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Inverter and its address mapping method under modbus communication protocol

A technology of address mapping and communication protocol, applied in the direction of data exchange through path configuration, bus network, electrical components, etc., can solve the problems of time and production efficiency waste, difficult after-sales service, user economic loss, etc., and achieve the effect of easy replacement

Active Publication Date: 2018-09-25
WEIHAI MIKOM ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the existence of the original PLC or other control programs, different inverters need to be designed with different programs. If you want to replace the inverter, you can only replace the inverter and the control system together. The equipment manufacturer needs to re-develop and design the entire system. Bring some difficulties to after-sales service
Cause waste of time and production efficiency to users, and cause economic losses to users

Method used

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  • Inverter and its address mapping method under modbus communication protocol
  • Inverter and its address mapping method under modbus communication protocol

Examples

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Embodiment 1

[0039] The present invention will be further described below by taking a frequency converter system as an example, wherein the system has a host computer and at least one inverter 13 to be replaced that communicates with the host computer 12 under the MODBUS protocol.

[0040] The 3000 parameter address of the inverter to be replaced is the operation control command word, the 3001 parameter address is the main frequency setting, and the 2100 parameter address is the output frequency monitoring;

[0041] The 3B00 parameter address of the current inverter is the operation control command word, the 3B01 parameter address is the main frequency setting, and the 1E00 parameter address is the output frequency monitoring;

[0042] First, set the enable switch of the address mapping function to enable through the function menu of the current inverter to enable the address mapping function;

[0043] Through the function menu of the current inverter, set the mapping address 1 in the mapp...

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Abstract

The invention relates to a variable-frequency drive and application fields thereof, in particular to a variable-frequency drive and an address mapping method thereof under the MODBUS communication protocol which can map the Modbus communication addresses of different brands of variable-frequency drives into the same functional Modbus communication addresses via the MODBUS protocol. The invention is characterized in that a mapped address processing and storage module for receiving and storing mapped addresses sent by an upper computer of a system is also arranged in a communication module, wherein the mapped address processing and storage module is connected with a parameter address storage module. Compared with the prior art, the invention can map the Modbus communication addresses of variable-frequency drives of any factories into the same functional variable-frequency drive Modbus communication addresses, and consequently, under the premise of not replacing communication programs, various models of variable-frequency drives to be replaced can be conveniently replaced.

Description

technical field [0001] The present invention relates to the frequency converter and its application field, specifically a kind of through the MODBUS protocol, the Modbus communication address of the frequency converter of different brands is mapped to the frequency converter in the Modbus communication address with the same function and the frequency converter under the MODBUS communication protocol The address mapping method. Background technique [0002] Modbus was invented by Modicon (now a brand of Schneider Electric) in 1979, and it is the world's first real bus protocol for industrial field. In order to better popularize and promote the distributed application of Modbus on Ethernet, Schneider has transferred the ownership of the Modbus protocol to the IDA (Interface for Distributed Automation, distributed automation interface) organization, and established the Modbus-IDA organization for Modbus laid the foundation for future development. In China, Modbus has become t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/12H04L12/40
Inventor 赵海峰黎国材
Owner WEIHAI MIKOM ELECTRONICS TECH CO LTD
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