CN216361919U

CN216361919U - Induction brazing controller with Modbus TCP communication function

Info

Publication number: CN216361919U
Application number: CN202122211459.4U
Authority: CN
Inventors: 王超; 李志钢; 杨伟君; 王婥约; 黄华妹; 王芳; 赵立萍; 金爱明; 罗军; 肖致富; 叶盛兰; 唐辉; 郝林栋; 叶苏恂; 钱亦平; 蔡继芳; 傅志全; 易兴江; 喻文杰; 李波
Original assignee: Shanghai Guolong Instrumentation Co ltd
Current assignee: Shanghai Guolong Instrumentation Co ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-04-22
Anticipated expiration: 2031-09-13

Abstract

The utility model discloses an induction brazing controller with a Modbus TCP communication function, which is characterized in that: the induction brazing controller is connected with a client side and a TCP (transmission control protocol) through the Ethernet module, the Ethernet module receives request data sent by the client side and forwards the data to the induction brazing controller, the induction brazing controller identifies and judges the data and then sends the data needed by the client side to the client side through the Ethernet module, and the Modbus protocol and the Modbus TCP protocol are mutually converted through the Ethernet module, so that a group control function of networking between the client side and the induction brazing controller through the Ethernet is realized. According to the utility model, by adding the Ethernet module, the single chip microcomputer only with the serial port can realize Modbus TCP communication based on the Ethernet, and the group control function of networking between the client and the plurality of induction brazing controllers through the Ethernet is realized.

Description

Induction brazing controller with Modbus TCP communication function

Technical Field

The utility model relates to an induction brazing controller with a Modbus TCP communication function.

Background

Brazing, which is a welding method for connecting metals by filling gaps of workpieces with liquid brazing filler metal after the brazing filler metal lower than the melting point of the workpieces and the workpieces are heated to the melting temperature of the brazing filler metal at the same time. The heating mode of brazing includes flame heating, self heating of workpieces through large current, resistance furnace heating, induction heating and the like, wherein the induction heating has the characteristics of high heating speed, high efficiency, accurate temperature control, good consistency and the like, is agreed by users, and is particularly suitable for welding of special workpieces, such as contacts, connecting pieces and the like of electrical elements.

With the increasing industrial automation degree, the requirements on the brazing controller are also increasing, and the controller is required to have a communication function in many occasions so as to realize the functions of remote control, data recording, unified management and the like. Particularly, in some automatic production lines, the upstream and downstream processes are linked, and the communication function is not separated from the signal interaction between the robot and the like.

The common brazing controller generally has an RS485 serial interface, usually adopts a Modbus RTU or Modbus ASCII protocol to communicate with an upper computer or other equipment, and is based on the Modbus protocol communication of a serial port, wherein Modbus is a master-slave answer type protocol, only one master station in a system is the upper computer, and the rest are slave stations, namely lower computers. When the master station needs to acquire data, the master station actively sends out a related request instruction, and after the corresponding slave station receives the instruction, the related data are sent to the master station according to the instruction content. The slave does not actively transmit data, and the slave must relay through the master to transfer data. At the same time, the master station can only read the data of one slave station, if the data of a plurality of master stations are needed, the data of each slave station needs to be read in sequence, and if the number of the slave stations is large, the time consumption is long.

RS485 is a serial interface, the baud rate is generally 2.4 Kbps-115.2 Kbps, theoretically, the transmission distance is 1.2Km at the lowest baud rate, the transmission distance is about 100m at the highest baud rate, and the actual transmission distance is shorter due to field environmental factors in actual use. When the welder is not centralized, the communication distance may far exceed the maximum transmission distance of the RS485 serial port.

Disclosure of Invention

The technical problem to be solved by the utility model is as follows: the existing brazing controller generally adopts an RS485 communication mode to communicate with an upper computer, and has the problems of short communication distance and poor anti-interference capability.

In order to solve the above problems, the technical solution of the present invention is to provide an induction brazing controller with Modbus TCP communication function, which is characterized in that: the induction brazing controller is connected with a client side and a TCP (transmission control protocol) through the Ethernet module, the Ethernet module receives request data sent by the client side and forwards the data to the induction brazing controller, the induction brazing controller identifies and judges the data and then sends the data needed by the client side to the client side through the Ethernet module, and the Modbus protocol and the Modbus TCP protocol are mutually converted through the Ethernet module, so that a group control function of networking between the client side and the induction brazing controller through the Ethernet is realized.

Preferably, the ethernet module comprises a serial port communication part for communicating with the induction soldering controller, a protocol conversion part for converting a Modbus protocol and a Modbus TCP protocol into each other, a MAC controller for managing device addresses, a data transceiver and an RJ45 interface.

Preferably, the ethernet module and the client and the ethernet module and the induction soldering controller are connected by an ethernet switch.

Preferably, the induction brazing controller is a single chip microcomputer with a serial port communication function.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the single chip microcomputer only provided with the serial port can realize Modbus TCP communication based on the Ethernet by adding the Ethernet module, and the Ethernet module converts a Modbus protocol and the Modbus TCP protocol to realize the group control function of networking between the client and the plurality of induction brazing controllers through the Ethernet. Modbus TCP communication is carried out between the induction brazing controller and the client based on the Ethernet, and the Modbus TCP communication method has the advantages of long communication distance, strong anti-interference capability, large node capacity, high transmission speed and the like.

Drawings

FIG. 1 is a schematic diagram of communication between a client and an induction soldering machine using the present invention;

FIG. 2 is a schematic diagram of an assembly module of an induction brazing controller with a Modbus TCP communication function according to the present invention;

FIG. 3 is a schematic diagram of data transmission and reception when communication is performed according to the present invention;

fig. 4 is a communication flow chart of communication using the present invention.

Detailed Description

In order to make the utility model more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

As shown in fig. 1, the induction brazing controller with the Modbus TCP communication function of the present invention includes an induction brazing controller and an ethernet module, and a plurality of induction brazing controllers are connected with a client via the ethernet module and establish TCP connection. The Modbus TCP is a Modbus communication protocol based on the Ethernet, a main station is called a client, a slave station is called a server, each server has a separate IP address, and the capacity of the node depends on the size of a local area network, and is generally 255. The client and the server are connected through a network cable, the speed can reach 100M or 1000M, and the transfer can be carried out through an Ethernet switch. The Ethernet module converts the Modbus protocol and the Modbus TCP protocol, and achieves the group control function of networking between the client and the plurality of induction brazing controllers through the Ethernet.

1. Composition of

As shown in fig. 2, the ethernet module mainly comprises a serial port communication part, a protocol conversion part, a MAC, a data transceiver PHY, and an RJ45 interface. The serial communication is a part for data transmission between the serial port of the singlechip and the serial port of the Ethernet module. The protocol conversion part is used for converting the Modbus protocol and the Modbus TCP protocol into each other. The MAC controller is used to manage the device address, the PHY acts as a data transceiver, and the RJ45 is a standard hardware interface.

2. Principle of operation

As shown in fig. 3, a single chip microcomputer (51 series) adopted by a main control part of the brazing controller generally has only a serial port communication function, an ethernet module plays a role of an intermediate bridge, a client sends request data, the ethernet module receives the data and forwards the data to a receiving end of the single chip microcomputer, the single chip microcomputer identifies data content, the data required by an upper computer is sent through a sending end, and the ethernet module packages the data sent by the single chip microcomputer and forwards the data to the client.

3. Workflow process

As shown in fig. 1 and 4, after the power is turned on, initialization is performed first, after initialization is completed, the ethernet module and the client start to establish TCP connection, after connection is successful, the client starts to send request data to the server, after receiving data sent by the client, the ethernet module performs protocol conversion and forwards the data to the single chip microcomputer, the single chip microcomputer performs identification and judgment after receiving data sent by the client, sends corresponding data to the client, performs protocol conversion and packaging after receiving data sent by the single chip microcomputer, and sends the data sent by the server to the client, and the client performs identification and unloading on the data sent by the server, and sends other data requests to the server again.

Claims

1. The utility model provides an induction brazing controller that possesses Modbus TCP communication function which characterized in that: the induction brazing controller is connected with a client side and a TCP (transmission control protocol) through the Ethernet module, the Ethernet module receives request data sent by the client side and forwards the data to the induction brazing controller, the induction brazing controller identifies and judges the data and then sends the data needed by the client side to the client side through the Ethernet module, and the Modbus protocol and the Modbus TCP protocol are mutually converted through the Ethernet module, so that a group control function of networking between the client side and the induction brazing controller through the Ethernet is realized.

2. The induction brazing controller with the Modbus TCP communication function of claim 1, wherein: the Ethernet module comprises a serial port communication part which is communicated with the induction brazing controller, a protocol conversion part which is used for mutually converting a Modbus protocol and a Modbus TCP protocol, an MAC controller which is used for managing equipment addresses, a data transceiver and an RJ45 interface.

3. The induction brazing controller with the Modbus TCP communication function of claim 1, wherein: and the Ethernet module and the client and the Ethernet module and the induction soldering controller are connected by adopting Ethernet switches.

4. The induction brazing controller with the Modbus TCP communication function of claim 1, wherein: the induction brazing controller is a single chip microcomputer with a serial port communication function.