CN109459945B - Novel multichannel off-line programmable control driver and programming method - Google Patents
Novel multichannel off-line programmable control driver and programming method Download PDFInfo
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- CN109459945B CN109459945B CN201811130608.0A CN201811130608A CN109459945B CN 109459945 B CN109459945 B CN 109459945B CN 201811130608 A CN201811130608 A CN 201811130608A CN 109459945 B CN109459945 B CN 109459945B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
A novel multichannel off-line programmable control driver and a programmable method comprise a channel selection control panel module, a plurality of control drive plates and a touch screen. The design and installation idea of the plugboard circuit board is adopted, so that the integration level of the control driver is improved; various common communication interfaces are used for off-line upgrading and rewriting of internal circuit board programs, so that the parameter rewriting capability of a control driver is improved, and the later-stage optimization capability of a product is improved; by adopting a touch screen design technology, the human-computer interaction experience is enhanced, and the program upgrading operation is more convenient and more intuitive.
Description
Technical Field
The invention relates to a control driver and a programming method.
Background
With the continuous development and application of electromechanical servo technology, the requirements for the control driver gradually develop towards miniaturization, reliability and strong maintainability, and in the aspect of software updating and maintenance, the program programming mode of the traditional control driver is to program and solidify the final version of the program into the FLASH inside the main control circuit board of the control driver through an emulator after the system hardware is debugged. Subsequently, if the software function needs to be modified, the control driver needs to be detached frequently, and the upgrade program is programmed into the control driver through the connection simulator. However, as the installation space of the control driver is smaller and smaller, the requirement for updating and upgrading the program is increasingly increased, in some application occasions, because the operation space around the control driver is insufficient, the control driver cannot be wholly moved out when the program is rewritten, the method for directly burning and writing the program through the emulator is difficult to realize, and in addition, because the miniaturization and integration design of the control driver are carried out simultaneously, more than one circuit board is contained in the control driver, so that the control driver needs to be uncovered to burn and write the circuit board when the program is rewritten, and the difficulty is brought to system debugging and software upgrading.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to solve the problems, the invention provides a novel multi-channel off-line programmable control driver and a programmable method, which adopt a design and installation thought of a plugboard type circuit board to improve the integration level of the control driver; various common communication interfaces are used for off-line rewriting of internal circuit board programs, so that the parameter rewriting capability of a control driver is improved, and the later-stage optimization capability of a product is improved. By adopting a touch screen design technology, the human-computer interaction experience is enhanced, and the program upgrading operation is more convenient and more intuitive.
The technical scheme adopted by the invention is as follows: a novel multichannel offline programmable control driver comprises a channel selection control panel module, a plurality of control drive plates and a touch screen;
the touch screen is connected with the channel selection control board, sends a motor running state instruction signal to the channel selection control board, receives and displays state information of the channel selection control board, and the state information comprises a switch state and a gated control drive board number; the touch screen receives an external program through a USB or a network cable, generates a corresponding gating instruction, and sends a gating instruction and an off-line program data packet to the channel selection control board;
the channel selection control board receives the motor running state instruction signal, gates the corresponding control drive board and switches on the corresponding contactor, and feeds back state information to the touch screen; the channel selection control panel integrates an external communication interface and exchanges information with an external control system according to a protocol; the channel selection control board selects a corresponding control drive board according to the gating instruction, and off-line programs are programmed into the control drive board;
each control driving plate is connected in parallel into an external power supply and is connected in parallel into an external three-phase alternating current motor through a contactor, position feedback signals of the three-phase alternating current motor are collected, the direct current power supply is inverted to alternating current, and the three-phase alternating current motor is driven to rotate; and the control driving board receives the offline program and updates the offline program.
The touch screen comprises a programming module, a monitoring module and an instruction module; the programming module sends a gating instruction and a corresponding off-line program data packet to the channel selection control board; the monitoring module receives and displays the state information of the channel selection control board; the instruction module sends a motor running state instruction to the channel selection control board.
The method for programming the offline program to the control drive board by the touch screen comprises the following steps:
setting a baud rate a 1;
the touch screen sends a handshake signal to a corresponding control drive board and receives a handshake feedback signal;
reset baud rate a2, a2 > a 1;
reading an externally transmitted hex file by the touch screen, and sending a command for deleting a sector of the control drive board to the corresponding control drive board;
the control drive board deletes data in the sector after receiving the instruction, and feeds back a deletion state to the touch screen;
after receiving the feedback information, the touch screen sends data in the hex file to the control drive board;
the control driving board receives and loads data, then checks the data and feeds self state information back to the touch screen;
and after the touch screen receives the state information of the data programming completion, the programming is completed.
The control drive board comprises a power supply circuit, DSP control units, a power circuit, a voltage and current acquisition circuit and a protection circuit, wherein the power supply circuit converts an external 28V power supply into internal 5V, 1.8V and 3.3V control power supplies, and the DSP control units, the power circuit, the voltage and current acquisition circuit and the protection circuit supply power; the DSP control unit adopts an internal timing interruption operation mode, a timing period is 100us, a crystal oscillator 120M is operated, PWM control waveforms are generated by closed-loop operation, and an external motor is driven to rotate; the voltage and current acquisition circuit acquires the voltage and current data of the external motor in real time, feeds the voltage and current data back to an AD acquisition module in the DSP control unit and converts the voltage and current data into digital quantity to participate in closed-loop operation; the protection circuit monitors and controls the data of the operating current, the operating voltage and the operating temperature of the driving plate in real time, and immediately cuts off the logic connection with an external motor when overcurrent, overvoltage and overtemperature occur.
The channel selection control panel comprises a DSP core processor, a 485 bus interface and a CAN bus, the CAN bus interface realizes information communication between the DSP core processor and external equipment according to a CAN protocol, the CAN protocol adopts a CAN2.0B protocol, the communication data has low bytes in front and high bytes in back, and the communication speed is 125 KB/s; the 485 bus interface adopts a Modbus serial port communication protocol, and the data transmission rate is 9600 bps; the DSP core processor adopts TMS28335 series.
A multi-channel off-line program programming method, which uses a multi-channel off-line programmable control driver to program off-line programs, comprises the following steps:
setting a baud rate a 1;
the touch screen sends a handshake signal to a corresponding control drive board and receives a handshake feedback signal;
reset baud rate a2, a2 > a 1;
reading an externally transmitted hex file by the touch screen, and sending a command for deleting a sector of the control drive board to the corresponding control drive board;
the control drive board deletes data in the sector after receiving the instruction, and feeds back a deletion state to the touch screen;
after receiving the feedback information, the touch screen sends data in the hex file to the control drive board;
the control driving board receives and loads data, then checks the data and feeds self state information back to the touch screen;
and after the touch screen receives the state information of the data programming completion, the programming is completed.
The off-line programmable control driver comprises a channel selection control panel module, a plurality of control drive plates and a touch screen;
the touch screen is connected with the channel selection control board, sends a motor running state instruction signal to the channel selection control board, receives and displays state information of the channel selection control board, and the state information comprises a switch state and a gated control drive board number; the touch screen receives an external program through a USB or a network cable, generates a corresponding gating instruction, and sends a gating instruction and an off-line program data packet to the channel selection control board;
the channel selection control board receives the motor running state instruction signal, gates the corresponding control drive board and switches on the corresponding contactor, and feeds back state information to the touch screen; the channel selection control panel integrates an external communication interface and exchanges information with an external control system according to a protocol; the channel selection control board selects a corresponding control drive board according to the gating instruction, and off-line programs are programmed into the control drive board;
each control driving plate is connected in parallel into an external power supply and is connected in parallel into an external three-phase alternating current motor through a contactor, position feedback signals of the three-phase alternating current motor are collected, the direct current power supply is inverted to alternating current, and the three-phase alternating current motor is driven to rotate; and the control driving board receives the offline program and updates the offline program.
The touch screen comprises a programming module, a monitoring module and an instruction module; the programming module sends a gating instruction and a corresponding off-line program data packet to the channel selection control board; the monitoring module receives and displays the state information of the channel selection control board; the instruction module sends a motor running state instruction to the channel selection control board.
The control drive board comprises a power supply circuit, DSP control units, a power circuit, a voltage and current acquisition circuit and a protection circuit, wherein the power supply circuit converts an external 28V power supply into internal 5V, 1.8V and 3.3V control power supplies, and the DSP control units, the power circuit, the voltage and current acquisition circuit and the protection circuit supply power; the DSP control unit adopts an internal timing interruption operation mode, a timing period is 100us, a crystal oscillator 120M is operated, PWM control waveforms are generated by closed-loop operation, and an external motor is driven to rotate; the voltage and current acquisition circuit acquires the voltage and current data of the external motor in real time, feeds the voltage and current data back to an AD acquisition module in the DSP control unit and converts the voltage and current data into digital quantity to participate in closed-loop operation; the protection circuit monitors and controls the data of the operating current, the operating voltage and the operating temperature of the driving plate in real time, and immediately cuts off the logic connection with an external motor when overcurrent, overvoltage and overtemperature occur.
The channel selection control panel comprises a DSP core processor, a 485 bus interface and a CAN bus, the CAN bus interface realizes information communication between the DSP core processor and external equipment according to a CAN protocol, the CAN protocol adopts a CAN2.0B protocol, the communication data has low bytes in front and high bytes in back, and the communication speed is 125 KB/s; the 485 bus interface adopts a Modbus serial port communication protocol, and the data transmission rate is 9600 bps; the DSP core processor adopts TMS28335 series.
Compared with the prior art, the invention has the advantages that:
(1) the control driver adopts a plug board type structural design, and compared with the traditional control driver structural design method, the control driver has the advantages that the space size is reduced, and the integration and miniaturization are further completed;
(2) the control driver of the invention designs the touch screen on the panel, and selects the operation of the circuit board through the touch screen, when a certain channel has a fault, the control driver board can be quickly switched through the change of the channel, thereby further improving the reliability of the system.
(3) The control driver of the invention adds the function of off-line programming program, and can complete programming only through the USB flash disk, thus improving the programming problem of the circuit board caused by space limitation and the like;
(4) the control driver can receive various control signals, and has the advantages of simple interface, flexible use and good universality. The contactor is arranged in the control driver, and the cascade connection of the control driving plates can be completed through external wiring, so that the power grade of the control driver is improved;
(5) the control driver can complete the monitoring of the circuit board parameters through the selection of the circuit board and complete the program programming of each circuit board on the premise of not opening the cover; the control driver shell adopts the special-shaped structural design, the heat dissipation surface of each circuit board is increased, and the heat dissipation rate of the circuit board is improved.
Drawings
Fig. 1 is a diagram showing a connection relationship between a control driver and a system.
Fig. 2 is a control driver cascade connection.
Fig. 3 is a flow chart of the control driver function.
FIG. 4 is a flowchart of a programming subroutine.
Detailed Description
The invention is described with reference to the accompanying drawings.
As shown in fig. 1, a novel multi-channel off-line programmable control driver includes a channel selection control board module, a plurality of control drive boards, and a touch screen;
the touch screen is connected with the channel selection control board, sends a motor running state instruction signal to the channel selection control board, receives and displays state information of the channel selection control board, and the state information comprises a switch state and a gated control drive board number; the touch screen receives an external program through a USB or a network cable, generates a corresponding gating instruction, and sends a gating instruction and an off-line program data packet to the channel selection control board;
the channel selection control board receives the motor running state instruction signal, gates the corresponding control drive board and connects the corresponding contactor (as shown in fig. 2), and feeds back state information to the touch screen; the channel selection control panel integrates an external communication interface and exchanges information with an external control system according to a protocol; the channel selection control board selects a corresponding control drive board according to the gating instruction, and off-line programs are programmed into the control drive board;
each control driving plate is connected in parallel into an external power supply and is connected in parallel into an external three-phase alternating current motor through a contactor, position feedback signals of the three-phase alternating current motor are collected, the direct current power supply is inverted to alternating current, and the three-phase alternating current motor is driven to rotate; and the control driving board receives the offline program and updates the offline program.
As shown in fig. 3, the touch screen includes a programming module, a monitoring module, and an instruction module; the programming module sends a gating instruction and a corresponding off-line program data packet to the channel selection control board; the monitoring module receives and displays the state information of the channel selection control board; the instruction module sends a motor running state instruction to the channel selection control board.
The channel selection control panel integrates a communication interface and logic judgment and channel selection functions. The channel selection control panel comprises a DSP core processor, a 485 bus interface and a CAN bus, wherein the CAN bus interface realizes information communication between the DSP core processor and external equipment by relying on a CAN protocol, the CAN protocol adopts a CAN2.0B protocol, the low byte of communication data is in front, the high byte is in back, and the communication speed is 125 KB/s. The 485 bus interface adopts a Modbus serial port communication protocol, and the data transmission rate is 9600 bps. The DSP core processor adopts TMS28335 series which is widely applied and mature at present, and realizes data exchange and logic control with peripheral circuits through a serial communication interface, a CAN communication interface, a data bus, an address bus and the like.
The control drive board comprises a power circuit, a DSP control unit, a power circuit, a voltage and current acquisition circuit and a protection circuit, wherein each control drive board adopts the same design idea, and a power module is responsible for converting external 28V control electricity into internal 5V, 3.3V and 1.8V control voltage to supply to each functional unit of the control drive board. The DSP control unit adopts an internal timing interruption operation mode, a timing period is 100us, a crystal oscillator 120M is operated, PWM control waveforms are generated by closed-loop operation, and an external motor is driven to rotate. The voltage and current acquisition circuit is responsible for acquiring the voltage and current data of the motor operation in real time, feeding the voltage and current data back to the AD acquisition module in the DSP and converting the voltage and current data into digital quantity to participate in operation. The protection circuit monitors and controls data such as the running current of the driver in real time, and once overcurrent occurs, the logic connection with an external motor is immediately cut off, so that the control driver is protected from further damage.
The touch screen adopts a capacitive touch technology, a user operation interface of the touch screen is written based on special interface design software, and the interface mainly comprises the following contents: the control drive board channel selection window can be used for randomly selecting control drive board channels 1-4 to be programmed according to user requirements; a program loading window, wherein a user can select a program file to be programmed according to the software upgrading requirement; the program programming progress display window can display a program programming progress bar in real time; and after the command is confirmed to be issued, the touch screen programming interface selects a control panel program through the operating channel, and the upgrading program selected by the user is programmed into the corresponding control drive panel.
The steps of using the control driver to perform off-line programming are as follows:
1. connecting a multi-channel off-line programmable control driver with a system according to the method shown in figure 1, wherein the control system is connected with the control driver through a bus and a power supply, and a driving power line is connected with a position feedback signal line between the control driver and a three-phase motor;
2. the device can be controlled by the touch screen, can also be controlled by an external bus through a control system, and can also be set by the touch screen, and a hex file (generated by a program compiler) copied in a U disk can be downloaded to any control drive board by using a UART.
In the programming subprogram, the circuit board receives programming instructions and loading data sent by the touch screen from the power-saving mode, and under the condition that the data is ensured to be complete, the sector is erased, the data is loaded into a specified Flash sector address, the correctness of the data loading is verified, and the programming of the program is completed. The detailed flow chart is shown in fig. 4.
The method for programming the offline program to the control drive board by the touch screen comprises the following steps:
setting a baud rate a 1;
the touch screen sends a handshake signal to a corresponding control drive board and receives a handshake feedback signal;
reset baud rate a2, a2 > a 1;
reading an externally transmitted hex file by the touch screen, and sending a command for deleting a sector of the control drive board to the corresponding control drive board;
the control drive board deletes data in the sector after receiving the instruction, and feeds back a deletion state to the touch screen;
after receiving the feedback information, the touch screen sends data in the hex file to the control drive board;
the control driving board receives and loads data, then checks the data and feeds self state information back to the touch screen;
and after the touch screen receives the state information of the data programming completion, the programming is completed.
3. And after the system test is completed, the power supply of the control driver is closed.
The present invention has not been described in detail, partly as is known to the person skilled in the art.
Claims (10)
1. A novel multichannel offline programmable control driver is characterized by comprising a channel selection control panel module, a plurality of control drive plates and a touch screen;
the touch screen is connected with the channel selection control board, sends a motor running state instruction signal to the channel selection control board, receives and displays state information of the channel selection control board, and the state information comprises a switch state and a gated control drive board number; the touch screen receives an external program through a USB or a network cable, generates a corresponding gating instruction, and sends a gating instruction and an off-line program data packet to the channel selection control board;
the channel selection control board receives the motor running state instruction signal, gates the corresponding control drive board and switches on the corresponding contactor, and feeds back state information to the touch screen; the channel selection control panel integrates an external communication interface and exchanges information with an external control system according to a protocol; the channel selection control board selects a corresponding control drive board according to the gating instruction, and off-line programs are programmed into the control drive board;
each control driving plate is connected in parallel into an external power supply and is connected in parallel into an external three-phase alternating current motor through a contactor, position feedback signals of the three-phase alternating current motor are collected, the direct current power supply is inverted to alternating current, and the three-phase alternating current motor is driven to rotate; and the control driving board receives the offline program and updates the offline program.
2. The novel multi-channel off-line programmable write control driver of claim 1, wherein: the touch screen comprises a programming module, a monitoring module and an instruction module; the programming module sends a gating instruction and a corresponding off-line program data packet to the channel selection control board; the monitoring module receives and displays the state information of the channel selection control board; the instruction module sends a motor running state instruction to the channel selection control board.
3. A novel multi-channel off-line programmable write control driver according to claim 1 or 2, characterized in that: the method for programming the offline program to the control drive board by the touch screen comprises the following steps:
setting a baud rate a 1;
the touch screen sends a handshake signal to a corresponding control drive board and receives a handshake feedback signal;
reset baud rate a2, a2 > a 1;
reading an externally transmitted hex file by the touch screen, and sending a command for deleting a sector of the control drive board to the corresponding control drive board;
the control drive board deletes data in the sector after receiving the instruction, and feeds back a deletion state to the touch screen;
after receiving the feedback information, the touch screen sends data in the hex file to the control drive board;
the control driving board receives and loads data, then checks the data and feeds self state information back to the touch screen;
and after the touch screen receives the state information of the data programming completion, the programming is completed.
4. A novel multi-channel off-line programmable write control driver as claimed in claim 3, wherein: the control drive board comprises a power supply circuit, a DSP control unit, a power circuit, a voltage and current acquisition circuit and a protection circuit, wherein the power supply circuit converts an external 28V power supply into internal 5V, 1.8V and 3.3V control power supplies to the DSP control unit, the power circuit, the voltage and current acquisition circuit and the protection circuit; the DSP control unit adopts an internal timing interruption operation mode, a timing period is 100us, a crystal oscillator 120M is operated, PWM control waveforms are generated by closed-loop operation, and an external motor is driven to rotate; the voltage and current acquisition circuit acquires the voltage and current data of the external motor in real time, feeds the voltage and current data back to an AD acquisition module in the DSP control unit and converts the voltage and current data into digital quantity to participate in closed-loop operation; the protection circuit monitors and controls the data of the operating current, the operating voltage and the operating temperature of the driving plate in real time, and immediately cuts off the logic connection with an external motor when overcurrent, overvoltage and overtemperature occur.
5. The novel multi-channel off-line programmable write control driver of claim 4, wherein: the channel selection control panel comprises a DSP core processor, a 485 bus interface and a CAN bus, the CAN bus interface realizes information communication between the DSP core processor and external equipment according to a CAN protocol, the CAN protocol adopts a CAN2.0B protocol, the communication data has low bytes in front and high bytes in back, and the communication speed is 125 KB/s; the 485 bus interface adopts a Modbus serial port communication protocol, and the data transmission rate is 9600 bps; the DSP core processor adopts TMS28335 series.
6. A multichannel off-line program programming method is characterized in that: the off-line program is programmed by using a multi-channel off-line programmable control driver, which comprises the following steps:
setting a baud rate a 1;
the touch screen sends a handshake signal to a corresponding control drive board and receives a handshake feedback signal;
reset baud rate a2, a2 > a 1;
reading an externally transmitted hex file by the touch screen, and sending a command for deleting a sector of the control drive board to the corresponding control drive board;
the control drive board deletes data in the sector after receiving the instruction, and feeds back a deletion state to the touch screen;
after receiving the feedback information, the touch screen sends data in the hex file to the control drive board;
the control driving board receives and loads data, then checks the data and feeds self state information back to the touch screen;
and after the touch screen receives the state information of the data programming completion, the programming is completed.
7. The method of claim 6, wherein: the off-line programmable control driver comprises a channel selection control panel module, a plurality of control drive plates and a touch screen;
the touch screen is connected with the channel selection control board, sends a motor running state instruction signal to the channel selection control board, receives and displays state information of the channel selection control board, and the state information comprises a switch state and a gated control drive board number; the touch screen receives an external program through a USB or a network cable, generates a corresponding gating instruction, and sends a gating instruction and an off-line program data packet to the channel selection control board;
the channel selection control board receives the motor running state instruction signal, gates the corresponding control drive board and switches on the corresponding contactor, and feeds back state information to the touch screen; the channel selection control panel integrates an external communication interface and exchanges information with an external control system according to a protocol; the channel selection control board selects a corresponding control drive board according to the gating instruction, and off-line programs are programmed into the control drive board;
each control driving plate is connected in parallel into an external power supply and is connected in parallel into an external three-phase alternating current motor through a contactor, position feedback signals of the three-phase alternating current motor are collected, the direct current power supply is inverted to alternating current, and the three-phase alternating current motor is driven to rotate; and the control driving board receives the offline program and updates the offline program.
8. The method of claim 7, wherein the method comprises: the touch screen comprises a programming module, a monitoring module and an instruction module; the programming module sends a gating instruction and a corresponding off-line program data packet to the channel selection control board; the monitoring module receives and displays the state information of the channel selection control board; the instruction module sends a motor running state instruction to the channel selection control board.
9. A multi-channel off-line program programming method according to claim 7 or 8, characterized in that: the control drive board comprises a power supply circuit, a DSP control unit, a power circuit, a voltage and current acquisition circuit and a protection circuit, wherein the power supply circuit converts an external 28V power supply into internal 5V, 1.8V and 3.3V control power supplies to the DSP control unit, the power circuit, the voltage and current acquisition circuit and the protection circuit; the DSP control unit adopts an internal timing interruption operation mode, a timing period is 100us, a crystal oscillator 120M is operated, PWM control waveforms are generated by closed-loop operation, and an external motor is driven to rotate; the voltage and current acquisition circuit acquires the voltage and current data of the external motor in real time, feeds the voltage and current data back to an AD acquisition module in the DSP control unit and converts the voltage and current data into digital quantity to participate in closed-loop operation; the protection circuit monitors and controls the data of the operating current, the operating voltage and the operating temperature of the driving plate in real time, and immediately cuts off the logic connection with an external motor when overcurrent, overvoltage and overtemperature occur.
10. The method of claim 9, wherein the method comprises: the channel selection control panel comprises a DSP core processor, a 485 bus interface and a CAN bus, the CAN bus interface realizes information communication between the DSP core processor and external equipment according to a CAN protocol, the CAN protocol adopts a CAN2.0B protocol, the communication data has low bytes in front and high bytes in back, and the communication speed is 125 KB/s; the 485 bus interface adopts a Modbus serial port communication protocol, and the data transmission rate is 9600 bps; the DSP core processor adopts TMS28335 series.
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| CN203982359U (en) * | 2014-06-27 | 2014-12-03 | 国家电网公司 | Can connect the FLASH program burn writing device of multiple modules simultaneously |
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