CN201583832U - Novel portable PLC programming device - Google Patents

Abstract

The utility model relates to a novel portable programming device, which comprises a main control module, a memory module, a power management module, a communication interface module, a human-computer interface module and a CAN interface module, the system is based on the main control module to carry out multi-task and communication management, PLC user program editing and processing as well as monitoring and debugging; the power management module realizes power supply selection; the memory module stores system and user programs, data and dynamic operating space; the communication interface module extends UART and USB interfaces; the human-computer interface module provides an interactive interface; the CAN interface module programming device can connect any CAN nodes into a CAN field bus; and the main control module is respectively connected with the other five modules, the power management module and the communication interface module are respectively connected with the a PLC host, and the communication interface module is connected with an upper computer. The utility model can work offline, directly communicates with the upper computer, and debugs, operates and monitors the long-distance PLC host user program.

Description

New Portable PLC Programming Device

Technical field:

The utility model relates to a programming device, in particular to a PLC (programmable logic controller) programming monitoring device.

Background technique:

The programming device is an important peripheral device of PLC (programmable logic controller, hereinafter referred to as PLC). There are two main types of current PLC programming devices: one is a computer with special programming software, and the other is a special portable handheld programmer. ; The first type of PLC programming device can edit, insert, and modify PLC user programs in offline mode, but can edit, insert, modify user programs and On-site monitoring, debugging and other operations; the second type of portable handheld programmer has the characteristics of small size, light weight, easy to carry, suitable for on-site programming and debugging, but the programming device must be connected to the fixed communication port of the PLC equipment through a special cable to edit, Insert and modify user programs and debug on-site PLC equipment; moreover, its working power is provided by PLC dedicated interface, so it cannot be used in offline mode. On the other hand, due to the limitation of the internal memory capacity of the programming device, only one debugging program can be stored in the programming device for each on-site debugging, and the previous user program cannot be saved, and the new user program will overwrite the existing program in the programming device , when debugging the modified program is unsuccessful, other recording tools are needed to restore the original user program. These two types of programming devices can communicate with PLC equipment respectively, but they cannot communicate directly with each other. These two types of programming devices all need a special communication cable to be connected to the special interface of the PLC device during operation, and can only be operated near the PLC host device being debugged. Since the control components of many controlled devices are located far away from the PLC host on the production line, the control effect cannot be seen during debugging, and the PLC input and output status and control effect can only be displayed by other devices of the PLC host. Inconvenient for debugging.

Utility model content:

The purpose of this utility model is to provide a novel portable PLC programming device based on an embedded ARM microprocessor. It can carry out remote monitoring and debugging of the PLC host through the CAN bus, and can directly communicate with the upper computer, and can independently supply power in the off-line mode to realize off-line compilation and debugging of user PLC programs, so as to overcome the shortcomings of the above-mentioned existing technologies place.

In order to solve the above-mentioned technical problems, the technical solution adopted in the utility model is: a novel portable PLC programming device, comprising a main control module I, a memory module II, a power management module III, a man-machine interface module V and a CAN interface module VI;

Described main control module 1 comprises embedded ARM microprocessor, real-time clock circuit, reset circuit, JTAG debugging interface circuit and internal rechargeable battery, and real-time clock circuit, reset circuit, JTAG debugging interface circuit and internal rechargeable battery are respectively connected with embedded ARM The microprocessors are connected; the control core of the main control module I is an embedded microprocessor ARM, and its function is to realize the adjustment and control of other components in the main control module I; the reset circuit provides a reset signal for the system circuit; the JTAG debugging interface The circuit provides a debugging interface and is connected with an external circuit to realize the debugging of the hardware and software of the programming device; the real-time clock circuit provides time and date information; the internal rechargeable battery provides 5V power for the programming device to realize offline work; the main control module I has functions for other modules Provide functions such as adjustment control and data processing, processing interrupt services of peripheral modules, scheduling and processing the running status of each module, and driving hardware modules. The programming device builds an embedded real-time operating system in the main control module I for multi-task management and communication management. , to realize the functions of editing and processing PLC user programs and monitoring the running status of PLC.

Described memory module II comprises Nor FLASH memory, Nand FLASH memory and SDRAM memory; Nor FLASH memory, Nand FLASH memory and SDRAM memory are directly connected with the embedded ARM microprocessor of main control module I respectively, realizes ARM microprocessor to memory Operation control, Nor FLASH memory stores the embedded software system program of the programming device, Nand FLASH memory stores PLC user programs and data, and SDRAM memory provides space for system operation and communication data processing.

The power management module III is the main module to realize power selection and power management, and it has two structural forms: a common structure and a simplified structure:

The common structure of described power management module III comprises: external power interface, voltage conversion circuit and USB charging controller, USB charging controller and external power interface are respectively connected with the embedded ARM microprocessor of main control module I by voltage conversion circuit The voltage conversion circuit is also connected with the internal rechargeable battery of the main control module I, and the power management module III provides an external power supply interface, converts the DC voltage, or obtains power from the USB interface of the upper computer to charge the internal rechargeable battery or directly convert for later use by the system.

The simplified structure of the power management module III includes: an external power interface and a voltage conversion circuit, the external power interface is connected with the embedded ARM microprocessor of the main control module I through a voltage conversion circuit, and the voltage conversion circuit is also connected with the main The internal rechargeable battery of the control module 1 is connected, the external power supply interface provides an external DC power input, and the voltage conversion circuit converts the DC voltage, charges the internal rechargeable battery or directly converts it for use by the programming device.

The man-machine interface module V provides an interactive interface for the user and the programming device.

The CAN interface module VI provides a communication interface for data exchange with a long-distance PLC host when the programming device is on-line, thereby connecting any CAN node on the industrial site to access the CAN field bus, and realizing monitoring of the remote PLC host at the monitoring site. program debugging and operation.

The main control module I is connected with the memory module II, the power management module III, the man-machine interface module V and the CAN interface module VI respectively, the power management module III is connected with the PLC host, and the CAN interface module VI is connected with the PLC host through the CAN bus Connect with the host computer.

Its further technical scheme is:

The programming device also includes a communication interface module as an expansion interface of the programming device. The communication interface module also has two structural forms: a common structure and a simplified structure:

The first kind, the communication interface module IV of described common structure comprises universal asynchronous serial interface UART and USB interface, and described universal asynchronous serial interface UART is respectively connected with the embedded ARM microprocessing of host computer, PLC main frame and main control module 1 The USB interface is respectively connected with the host computer, the power management module III and the embedded ARM microprocessor of the main control module I, so as to realize the data communication between the main control module I and the PLC host, and the direct connection between the main control module I and the upper computer. data communication.

The second kind, the communication interface module IVa of described simplified structure only has universal asynchronous serial interface UART interface, described universal asynchronous serial interface UART is respectively connected with the embedded ARM microprocessing of host computer, PLC main frame and main control module 1 The device is connected to realize the data communication between the main control module I and the PLC host, and the data communication between the main control module I and the host computer directly.

Due to the adoption of the above structure, the novel portable PLC programming device of the present utility model has the following beneficial effects:

1. It can realize the remote operation of the PLC host:

The utility model adopts the field bus mode based on the CAN field bus, the user can select a suitable position on the controlled device to set the CAN bus node, and the programming device can be connected to the CAN bus node through the CAN interface module VI to conveniently access the CAN field Bus, the communication data is processed by the main control module 1, realizing the operation of the portable PLC programming device of the present utility model to the long-distance PLC main frame at the monitoring site.

2. Offline working mode can be realized:

The power management module III in the programming device of the utility model provides users with three power supply modes to choose from: the first power supply mode is to obtain DC voltage from the PLC host through the external power supply interface; in the second power supply mode, the programming device is sent and received by USB The controller obtains working DC power through the USB interface of the upper computer, and in this mode, it is used by the system through the USB charging controller and voltage conversion circuit; the third power supply mode is provided by the 5V internal rechargeable battery of the programming device, and the programming device relies on The internal 5V power supply realizes offline work; since the utility model can adopt multiple power supply modes, the first two power supply modes can be used to charge the internal rechargeable battery.

3. Strong function, easy to carry:

The embedded ARM microprocessor adopted in the utility model constructs an embedded real-time operating system for multi-task real-time scheduling processing, which not only provides multiple functions such as program compilation, file processing, monitoring, and debugging, but also has fast computing speed and system The characteristics of low power consumption and light weight make it easy for the operator to carry, and it is suitable for debugging on the industrial site.

4. Abundant communication interfaces:

The utility model has a CAN bus interface, an asynchronous serial communication interface UART and a USB interface; the CAN bus interface provides a communication interface for data exchange with a remote PLC host computer when the programming device is working online, thereby connecting any CAN node on the industrial site to access The CAN field bus realizes the program debugging and operation of the remote PLC mainframe at the monitoring site; through the CAN bus and the UART asynchronous serial communication interface, it can be directly connected to the host computer, and the host computer can be used to edit the user program and download it to the SDRAM of the utility model In the memory, the user saves the user program in the SDRAM to the FLASH memory by inputting instructions; the user can also directly connect the PLC host through the universal asynchronous serial communication interface UART of the programming device to perform related operations; the utility model connects the host through the USB interface The computer realizes the transmission and storage of a large amount of data, and obtains power from the USB interface of the upper computer for the use of the programming device or charging of the internal rechargeable battery. Various communication interfaces of the utility model enable the user to communicate with the upper computer and other equipment conveniently.

Five, the system is cost-effective:

The utility model adopts an embedded ARM microprocessor and a CAN bus module VI, which not only has the main functions of an existing ordinary handheld PLC programmer, but also supports online and offline working modes, and is connected through the CAN bus node on the industrial site. The CAN bus realizes the operation of the long-distance PLC mainframe at the control site, and can also directly communicate with the upper computer, which improves the scope of use of the new portable PLC programming device of the utility model; because the software system of the utility model can be easily programmed through the JTAG interface , Especially the application function software including the compilation and processing software is debugged and updated, which optimizes the performance of the programming device and realizes the upgrade and expansion of the software system under the original hardware circuit conditions. Therefore, it has high cost performance and scalability.

Description of drawings:

Fig. 1: the system structural diagram of the novel portable PLC programming device of embodiment one;

Fig. 2: the hardware connection block diagram of the novel portable PLC programming device of embodiment one;

Fig. 3: the system structural diagram of the novel portable PLC programming device of the simplification of embodiment two;

Fig. 4: the hardware connection block diagram of the novel portable PLC programming device of the simplification of embodiment two;

Fig. 5: the system structural diagram of the novel portable PLC programming device of the simplification of embodiment three;

Fig. 6: the hardware connection block diagram of the novel portable PLC programming device of the simplification of embodiment three;

Fig. 7: A flow chart of the system operation of the new portable PLC programming device of the present invention.

In the picture:

I-main control module, II-memory module, III-power management module, IIIa-power management module with simplified structure, IV-communication interface module, IVa-communication interface module with simplified structure, V-man-machine interface module, VI- CAN interface module;

1-embedded ARM microprocessor, 2-real-time clock circuit, 3-reset circuit, 4-JTAG debugging interface circuit, 5-NorFLASH memory, 6-Nand FLASH memory, 7-SDRAM memory, 8-external power supply interface, 9 -Voltage conversion circuit, 10-USB charging controller, 11-CAN controller, 12-CAN transceiver, 13-LCD liquid crystal display part, 131-LCD liquid crystal display, 132-LCD controller, 14-keyboard part, 141 -Keyboard controller, 142-matrix keyboard, 15-universal asynchronous serial interface UART, 151-serial communication controller, 152-RS-232 level converter, 153-data transceiver, 16-USB interface, 161- USB device controller, 162-USB transceiver, 17-host computer, 18-PLC host, 19-internal rechargeable battery.

The meanings of the abbreviations in the text are as follows:

PLC-Programmable Logical Controller, programmable logic controller, referred to as programmable controller;

CAN-Controller Area Network, Controller Area Network, an industrial field bus;

ARM-Advanced RISC Machines, a microprocessor;

Nor FLASH-a non-volatile flash memory technology, here refers to the flash memory using Nor FLASH technology;

Nand FLASH-a non-volatile flash memory technology, here refers to the flash memory using Nand FLASH technology;

SDRAM-Synchronous Dynamic Random Access Memory, synchronous dynamic random access memory;

UART-Universal Asynchronous Receiver/Transmitter, universal asynchronous transceiver transmitter;

USB-Universal Serial Bus, universal serial bus;

JTAG-Joint Test Action Group, an international standard test protocol;

LCD-Liquid Crystal Display, liquid crystal display;

SPI-Serial Peripheral Interface, synchronous serial peripheral bus interface.

Detailed ways:

Embodiment one:

A novel portable PLC programming device, as shown in Figure 1, this programming device comprises main control module I, memory module II, power management module III, communication interface module IV, man-machine interface module V and CAN interface module VI;

The main control module I has functions such as providing control instructions and data processing for other modules of the system, processing interrupt services of peripheral modules, scheduling and processing the running status of each module, and driving hardware modules. The programming device builds an embedded real-time operation in the main control module I System, carry out multi-task management and communication management, realize the function of editing, processing PLC user program and monitoring PLC running state; As shown in Figure 2, main control module 1 comprises embedded ARM microprocessor 1, real-time clock circuit 2, reset Circuit 3, JTAG debugging interface circuit 4 and internal rechargeable battery 19. Real-time clock circuit 2, reset circuit 3, JTAG debugging interface circuit 4 and internal rechargeable battery 19 are connected with embedded ARM microprocessor 1 respectively; Embedded ARM microprocessor 1 is the control core of main control module 1, realizes to master The adjustment and control of other components in the control module 1; Reset circuit 3 provides reset signal for embedded ARM microprocessor 1; JTAG debugging interface circuit 4 provides debugging interface and connects with external circuit to realize the debugging of programming device hardware and software; The clock circuit 3 provides information such as time and date; the internal rechargeable battery 19 provides a 5V power supply for the programming device, and the programming device relies on the internal 5V power supply to realize offline work.

Memory module II is used for storing embedded software system, user program and data and provides dynamic operation space for data processing; Memory module II comprises Nor FLASH memory 5, Nand FLASH memory 6 and SDRAM memory 7, described Nor FLASH memory 5, Nand FLASH memory 6 and SDRAM memory 7 are directly connected with the embedded ARM microprocessor 1 of main control module 1 respectively, realize the operation control of ARM microprocessor 1 to memory module II; Wherein, Nor FLASH memory 5 stores the embedded ARM microprocessor of programming device Software system program, Nand FLASH memory 6 stores PLC user program and data, SDRAM memory 7 provides space for system operation and communication data processing. The PLC user program storage space can store multiple PLC user programs at the same time. When in use, it can store the program currently being edited, the program that has been debugged, and other programs and data; the data that the programming device communicates with the CAN bus or with the host computer 17 It is first transferred to the SDRAM memory 7, and the user writes the data in the SDRAM memory 7 into the Nand FLASH memory 6 through the keyboard part 14. The SDRAM memory 7 provides running space for system operation and communication data processing.

The power management module III is the main module to realize power selection and power management. Its function is to provide an external power interface, convert DC voltage, obtain power from the USB interface of the host computer 17 to charge the internal rechargeable battery 19 or provide programming after direct conversion Device uses; Power management module III comprises external power supply interface 8, voltage conversion circuit 9 and USB charging controller 10, and USB charging controller 10 and external power supply interface 8 pass voltage conversion circuit 9 and the embedded ARM microprocessor of main control module 1 respectively The processor 1 is connected; the external power interface 8 can make the programming device realize the function of power acquisition by connecting with the PLC host 18, which is the same as the function that a special-purpose portable handheld programmer obtains power from the PLC host through a dedicated interface; through USB charging The controller 10 can obtain the DC power from the USB interface of the host computer 17 for the use of the voltage conversion circuit 9, and can also charge the internal rechargeable battery 19 of the programming device; Converted to different voltages for use by the embedded ARM microprocessor 1 and each external module; the DC voltage from the external power supply interface 8 is used by the system through the voltage conversion circuit 9; the DC voltage from the USB transceiver passes through the USB charging controller 10, The voltage conversion circuit 9 is used by the system; the voltage conversion circuit 9 has two outputs, one output is used to charge the internal rechargeable battery 19, and the other output is used as a system power supply. Because the internal rechargeable battery 19 of 5V is provided inside the programming device, it can provide power for the programming device when working offline, and can also charge the internal rechargeable battery 19 when using an external power supply, which improves the applicability of the programming device.

Communication interface module IV is as programming device expansion interface, and its effect is to realize the data communication with main control module 1; This communication interface module IV comprises universal asynchronous serial interface UART15 and USB interface 16, and described universal asynchronous serial interface UART15 includes serial Line communication controller 151, RS-232 level converter 152 and data transceiver 153, data transceiver 153 is connected with serial communication controller 151 through RS-232 level converter 152, serial communication controller 151 and host The embedded ARM microprocessor 1 of control module 1 is connected to control data transmission, and RS-232 level shifter 152 connects serial communication controller 151 to be responsible for level conversion, and data transceiver 153 is responsible for receiving and sending transmission data; Interface 16 comprises USB device controller 161 and USB transceiver 162, and USB device controller 161 and USB transceiver 162 are mutually connected, and USB device controller 161 is connected with the embedded ARM microprocessor 1 of main control module 1 to control data transmission , the USB transceiver 162 is responsible for sending and receiving data, and is connected with the USB charging controller 10 of the power management module III, and the universal asynchronous serial interface UART15 and the USB interface 16 are also connected with the host computer 17 to realize data interaction with the host computer 17 , the main control module 1 communicates directly with the upper computer 17 through the asynchronous serial interface UART15, and can also communicate with the PLC host 18 through the universal asynchronous serial interface UART15; the main control module 1 can also use the USB interface 16 and the USB interface of the upper computer 17 Connect for communication.

The man-machine interface module V provides an interactive interface for the user and the programming device. The man-machine interface module V includes an LCD liquid crystal display part 13 and a keyboard part 14. The LCD liquid crystal display part 13 includes an LCD liquid crystal display 131 and an LCD controller 132. The LCD liquid crystal display The screen 131 is connected with the LCD controller 132, and the LCD controller 132 is connected with the embedded ARM microprocessor 1 through the SPI bus interface to provide LCD control signals, and supports display modes up to 24 data lines; the keyboard part 14 includes keyboard control 141 and a matrix keyboard 142, the matrix keyboard 142 is connected to the keyboard controller 141, the keyboard controller 141 is connected to the embedded ARM microprocessor 1, and provides control signals for the matrix keyboard 142, including the system interrupt signal of the keyboard part 14. This programming device provides a unified data and control interface, supports TFT and STN LCD screens in various data modes, and can display a character display format of 16 characters x 8 lines. Users can also choose monochrome or color LCD screens according to needs. The matrix keyboard 142 is divided into different parts such as system keys, function keys, and multiplex keys according to different functions; the system keys are used to set system functions and modes, mainly including power supply mode, operation mode, interface mode, and file management mode; For the selection of various auxiliary functions when the system is running, including enter key, function key, space key, shift key, etc.; The function function; the multiplex key represents two kinds of symbols: alphabetic symbols and numeric symbols. When the key value is pressed, the system defaults to input the first type of symbol, and the second type of symbol can be obtained by pressing the shift key and the corresponding key; through The matrix keyboard 142 allows users to input function commands and device symbols.

The CAN interface module VI provides a communication interface for data exchange with the long-distance PLC host 18 when the programming device is working online, so as to connect any CAN node on the industrial site to access the CAN field bus, and realize the remote PLC host 18 at the monitoring site. program debugging and operation; the CAN interface module VI connects the nodes on the CAN bus to access the field bus, and exchanges data with the PLC host 18 on the CAN bus; the CAN interface module VI includes a CAN controller 11 and a CAN transceiver 12, and a CAN controller 11 Directly link to each other with the embedded ARM microprocessor 1 of main control module 1 by SPI bus interface to realize data transmission, provide interruption and state information to embedded ARM microprocessor 1, the task that CAN controller 11 processes includes interface management, sending and receiving Buffering, acceptance filtering and bit processing, etc.; CAN controller 11 is connected to CAN transceiver 12 to explain the addressing of CPU commands and control CAN registers. This programming device is connected with upper computer 17 and PLC host 18 respectively through CAN interface module VI, Realize multiple functions such as remote download, monitoring and debugging of PLC user programs.

Below, in conjunction with accompanying drawing 1, Fig. 2 and Fig. 7 and the novel portable PLC programming device of embodiment one describe the working process of the utility model portable PLC programming device:

When the programming device is powered on, it will enter the self-test state: if the self-test fails, the system will alarm through the buzzer; if the self-test is successful, the system will read the program code and load it into the embedded real-time operating system and run it. At this time, it will enter the startup screen. The LCD liquid crystal display part 13 of the man-machine interface module V displays system parameter configuration prompts, and the user can select the power supply mode and the interface mode; When in online mode, the user can select function options such as file management, parameter editing and setting, program compilation and debugging through the matrix keyboard 142; when entering the online mode, the user can choose file management, remote monitoring, user program debugging, data communication and program editing, etc. Function.

The driver program of the driving hardware module mainly includes the LCD liquid crystal screen 131 display driver of the man-machine interface part V and the driver program of the matrix keyboard 142, the driver program of the CAN bus, the driver program of the universal asynchronous serial interface UART15 and USB interface 16; To the driver program of Nor FLASH memory 5, Nand FLASH memory 6 and SDRAM memory 7 in memory module II; Embedded operating system adopts embedded real-time operating system; Programmer application program includes the coding and decoding of input PLC instruction, and CAN Bus communication and monitoring program for PLC status.

Embodiment 1 is one of the best implementation modes of the utility model portable PLC programming device.

Embodiment two:

A novel portable PLC programming device with simplified structure.

Embodiment 2 is a simplified transformation structure of Embodiment 1 of the present utility model. As shown in FIGS. The communication interface module does not include the USB interface 16, that is: the programming device includes the main control module I, the memory module II, the power management module IIIa of the simplified structure, the man-machine interface module V, the CAN interface module VI and the communication module of the simplified structure. Interface module IVa;

The power management module IIIa of described simplified structure comprises external power interface 8 and voltage conversion circuit 9, and external power interface 8 is connected with the embedded ARM microprocessor 1 of main control module 1 by voltage conversion circuit 9, and described voltage conversion circuit 9 Also connected with the internal rechargeable battery 19 of the main control module 1, the external power supply interface 8 provides an external DC power input, and the voltage conversion circuit 9 converts the DC voltage, charges the internal rechargeable battery 19 or directly converts it to the programming device use;

The communication interface module IVa of described simplified structure comprises universal asynchronous serial interface UART15, and universal asynchronous serial interface UART15 comprises serial communication controller 151, RS-232 level converter 152 and data transceiver 153, and described data transceiver 153 is connected with serial communication controller 151 by RS-232 level shifter 152, and described serial communication controller 151 is connected with the embedded ARM microprocessor 1 of main control module 1; Realize main control module 1 and PLC main frame 18 data communication, and main control module 1 is directly with the data communication of host computer 17;

All the other modules are connected in the same way as in the first embodiment, and their functions and work processes are similar to those in the first embodiment, so they will not be repeated here; Connect the upper computer 17 to realize the transmission and storage of a large amount of data, and can not obtain power from the USB interface of the upper computer 17 for the use of the programming device or the charging of the internal rechargeable battery 19. Compared with the first embodiment, the effect is slightly worse.

Embodiment three:

New portable PLC programming device without communication interface module IV.

Embodiment 3 is another simplified conversion structure of Embodiment 1 of the present utility model. As shown in Figures 5-6, the new portable PLC programming device only includes a main control module I, a memory module II, and a man-machine interface module. V, CAN interface module VI and only the power management module IIIa of the simplified structure of external power supply interface 8 and voltage conversion circuit 9 and do not have communication interface module IV, under this structural form, described main control module I is connected with storage respectively The device module II, the power management module IIIa, the man-machine interface module V and the CAN interface module VI are connected, the power management module IIIa is connected with the PLC host 18, and the CAN interface module VI is connected with the PLC host 18 and the host computer 17 through the CAN bus connection; all the other module connection modes and their functions and work processes are similar to those of the first embodiment, and will not be repeated here; the difference with the first embodiment is that when the novel portable PLC programming device of this simplified structure works, the main part of the programming device The control module I can only communicate with the host computer 17 and the PLC mainframe 18 through the CAN interface module VI; the power module IIIa of the simplified structure can only be charged through the external DC power interface 8; compared with the first embodiment, the effect is slightly worse.

The above three implementations can realize the off-line operation of the programming device, realize the direct communication with the host computer 17, and can also connect any CAN node in the industrial site to access the CAN field bus, so as to realize the remote PLC host computer in the industrial site 18 user program debugging, operation and monitoring.

As a variation of the embodiment of the utility model, other transformations that do not violate the purpose of the utility model are also within the protection scope of the utility model.

Claims (8)

1. novel portable PLC programmer, it is characterized in that: this programmer comprises main control module (I), memory module (II), power management module (III), human-computer interface module (V) and CAN interface module (VI);

Described main control module (I) comprises embedded-type ARM microprocessor (1), real time clock circuit (2), reset circuit (3), JTAG debug i/f circuit (4) and charge inside battery (19), real time clock circuit (2), reset circuit (3), JTAG debug i/f circuit (4) is connected with embedded-type ARM microprocessor (1) respectively with charge inside battery (19), described embedded-type ARM microprocessor (1) is the control core, realization is to the adjusting and the control of other ingredients in the main control module (I), described reset circuit (3) provides reset signal for embedded-type ARM microprocessor (1), described JTAG debug i/f circuit (4) provides debugging interface to link to each other with external circuits to realize the debugging to the programmer hardware and software, described real time clock circuit (2) provides time and date information, charge inside battery (19) provides the 5V power supply to realize off-line working for programmer, main control module (I) has for other modules of system provides steering order and data processing, handle the break in service of peripheral module, scheduling is handled the running status of each module and is driven the function of hardware module, programmer makes up embedded real-time operating system in main control module (I), carry out multiple task management and communication management, realize editor, handle the function of PLC user program and monitoring PLC running status;

Described memory module (II) is used to store embedded software system program, user program and data and provides the dynamic operation space for data processing;

Described power management module (III) is to realize that power supply is selected and the main modular of power management, its effect provide the external dc power input or from host computer (17) obtain power supply or with DC voltage change, to inner rechargeable battery (19) charging or directly use for programmer after the conversion;

Described human-computer interface module (V) provides interactive interface for user and programmer;

Described CAN interface module (VI) provides communication interface with the exchanges data of remote PLC main frame (18) when the programmer on-line working, thereby any CAN node that connects industry spot is to insert the CAN fieldbus, and it is on-the-spot to the program debug of remote PLC main frame (18) and the data communication of operation and direct and host computer (17) to be implemented in monitoring;

Described main control module (I) is connected with memory module (II), power management module (III), human-computer interface module (V) and CAN interface module (VI) respectively, described power management module (III) is connected with PLC main frame (18), and described CAN interface module (VI) is connected with host computer (17) with PLC main frame (18) by the CAN bus.

2. novel portable PLC programmer as claimed in claim 1, it is characterized in that: described memory module (II) comprises Nor FLASH storer (5), Nand FLASH storer (6) and SDRAM storer (7), described NorFLASH storer (5), Nand FLASH storer (6) and SDRAM storer (7) directly are connected with the embedded-type ARM microprocessor (1) of main control module (I) respectively, realize the operation control of ARM microprocessor (1) to memory module (II); Wherein, the embedded software system program of Nor FLASH storer (5) storage programmer, Nand FLASH storer (6) is deposited user program and data, and SDRAM storer (7) moves for system and the communication data processing provides the space.

3. novel portable PLC programmer as claimed in claim 2, it is characterized in that: described human-computer interface module (V) comprises LCD liquid-crystal display section (13) and keyboard portion (14), described LCD liquid-crystal display section (13) comprises LCD LCDs (131) and lcd controller (132), described LCD LCDs (131) is connected with the embedded-type ARM microprocessor (1) of main control module (I) by lcd controller (132), described keyboard portion (14) comprises keyboard controller (141) and matrix keyboard (142), and described matrix keyboard (142) is connected with the embedded-type ARM microprocessor (1) of main control module I by keyboard controller (141).

4. novel portable PLC programmer as claimed in claim 3, it is characterized in that: described CAN interface module (VI) comprises CAN controller (11) and CAN transceiver (12), and described CAN transceiver (12) is connected with the embedded-type ARM microprocessor (1) of main control module (I) by CAN controller (11).

5. novel portable PLC programmer as claimed in claim 4, it is characterized in that: described power management module (III) comprises external power source interface (8), voltage conversion circuit (9) and USB charge controller (10), described USB charge controller (10) is connected with the embedded-type ARM microprocessor (1) of main control module I by voltage conversion circuit (9) respectively with external power source interface (8), described voltage conversion circuit (9) also is connected with the charge inside battery (19) of main control module (I), described external power source interface (8) provides the external dc power input, USB charge controller (10) obtains power supply by USB interface (16) from the USB interface of host computer (17), and voltage conversion circuit (9) is changed DC voltage, use for programmer to inner rechargeable battery (19) charging or after directly changing.

6. novel portable PLC programmer as claimed in claim 4, it is characterized in that: described power management module (III) is the power management module (IIIa) of simplified structure, the power management module of this simplified structure (IIIa) comprises external power source interface (8) and voltage conversion circuit (9), described external power source interface (8) is connected with the embedded-type ARM microprocessor (1) of main control module (I) by voltage conversion circuit (9), described voltage conversion circuit (9) also is connected with the charge inside battery (19) of main control module (I), described external power source interface (8) provides the external dc power input, and described voltage conversion circuit (9) is changed DC voltage, use for programmer to inner rechargeable battery (19) charging or after directly changing.

7. novel portable PLC programmer as claimed in claim 5, it is characterized in that: described programmer also comprises a communication interface module (IV), described communication interface module (IV) comprises universal asynchronous serial interface UART (15) and USB interface (16), universal asynchronous serial interface UART (15) comprises serial communication control (151), RS-232 level translator (152) and data collector (153), data collector (153) is connected with serial communication control (151) by RS-232 level translator (152), serial communication control (151) is connected with control data transmission with the embedded-type ARM microprocessor (1) of main control module (I), RS-232 level translator (152) connects serial communication control (151) to be responsible for level conversion, and the transmission data are responsible for accepting and are sent to data collector (153); USB interface (16) comprises USB device controller (161) and USB transceiver (162), USB device controller (161) and USB transceiver (162) interconnect, USB device controller (161) is connected with control data transmission with the embedded-type ARM microprocessor (1) of main control module (I), USB transceiver (162) is responsible for transceive data, and be connected with the USB charge controller (10) of power management module (III), universal asynchronous serial interface UART (15) and USB interface (16) are also by being connected with host computer (17) to realize the data interaction with this host computer (17), main control module (I) is by Asynchronous Serial Interface UART (15) and directly communication of host computer (17), simultaneously by universal asynchronous serial interface UART (15) and PLC main frame (18) communication; Main control module (I) can also be used USB interface (16) and be connected with the USB interface of host computer (17) and carry out communication.

8. novel portable PLC programmer as claimed in claim 6, it is characterized in that: described programmer also comprises the communication interface module (IVa) of a simplified structure, the communication interface module of this simplified structure (IVa) comprises universal asynchronous serial interface UART (15), described universal asynchronous serial interface UART (15) comprises serial communication control (151), RS-232 level translator (152) and data collector (153), described data collector (153) is connected with serial communication control (151) by RS-232 level translator (152), and described serial communication control (151) is connected with the embedded-type ARM microprocessor (1) of main control module (I); Realize the data communication of main control module (I) and PLC main frame (18), and main control module (I) is direct and the data communication of host computer (17).

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