing high-speed differential transmission level standard extended from LVDS. It transmits data through a pair of parallel equal-length differential transmission lines with controlled impedance, which has strong anti-interference and low power consumption. The characteristics of low speed and ...

Claims

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Application Information

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IPC IPC(8): G05B19/05
CPCG05B19/054G05B2219/1103Y02P90/02
Inventor 于治楼尹双张磊胡博祎
Owner SHANDONG CHAOYUE DATA CONTROL ELECTRONICS CO LTD
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