CN218512834U

CN218512834U - PLC remote program downloading device

Info

Publication number: CN218512834U
Application number: CN202221732694.4U
Authority: CN
Inventors: 斯晓强; 窦建中
Original assignee: Huzhou Institute Of International Innovation Harbin University Of Technology Robot
Current assignee: Huzhou Institute Of International Innovation Harbin University Of Technology Robot
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2023-02-21
Anticipated expiration: 2032-07-05

Abstract

The utility model discloses a PLC remote program downloading device, which comprises a microcontroller; the microcontroller receives data transmitted by the terminal equipment through the network module; the microcontroller is communicated with the PLC through an RS232 or RS422 or RS485 interface module; the microcontroller transmits the received terminal equipment data through a serial port, converts the terminal equipment data into interface protocol format data of an RS232/RS422/RS485 interface module through a serial port conversion chip and then transmits the interface protocol format data to the PLC; the data of the PLC is converted into serial port data through the conversion chip and transmitted to the microcontroller. The utility model receives the data of the terminal equipment by setting the microcontroller and transmits the data to the PLC; the operator does not need to arrive at the site, and can download the PLC program remotely. The convenience is greatly improved, the working efficiency is increased, the time cost and the operation and maintenance cost are reduced, and additional cost is increased because network equipment is not additionally arranged for network communication.

Description

PLC remote program downloading device

Technical Field

The utility model belongs to the technical field of industrial equipment, especially, relate to a PLC remote program downloading equipment.

Background

A Programmable Logic Controller (PLC) is a digital arithmetic operating electronic system designed specifically for use in an industrial environment. It uses a programmable memory, in which the instructions for implementing logical operation, sequence control, timing, counting and arithmetic operation are stored, and utilizes digital or analog input and output to control various mechanical equipments or production processes.

At present, when program downloading or debugging is carried out on Mitsubishi PLC, an operator needs to go to the site and connect the Mitsubishi PLC in a physical connection mode to download the program. Not only is inconvenient, but also increases the time cost and the operation and maintenance cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a PLC remote program downloading device, which receives the data of a terminal device by arranging a microcontroller and transmits the data to a PLC; an operator does not need to arrive at the site, and can download the PLC program remotely; the convenience is greatly improved, the working efficiency is increased, and the time cost and the operation and maintenance cost are reduced; the gateway Ethernet has various communication modes and high flexibility. The optimal mode can be selected according to the field environment, and additional network equipment does not need to be additionally arranged for network communication, so that additional cost is increased.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a PLC remote program downloading device, which comprises a microcontroller; the microcontroller is also electrically connected with the PLC, the power supply module, the indicator light module and the USB module respectively; the microcontroller receives data transmitted by the terminal equipment through the network module; the microcontroller is communicated with the PLC through an RS232 or RS422 or RS485 interface module; the microcontroller transmits the received terminal equipment data through a serial port, converts the terminal equipment data into interface protocol format data of an RS232/RS422/RS485 interface module through a serial port conversion chip and then transmits the interface protocol format data to the PLC; and the data of the PLC is converted into serial port data through the conversion chip and transmitted to the microcontroller.

Further, the power module supplies power for the microcontroller, and the microcontroller adopts the MCU of which the model is STM 32.

Furthermore, the terminal equipment adopts a cloud server, and PLC programming software is installed in the terminal equipment.

Further, the network module comprises a network port module, a WIFI module, a 4G module and a 5G module.

Further, the network port module adopts a W5500 network protocol stack chip; the microcontroller is connected with a W5500 network protocol stack chip through an SPI interface and then is converted into an RJ45 interface through a transformer chip.

Further, the microcontroller is connected with the 4G module and the WIFI module through a UART interface.

Further, the microcontroller is connected with the 5G module through a USB interface.

Further, the microcontroller controls an indicator light module through the GPIO pin, and the indicator light module is used for displaying the working state of the equipment.

Further, serial port data of the microcontroller is converted into USB data through a CH340 chip.

The utility model discloses following beneficial effect has:

the utility model receives the data of the terminal device by setting the microcontroller and transmits the data to the PLC; the operator does not need to arrive at the site, and can remotely download the PLC program. The convenience is greatly improved, the working efficiency is increased, and the time cost and the operation and maintenance cost are reduced. The gateway Ethernet has various communication modes and high flexibility. The optimal mode can be selected according to the field environment, and additional network equipment does not need to be additionally arranged for network communication, so that additional cost is increased.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a system block diagram of a PLC remote program download device;

FIG. 2 is a circuit diagram of a PHY chip;

fig. 3 is a circuit diagram of the WIFI module.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, the present invention relates to a PLC remote program downloading device, which includes a microcontroller; the microcontroller adopts an MCU with the model number of STM 32;

the microcontroller is also electrically connected with the PLC, the power supply module, the indicator light module and the USB module respectively; the power supply module supplies power to the microcontroller; the microcontroller controls the indicator light module through the GPIO pin, and the indicator light module is used for displaying the working state of the equipment; the LED indicating lamps are 5-clock indicating lamps with different colors, and the different colors respectively represent different meanings, including power supply states, equipment running states, equipment cloud-up states, data acquisition indication and equipment faults;

serial port data of the microcontroller is converted into USB data through a CH340 chip; the system is used for configuring configuration information such as acquisition parameters; the PC is convenient to debug by connecting the MiniUSB line with the gateway equipment through the MiniUSB line by arranging the USB module;

the microcontroller receives data transmitted by the terminal equipment through the network module; the network module comprises a network port module, a WIFI module, a 4G module and a 5G module, the MCU is connected with the PHY chip LAN8720 through an RMII interface and then is converted into an RJ45 interface which is a common network cable socket in life through a transformer chip; the network port module adopts a W5500 network protocol stack chip; the microcontroller is connected with a W5500 network protocol stack chip through an SPI interface and is converted into an RJ45 interface through a transformer chip, the microcontroller is connected with a 4G module and a WIFI module through a UART interface, and the microcontroller is connected with a 5G module through a USB interface; the terminal equipment adopts a cloud server, and PLC programming software is installed in the terminal equipment;

the microcontroller is communicated with the PLC through an RS232 or RS422 or RS485 interface module; the corresponding module can be selected according to the communication protocol format supported by the PLC; the PLC is connected with a data line of the RS232 or RS422 or RS485 interface module through a PLC programming port;

the microcontroller transmits the received terminal equipment data through a serial port, converts the terminal equipment data into interface protocol format data of an RS232/RS422/RS485 interface module through a serial port conversion chip and then transmits the interface protocol format data to the PLC; the data of the PLC is converted into serial port data through a conversion chip and transmitted to the microcontroller;

the staff transmits to the microcontroller through the program data of PLC programming software on the terminal equipment, and the microcontroller writes the data into PLC after receiving the program data.

As shown in fig. 2, the RMII interface of the microcontroller is connected to the RMII interface pin circuit of the PHY chip LAN 8720.

The 50MHz crystal oscillator Y2 provides stable frequency signals for chips and communication protocols.

Pins

20,21,22 and 23 are connected with a voltage conversion chip, namely an RJ45 network port. 2,3 pins are connected with pins of a status indicator lamp of the network port. The chip is powered by 3.3V.

As shown in fig. 3, the present embodiment is a WIFI module circuit. And the microcontroller controls an enabling pin and a resetting pin of the WIFI chip through the GPIO pin. The microcontroller sends and receives instructions to the WIFI chip through the UART interface, and wireless transmission of data is realized through the WIFI chip.

In the description of the present specification, reference to the description of "one embodiment," "an example," "a specific example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A PLC remote program downloading device is characterized by comprising a microcontroller;

the microcontroller is also electrically connected with the PLC, the power supply module, the indicator light module and the USB module respectively;

the microcontroller receives data transmitted by the terminal equipment through the network module;

the microcontroller is communicated with the PLC through an RS232 or RS422 or RS485 interface module;

the microcontroller transmits the received terminal equipment data through a serial port, converts the terminal equipment data into interface protocol format data of an RS232/RS422/RS485 interface module through a serial port conversion chip and then transmits the interface protocol format data to the PLC; and the data of the PLC is converted into serial port data through the conversion chip and transmitted to the microcontroller.

2. The PLC remote program downloading device of claim 1, wherein the power module supplies power to a microcontroller, and the microcontroller is an MCU of type STM 32.

3. The PLC remote program downloading device of claim 1, wherein the terminal device adopts a cloud server, and PLC programming software is installed in the terminal device.

4. The PLC remote program downloading device of claim 1, wherein the network module comprises a portal module, a WIFI module, a 4G module and a 5G module.

5. The PLC remote program downloading device of claim 4, wherein the network port module adopts a W5500 network protocol stack chip; the microcontroller is connected with a W5500 network protocol stack chip through an SPI interface and then is converted into an RJ45 interface through a transformer chip.

6. The PLC remote program downloading device of claim 4, wherein the microcontroller is connected with the 4G module and the WIFI module through a UART interface.

7. The PLC remote program downloading device of claim 4, wherein the microcontroller is connected to the 5G module through a USB interface.

8. The PLC remote program downloading device of claim 1, wherein the microcontroller controls an indicator light module through a GPIO pin, and the indicator light module is used for displaying the working state of the device.

9. The PLC remote program downloading device of claim 1, wherein serial port data of the microcontroller is converted into USB data through a CH340 chip.