CN213659229U - Programmable controller with mobile communication function - Google Patents

Abstract

The utility model discloses a programmable controller with mobile communication function, which comprises a main control unit, an input/output unit, a network communication unit, an equipment communication unit and a power supply unit, wherein the main control unit is respectively in signal connection with the input/output unit, the network communication unit and the equipment communication unit, and the network communication unit comprises a wireless communication unit and a wired communication unit; the main control unit, the input and output unit, the network communication unit and the equipment communication unit are respectively connected with the power supply unit; the wireless communication unit is respectively in signal connection with an SIM card seat interface, a 4G antenna interface and a WIFI antenna interface; the wired communication unit is an Ethernet communication unit which is in signal connection with an Ethernet interface. The programmable controller integrates a mobile communication function, and can directly communicate signals acquired on site, operation result data and the running state of the programmable controller with platforms and systems such as an upper computer, a cloud platform, an Internet of things platform and the like through a mobile internet.

Description

Programmable controller with mobile communication function

Technical Field

The utility model relates to a controller technical field, especially a programmable controller with mobile communication function.

Background

The PLC in the industrial field is developed on the basis of an electric appliance control technology and a computer technology, takes a microprocessor as a core, and is a novel industrial control device integrating an automation technology, a computer technology and a communication technology (without a mobile communication technology), and the PLC has the functions of logic control, signal acquisition, output control, data processing, timing counting, communication (traditional physical hardware connection) and the like

The PLC is mainly composed of five main parts, namely a Central Processing Unit (CPU), a memory, an input/output interface (I/O module), a communication interface, a power supply and the like.

A Central Processing Unit (CPU) is a control center of the PLC, and is a core of the PLC to function as a neural center. It receives and stores the user program and data input from the programmer according to the function assigned by the PLC system program; the states of the power supply, memory, I/O, and watch dog timer are checked, and syntax errors in the user program can be diagnosed.

The memory is divided into a system program memory, a user program memory and a data memory, wherein the system program memory is a memory for storing system software; the user program memory is a memory for storing the PLC user program application; the data memory is used for storing intermediate states and information during the execution of the PLC program and is equivalent to the memory of the PC.

The interface between the PLC and the electrical circuit is accomplished via an input/output (I/O) section. The I/O module integrates the I/O circuit of the PLC, the input temporary storage reflects the state of an input signal, and the output point reflects the state of an output latch. The input module converts the electric signal into a digital signal to enter the PLC system, and the output module is opposite. The I/O is divided into modules such as switching value input (DI), switching value output (DO), analog value input (AI), analog value output (AO) and the like.

The main role of the communication interface is to enable data exchange (communication) between the PLC and an external device.

The power supply of PLC provides the working power supply for the PLC circuit, plays very important effect in entire system. A good and reliable power supply system is the most basic guarantee of the PLC.

Along with the progress of automation technology, computer technology, communication technology, the rise of thing networking and mobile internet, traditional PLC can't satisfy people's novel demand, and it will embody and need lay a large amount of network communication equipment when carrying out communication link at automation equipment process control's data and systems such as central control system, remote scheduling system and cloud platform system, if: optical fibers, and the like.

In addition, the traditional PLC has no Wifi and mobile communication functions, and cannot directly download wireless remote programs in an internet/mobile internet mode.

In view of the above circumstances, it is necessary to provide an MPLC (Mobile Programmable Logic Controller) including a conventional PLC function and also integrating Mobile communication and Wifi functions, which can directly communicate with an upper computer, a cloud platform, an internet of things equivalent platform, and a system through a Mobile internet, and can also perform user execution program downloading in a manner of direct connection through a Mobile phone APP.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a programmable controller with mobile communication function, namely a mobile programmable logic controller (MPLC for short), this programmable controller.

The utility model adopts the technical proposal that:

a programmable controller with a mobile communication function comprises a main control unit, an input/output unit, a network communication unit and an equipment communication unit, wherein the main control unit is in signal connection with the input/output unit, the network communication unit and the equipment communication unit respectively, and the network communication unit comprises a wireless communication unit and a wired communication unit.

Preferably, the device also comprises a FLASH storage unit, and the main control unit is in signal connection with the FLASH storage unit.

Preferably, the intelligent control system further comprises a power supply unit, wherein the main control unit, the input and output unit, the network communication unit and the equipment communication unit are respectively connected with the power supply unit, and the power supply unit is connected with a power supply input interface.

Preferably, the input/output unit includes analog input unit, analog output unit, switching value input unit, switching value output unit and PWM output unit, the main control unit is connected with analog input unit, analog output unit, switching value input unit, switching value output unit and PWM output unit signal respectively, analog input unit signal connection has analog input interface, analog output unit signal connection has analog output interface, switching value input unit signal connection has switching value input interface, switching value output unit signal connection has switching value output interface, PWM output unit signal connection has PWM output interface.

Preferably, the wireless communication unit is respectively connected with the SIM card socket interface, the 4G antenna interface and the WIFI antenna interface through signals.

Preferably, the wired communication unit is an ethernet communication unit, and the ethernet communication unit is in signal connection with an ethernet interface.

Preferably, the equipment communication unit includes RS485 communication unit, RS422 communication unit, RS232 communication unit, CAN communication unit and UART communication unit, the main control unit respectively with RS485 communication unit, RS422 communication unit, RS232 communication unit, CAN communication unit and UART communication unit signal connection, RS485 communication unit signal connection has the RS485 interface, RS422 communication unit signal connection has the RS422 interface, RS232 communication unit signal connection has the RS232 interface, CAN communication unit signal connection has the CAN interface, UART communication unit signal connection has the UART interface.

Preferably, the system further comprises an expansion bus unit, the main control unit is in signal connection with the expansion bus unit, and the expansion bus unit is in signal connection with an IIC communication interface and an SPI communication interface respectively.

Preferably, the intelligent power supply further comprises an indicator light unit, wherein the indicator light unit comprises a network state indicating circuit, a system state indicating circuit and an interface state indicating circuit, the main control unit is respectively in signal connection with the network state indicating circuit and the system state indicating circuit, and the switching value input unit, the switching value output unit and the PWM output unit are all provided with the interface state indicating circuit.

Preferably, the number of the ethernet communication units is 2, the number of the UART interfaces is 2, and the number of the IIC communication interfaces is 2.

The utility model has the advantages that:

1. the mobile communication function is integrated, and signals acquired on site, operation result data and the running state of the MPLC can be directly communicated with platforms and systems such as an upper computer, a cloud platform and an Internet of things platform through the mobile internet;

2. the user execution program of the MPLC can be downloaded remotely in an Internet/mobile Internet mode;

3. the WIFI function is integrated, a user execution program of the MPLC can be downloaded in a mobile phone APP mode, and a standard Internet of things protocol (such as MQTT) can be quickly docked with an Internet of things platform;

4. the design of low power consumption is adopted, and the solar energy and the battery pack can work normally without power coverage in a remote place and power supply by common solar energy or the battery pack;

5. the system has the functions of mobile communication, logic control, signal acquisition, output control, data processing, timing counting, communication and the like;

6. the MPLC integrates a serial bus function, and can acquire data and signals of instruments, sensors and other devices with a field bus function, and the MPLC stores, calculates and processes the acquired data and transmits the data through a mobile communication network or the internet;

7. the MPLC integrates the field bus function, can complete the system control of an automatic production line, an environmental control system, a water supply and drainage system, intelligent storage and the like in a field bus and remote IO mode, can automatically acquire process states of the data acquisition, data storage, logical operation, logical processing and other processes of the system, can generate data, and can transmit the data through a mobile communication network or the Internet;

8. the MPLC integrates a Modbus TCP communication function, can directly communicate with an energy management system, an electrical fire system, a fire-fighting power supply system and other systems with the Modbus TCP communication function, and can transmit communication data through a mobile communication network or the Internet;

9. the MPLC integrates a Can bus function, Can directly drive a frequency converter, a stepping motor, a servo motor and a robot controller with the Can bus function, and transmits the state, process data and running state of the controllers or drivers to a corresponding system or platform through a mobile communication network or the Internet;

10. the MPLC integrates an EtherNet bus function, can directly drive a frequency converter, a stepping motor, a servo motor and a robot controller with the EtherNet bus function, and transmits the states, process data and running states of the controllers or drivers through a mobile communication network or a corresponding system or platform of the Internet;

11. the MPLC has a back plate bus function (can be provided by an RS422 interface), and can expand corresponding communication modules, DI modules, DO modules, AI modules, AO modules, PWM modules and camera modules according to the size of a field system.

Drawings

Fig. 1 is a block diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a specific application state of the embodiment of the present invention;

fig. 3 is a schematic diagram of a pin structure of a main control unit according to an embodiment of the present invention;

fig. 4 is a schematic diagram of the structure of the rest of the pins of the main control unit in the embodiment of the present invention;

fig. 5 is a schematic circuit connection diagram of the reset circuit of the main control unit in the embodiment of the present invention;

fig. 6 is a schematic circuit connection diagram of the clock crystal oscillator of the main control unit according to the embodiment of the present invention;

fig. 7 is a schematic circuit connection diagram of a system crystal oscillator of the main control unit according to an embodiment of the present invention;

fig. 8 is a schematic circuit diagram of an EEPROM of the main control unit according to an embodiment of the present invention;

FIG. 9 is a schematic circuit diagram of a FLASH memory unit according to an embodiment of the present invention;

fig. 10 is a schematic diagram of the connection of the BOOT start circuit of the main control unit in the embodiment of the present invention;

fig. 11 is a schematic circuit diagram of a 5V 3A power supply unit of a power supply unit according to an embodiment of the present invention;

fig. 12 is a schematic circuit diagram of a 4.2V 2A power supply unit of a power supply unit according to an embodiment of the present invention;

fig. 13 is a schematic circuit diagram of a 3.3V 1A power supply unit of the power supply unit according to an embodiment of the present invention;

fig. 14 is a schematic circuit diagram of an analog input unit and an analog input interface according to an embodiment of the present invention;

fig. 15 is a schematic diagram of the circuit connection of the analog output unit and the analog output interface according to the embodiment of the present invention;

fig. 16 is a schematic circuit connection diagram of the switching value input unit and the switching value input interface according to the embodiment of the present invention;

fig. 17 is a schematic circuit connection diagram of the switching value output unit and the switching value output interface according to the embodiment of the present invention;

fig. 18 is a schematic circuit connection diagram of the PWM output unit and the PWM output interface according to the embodiment of the present invention;

fig. 19 is a schematic diagram of a portion of a pin structure of a wireless communication unit according to an embodiment of the present invention;

fig. 20 is a schematic diagram of the structure of the remaining pins of the wireless communication unit according to the embodiment of the present invention;

fig. 21 is a schematic diagram of a circuit connection for level conversion of a serial port of a wireless communication unit according to an embodiment of the present invention;

fig. 22 is a schematic circuit diagram of an SIM card socket interface according to an embodiment of the present invention;

FIG. 23 is a schematic diagram of the circuit connection of the 4G antenna interface in the embodiment of the present invention

Fig. 24 is a schematic circuit connection diagram of the WIFI antenna interface in the embodiment of the present invention;

fig. 25 is a schematic diagram of a BOOT pin connection of a wireless communication unit according to an embodiment of the present invention;

fig. 26 is a schematic circuit diagram of one of the wired communication units according to the embodiment of the present invention;

FIG. 27 is a schematic circuit diagram of an Ethernet interface connected to the wired communication unit of FIG. 27;

fig. 28 is a schematic circuit diagram of another wired communication unit according to an embodiment of the present invention;

FIG. 29 is a schematic circuit diagram of an Ethernet interface connected to the wired communication unit of FIG. 28;

fig. 30 is a schematic diagram of the circuit connection between the RS485 communication unit and the RS485 interface in the embodiment of the present invention;

fig. 31 is a schematic circuit diagram of an RS422 communication unit and an RS422 interface according to an embodiment of the present invention;

fig. 32 is a schematic circuit diagram of an RS232 communication unit and an RS232 interface according to an embodiment of the present invention;

fig. 33 is a schematic circuit diagram of a CAN interface of the CAN communication unit in the embodiment of the present invention;

fig. 34 is a schematic circuit diagram of a UART interface of the UART communication unit according to an embodiment of the present invention;

fig. 35 is a schematic circuit diagram of a network status indication circuit according to an embodiment of the present invention;

fig. 36 is a schematic circuit diagram of a system status indication circuit according to an embodiment of the present invention;

reference numerals: 1. the device comprises a main control unit, 2, a power supply unit, 3, an indicator light unit, 4, an expansion bus unit, 5, an analog input unit, 6, an analog output unit, 7, a switching value input unit, 8, a switching value output unit, 9, a PWM output unit, 10, a wireless communication unit, 11, a wired communication unit, 12, an RS485 communication unit, 13, an RS422 communication unit, 14, an RS232 communication unit, 15, a CAN communication unit, 16, a UART communication unit, 17 and a FLASH storage unit.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Examples

As shown in fig. 1, a programmable controller with a mobile communication function includes a main control unit 1, an input/output unit, a network communication unit and a device communication unit, where the main control unit 1 is in signal connection with the input/output unit, the network communication unit and the device communication unit, respectively, and the network communication unit includes a wireless communication unit 10 and a wired communication unit 11.

The programmable controller also comprises a FLASH storage unit 17, and the main control unit 1 is in signal connection with the FLASH storage unit 17.

The programmable controller also comprises a power supply unit 2, wherein the main control unit 1, the input/output unit, the network communication unit and the equipment communication unit are respectively connected with the power supply unit 2, and the power supply unit 2 is connected with a power supply input interface.

The input and output unit comprises an analog input unit 5 (i.e. AI), an analog output unit 6 (i.e. AO), a switching value input unit 7 (i.e. DI), a switching value output unit 8 (i.e. DO) and a PWM output unit 9, the main control unit 1 is respectively in signal connection with the analog input unit 5, the analog output unit 6, the switching value input unit 7, the switching value output unit 8 and the PWM output unit 9, the analog input unit 5 is in signal connection with the analog input interface, the analog output unit 6 is in signal connection with the analog output interface, the switching value input unit 7 is in signal connection with the switching value input interface, the switching value output unit 8 is in signal connection with the switching value output interface, and the PWM output unit 9 is in signal connection with the PWM output interface.

The wireless communication unit 10 is respectively connected with a SIM card socket interface, a 4G antenna interface and a WIFI antenna interface by signals.

The wired communication unit 11 is an ethernet communication unit, and the ethernet communication unit is connected with an ethernet interface through a signal.

The equipment communication unit includes RS485 communication unit 12, RS422 communication unit 13, RS232 communication unit 14, CAN communication unit 15 and UART communication unit 16, main control unit 1 respectively with RS485 communication unit 12, RS422 communication unit 13, RS232 communication unit 14, CAN communication unit 15 and 16 signal connection of UART communication unit, 12 signal connection of RS485 communication unit have the RS485 interface, 13 signal connection of RS422 communication unit have the RS422 interface, 14 signal connection of RS232 communication unit has the RS232 interface, 15 signal connection of CAN communication unit has the CAN interface, 16 signal connection of UART communication unit has the UART interface.

The programmable controller also comprises an expansion bus unit 4, the main control unit 1 is in signal connection with the expansion bus unit 4, and the expansion bus unit 4 is in signal connection with an IIC communication interface and an SPI communication interface respectively.

The programmable controller further comprises an indicator light unit 3, the indicator light unit 3 comprises a network state indicating circuit, a system state indicating circuit and an interface state indicating circuit, the main control unit 1 is in signal connection with the network state indicating circuit and the system state indicating circuit respectively, and the switching value input unit 7, the switching value output unit 8 and the PWM output unit 9 are all provided with the interface state indicating circuit.

The number of the Ethernet communication units is 2, the number of the UART interfaces is 2, and the number of the IIC communication interfaces is 2.

A specific application scenario of this embodiment is shown in fig. 2, an operator may communicate with the MPLC through a mobile internet or WIFI after passing through a local server or a cloud server by using an internet or a mobile internet through a mobile phone terminal, a WEB terminal, or another terminal, and communication content mainly includes a wireless remote download program to the MPLC. Of course, an operator can also directly communicate with the MPLC through the WIFI through the mobile phone end and the computer end.

The MPLC can receive input of various types of analog quantity and switching quantity, is used for collecting data signals and the like, can output the analog quantity, the switching quantity and PWM signals, is used for controlling normal work or stop work and the like of external equipment, can output linearly-changed voltages, can be connected with an expansion bus in an expansion mode through an RS422 interface of an RS422 communication unit, can be connected with more analog quantity input interfaces, analog quantity output interfaces, switching quantity input interfaces, switching quantity output interfaces and PWM output interfaces in an expansion mode through the expansion bus, and can be connected with equipment such as a camera.

The MPLC can be connected with external equipment such as instruments, sensors, frequency converters, stepping motor drivers, servo drivers, energy systems, electrical fire systems, fire fighting systems and the like through the equipment communication unit and corresponding interfaces, so that a remote automatic control function is realized. In addition, the MPLC CAN be connected with internet of things systems such as an automatic production line, an environmental control system ventilation or air conditioning system, a water supply and drainage system, intelligent storage and the like through a field bus (the ethernet interface of the ethernet communication unit, the RS485 interface of the RS485 communication unit or the CAN interface of the CAN communication unit are connected with the field bus), so that a remote automatic control function is realized, wherein the ethernet interface CAN be used as the field bus, CAN also be used for wired communication, and CAN also be used for expanding the ethernet interface through a connection switch.

The utility model discloses the main technical problem who solves is exactly that traditional PLC need lay a large amount of network communication equipment when carrying out communication link at automation equipment process control's data and systems such as central control system, remote scheduling system and cloud platform system, not only wastes time and energy, and is with high costs moreover. And adopt the utility model discloses the MPLC who proposes not only has contained traditional PLC function, has still integrateed mobile communication and WIFI function, and it can directly be put through mobile internet and host computer, cloud platform, thing networking equal platform, system's direct communication, and it can carry out user's executive program through the mode that cell-phone APP directly links and download. Meanwhile, the MPLC integration standard Internet of things protocol (such as MQTT) can be quickly docked with the Internet of things platform.

In this embodiment, specifically, the master control unit may adopt an STM8/STM32MCU controller or an ARM architecture microprocessor, etc., in this embodiment, an STM32F407VET6 is taken as an example of the master control unit, and circuit schematic diagrams thereof are shown in fig. 3 and 4, fig. 5 is a circuit diagram of a reset circuit of the master control unit, fig. 6 is a circuit diagram of a clock crystal oscillator of the master control unit, fig. 7 is a circuit schematic diagram of a system crystal oscillator of the master control unit, and fig. 8 is a circuit diagram of an EEPROM of the master control unit. In order to store system firmware and user data, a storage unit is also needed, generally, when the internal space of the main chip is large enough, a main control unit MCU or a CPU internal memory is adopted, and when the internal space is insufficient, an external memory, such as SPI FLASH, EMMC, NAND FLASH and the like, is adopted. The present embodiment adopts SPI FLASH W25Q64 as a FLASH memory cell, and the circuit diagram thereof is shown in fig. 9. Fig. 10 is a schematic connection diagram of a BOOT start circuit of the main control unit, and the following table shows BOOT setting information of STM32F407VET 6.

BOOT0	BOOT1	Starting mode
			0	X	User flash memory
1	0	System memory (ISP)
			1	1	Embedded SRAM

The default configuration of the embodiment is user FLASH memory, namely internal FLASH of the F407 chip, and when the space of the internal FLASH of the F407 chip is insufficient, the external FLASH storage unit can be enabled.

This MPLC still includes power supply unit, power supply unit includes 5V 3A power supply unit, 4.2V 2A power supply unit and 3.3V 1A power supply unit, 5V 3A power supply unit's power output is connected respectively to 4.2V 2A power supply unit and 3.3V 1A power supply unit's power input end, 3.3V 1A power supply unit's power output is connected to main control unit's power input end, 4.2V 2A power supply unit's power output is connected to network communication unit's power input end.

The power supply unit mainly converts external 24V or 12V power supply into voltage required by each unit in the programmable controller, the power supply part adopts TPS5430DDA power supply chips to reduce the voltage of +24V into 5V, and then the voltage of 5V is reduced into 4.2V and 3.3V through two power supply chips SY8089 and SY 8088. The 4.2V power supply network communication unit, the 5V and 3.3V power supply PLC main control unit, the equipment communication unit, the FLASH storage unit, the input and output unit, the indicator light unit and the like.

The circuit diagrams of the 5V 3A power supply unit, the 4.2V 2A power supply unit, and the 3.3V 1A power supply unit used in the present embodiment are shown in fig. 11 to 13, respectively.

The network communication unit comprises a wireless communication unit and a wired communication unit, and the wireless communication unit comprises at least one of 2G, 3G, 4G, 5G, WIFI and Bluetooth.

The communication unit is configured to upload data to the server, and taking 4G, WIFI as a wireless communication unit and the ethernet unit as a wired communication unit as examples, this embodiment employs an AIR724UG (4G + WIFI) module, the connection relationship between the circuit and each interface is shown in fig. 19-24, fig. 25 is a BOOT pin connection circuit diagram of the AIR724UG (4G + WIFI) module, and the connection relationship between the ethernet unit and the ethernet interface is shown in fig. 26-29.

The analog input unit and the switching value input unit mainly detect a change in an external input signal, a change in the high or low level of the external signal (which may be also understood as a digital signal or a switching signal), or a slight change in the voltage of the external signal (which may be also understood as an analog signal). The circuit connection relationship between the analog input unit and the analog input interface is shown IN fig. 14, and the circuit connection relationship between the switching value input unit and the switching value input interface is shown IN fig. 16 (the MPLC may integrate multiple switching value input units, which are respectively connected to one of the pins IN0-IN7 of the main control unit, and X0 IN fig. 16 is the switching value input interface).

The analog quantity output unit and the switching quantity output unit are mainly used for controlling the external equipment to normally work or stop working and the like by the MPLC main control unit according to a control signal output by a program which is programmed and downloaded to the MPLC by a user. The present embodiment can use a relay as an output control to switch on/off an external signal (which can be understood as an output switching value), or to control other external devices (which can be understood as an output analog value) by changing voltage and current. Fig. 15 shows a circuit connection relationship between the analog output unit and the analog output interface, and fig. 17 shows a circuit connection relationship between the switching value output unit and the switching value output interface (the MPLC may integrate multiple switching value output units, which are respectively connected to OUT0, OUT1 or other available pins of the main control unit, and Y0 in fig. 17 is a switching value output interface).

As shown in fig. 18, the PWM output unit mainly outputs a control signal to control the external device to operate normally or stop according to a program downloaded to the MPLC programmed by a user. The MPLC may design multiple PWM output units, which are respectively and correspondingly connected to pins (e.g., PD11-PD15) of the main control unit, wherein the PWM _ OUT1 is a PWM output interface.

The MPLC main control unit communicates with an external device in a wired or wireless manner through a device communication unit, and this embodiment mainly uses a wired manner, and specifically includes an RS485 communication unit, an RS422 communication unit, an RS232 communication unit, a CAN communication unit, a UART communication unit, and the like, where a circuit connection relationship between the RS485 communication unit and the RS485 interface is shown in fig. 30, a circuit connection relationship between the RS422 communication unit and the RS422 interface (which adopts a full-duplex mode and is compatible with an RS 4854W mode) is shown in fig. 31, a circuit connection relationship between the RS232 communication unit and the RS232 interface is shown in fig. 32, a circuit connection relationship between the CAN interface of the CAN communication unit is shown in fig. 33, and a circuit connection relationship between the UART communication unit and the UART interface is shown in fig. 34.

In order to enhance the practicability of the MPLC, the MPLC further has an expansion bus unit for providing more interfaces to control more devices, so as to fully meet the actual use requirements.

The MPLC also comprises an indicator light unit, wherein the state indicating unit comprises a network state indicating circuit and a system state indicating circuit, and is mainly used for indicating the working state of the system, the network condition, the input and output states of the interface and the like, so that the installation and debugging of a user, the working state of monitoring equipment and the like are facilitated. The present embodiment uses a light emitting LED for indication, wherein the circuit connection relationship of the network status indicating circuit is shown in fig. 36, and the circuit connection relationship of the system status indicating circuit is shown in fig. 36.

The above-mentioned figures clearly and specifically record the connection relationship of each circuit, which is clear to those skilled in the art and will not be described in detail.

By adopting the programmable controller of the embodiment, the communication unit can be conveniently accessed to a local area network, the internet and a mobile internet, a third-party device or system can be accessed to the PLC main control unit through the communication unit, the data of the third-party device or system is transmitted to the PLC main control unit, and the result of peripheral operation of the peripheral data received by the PLC main control unit can be transmitted to the third-party device or system through the communication unit. The PLC main control unit can also transmit the result of the edge operation and the data acquired on site to the cloud platform through the wireless communication module, and the cloud platform can transmit the instruction and the operation result to the PLC main control unit through the wireless communication module. The user can access the PLC main control unit by utilizing the terminal equipment through the wireless communication module, then the compiled program is pushed and downloaded to the PLC main control unit, and the PLC main control unit can feed back the downloading state to the user terminal equipment through the wireless communication module.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (7)

1. A programmable controller with mobile communication function is characterized by comprising a main control unit (1), an input/output unit, a network communication unit, a device communication unit and a power supply unit (2), wherein the main control unit (1) is respectively in signal connection with the input/output unit, the network communication unit and the device communication unit, and the network communication unit comprises a wireless communication unit (10) and a wired communication unit (11); the main control unit (1), the input/output unit, the network communication unit and the equipment communication unit are respectively connected with the power supply unit (2), and the power supply unit (2) is connected with a power supply input interface; the wireless communication unit (10) is in signal connection with an SIM card seat interface, a 4G antenna interface and a WIFI antenna interface respectively; the wired communication unit (11) is an Ethernet communication unit, and the Ethernet communication unit is in signal connection with an Ethernet interface.

2. The programmable controller with mobile communication function according to claim 1, characterized in that it further comprises a FLASH memory unit (17), said main control unit (1) being in signal connection with the FLASH memory unit (17).

3. The programmable controller with mobile communication function according to claim 2, wherein the input/output unit comprises an analog input unit (5), an analog output unit (6), a switching value input unit (7), a switching value output unit (8) and a PWM output unit (9), the main control unit (1) is respectively connected with the analog input unit (5), the analog output unit (6), the switching value input unit (7), the switching value output unit (8) and the PWM output unit (9) through signals, the analog input unit (5) is connected with the analog input interface through signals, the analog output unit (6) is connected with the analog output interface through signals, the switching value input unit (7) is connected with the switching value input interface through signals, the switching value output unit (8) is connected with the switching value output interface through signals, the PWM output unit (9) is connected with a PWM output interface through signals.

4. The programmable controller with mobile communication function according to claim 3, wherein the device communication unit comprises an RS485 communication unit (12), an RS422 communication unit (13), an RS232 communication unit (14), a CAN communication unit (15) and a UART communication unit (16), the main control unit (1) is respectively in signal connection with the RS485 communication unit (12), the RS422 communication unit (13), the RS232 communication unit (14), the CAN communication unit (15) and the UART communication unit (16), the RS485 communication unit (12) is in signal connection with the RS485 interface, the RS422 communication unit (13) is in signal connection with the RS422 interface, the RS232 communication unit (14) is in signal connection with the RS232 interface, the CAN communication unit (15) is in signal connection with the CAN interface, and the UART communication unit (16) is in signal connection with the UART interface.

5. The programmable controller with mobile communication function according to claim 4, further comprising an expansion bus unit (4), wherein the main control unit (1) is in signal connection with the expansion bus unit (4), and the expansion bus unit (4) is in signal connection with an IIC communication interface and an SPI communication interface respectively.

6. The programmable controller with mobile communication function according to claim 5, further comprising an indicator light unit (3), wherein the indicator light unit (3) comprises a network status indication circuit, a system status indication circuit and an interface status indication circuit, the main control unit (1) is respectively connected with the network status indication circuit and the system status indication circuit through signals, and the switching value input unit (7), the switching value output unit (8) and the PWM output unit (9) are respectively provided with the interface status indication circuit.

7. The programmable controller with mobile communication function of claim 6, wherein the number of ethernet communication units is 2, the number of UART interfaces is 2, and the number of IIC communication interfaces is 2.

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