CN205721755U - The Profibus-DP communication expansion card of converter and converter - Google Patents
The Profibus-DP communication expansion card of converter and converter Download PDFInfo
- Publication number
- CN205721755U CN205721755U CN201620188712.5U CN201620188712U CN205721755U CN 205721755 U CN205721755 U CN 205721755U CN 201620188712 U CN201620188712 U CN 201620188712U CN 205721755 U CN205721755 U CN 205721755U
- Authority
- CN
- China
- Prior art keywords
- profibus
- converter
- communication
- expansion card
- interface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Communication Control (AREA)
Abstract
A kind of Profibus DP communication expansion card of converter, pluggable on converter, the Modbus protocol data of converter can be converted to Profibus DP protocol data, including singlechip CPU, toggle switch, protocol conversion module, Profibus Bus isolation module, Profibus DP interface, Modbus communication module and RS485 communication interface；The RS485 communication interface of Profibus DP communication expansion card is connected with the RS485 interface of converter；Modbus communication module is connected with RS485 communication interface；Singlechip CPU is connected with Modbus communication module；Protocol conversion module is connected with singlechip CPU；Profibus Bus isolation module is connected with protocol conversion module, for isolation protective circuit；Profibus DP interface is connected with Profibus Bus isolation module, and after changing, Profibus DP protocol data is exported to Profibus network by Profibus DP interface；The outfan of toggle switch is connected with singlechip CPU 1, and the address for communication expansion card is arranged.
Description
Technical field
This utility model relates to Low Voltage Electrical Apparatus, relates to a kind of converter, particularly to the Profibus-DP communication expansion card of a kind of converter.
Background technology
PROFIBUS is DIN (DIN19245) and the standard for Fieldbus of European standard (EN50170).Profibus-DP is a kind of good communication bus sturdy and durable, powerful, open, can quickly, circulation carry out data exchange.Part converter provides RS485 communication interface at present, and the Modbus communications protocol adopted international standards carries out master-slave communication.As produced the converter with Profibus-DP communication function, converter master board or guidance panel increase Profibus-DP communication function, then considerably increases the cost of converter.As using Profibus-DP communication expansion card as the peripheral hardware of converter, the Modbus protocol data of converter is converted to Profibus-DP protocol data by this communication expansion card, then can reduce cost, nor affect on the normal use of converter simultaneously.
The shortcoming of the Profibus-DP communication expansion card of general converter is:
1, converter typically can provide RS485 interface, and the Modbus communication protocol adopted international standards carries out master-slave communication.The single mode using master-slave mode communicates, and communication mode underaction also cannot realize high-speed communication.Converter cannot realize carrying out network communication between other Fieldbus industry equipment.
2, general protocol conversion chip SPC3, it is impossible to supporting Profibus-DPV0, DPV1 and DPV2 agreement completely, and only adopt support 5V power supply, price is high, and power consumption is high.
3, the LED light of general communication expansion card is all mounted on expansion card, if expansion card is mounted in inside converter, just can not can be visually seen the duty of the communication expansion card of LED light instruction.
4, the PZD parameter of the Profibus-DP communication expansion card of general converter is set by GSD file, it is impossible to set PZD functional parameter by converter inner parameter.
Summary of the invention
The purpose of this utility model is to overcome the defect of prior art, it is provided that a kind of performance safety is stable, simple in construction, the Profibus-DP communication expansion card of the converter of low cost and converter.
For achieving the above object, this utility model adopts the technical scheme that
A kind of Profibus-DP communication expansion card of converter, pluggable on converter, the Modbus protocol data of converter can be converted to Profibus-DP protocol data, including 51 singlechip CPU 1, toggle switch 3, protocol conversion module 5, Profibus Bus isolation module 6, ProfibusDP interface 7, Modbus communication module 8 and RS485 communication interface 9；The RS485 communication interface 9 of Profibus-DP communication expansion card is connected, with the RS485 interface of converter, row data communication of going forward side by side；Modbus communication module 8 is connected with RS485 communication interface 9, and Modbus communication module 8 and converter carry out principal and subordinate's data communication, and converter is as Modbus-RTU slave station, and Profibus-DP communication expansion card is as Modbus-RTU main website；51 singlechip CPU 1 are connected with Modbus communication module 8；Protocol conversion module 5 is connected with 51 singlechip CPU 1, and the Modbus protocol data of converter is converted to Profibus-DP protocol data；Profibus Bus isolation module 6 is connected with protocol conversion module 5, for isolation protective circuit；Profibus-DP interface 7 is connected with Profibus Bus isolation module 6, is exported to Profibus network by Profibus-DP interface 7 by Profibus-DP protocol data after conversion；Outfan and 51 singlechip CPU 1 of toggle switch 3 connect, and the address for communication expansion card is arranged.
Further, described Profibus-DP communication expansion card uses VPC3 protocol conversion chip, VPC3 protocol conversion integrated chip Profibus-DP agreement, compatible Profibus-DPV0, Profibus-DPV1, Profibus-DPV2 agreement.
Further, described Profibus-DP communication expansion card also includes that LED signal processes 4, input and 51 singlechip CPU 1 of LED signal process 4 connect, LED signal processes the outfan of 4 and is connected with the CPU master board of converter, it is incorporated on the guidance panel 14 of converter control LED light to show, for indicating the duty of Profibus-DP communication expansion card.
Further, three LED lights it are respectively equipped with on the guidance panel 14 of converter, it is respectively red LED display lamp, green LED display lamp and yellow led display lamp, LED light signal is connected by the CPU master board with converter, it is incorporated on the guidance panel of converter, controls three LED lights.
Further, described Profibus Bus isolation module 6 uses Profibus interface special chip and half-duplex, the RS485 transceiver of isolation；Profibus bus end baud rate is 9.6kbps to 12Mbps；Profibus-DP interface 7 is Profibus DB9 interface；Being provided with Power convert isolation module 2 between power supply and 51 singlechip CPU 1, described Power convert isolation module 2 exports the DC source of 3.3V and 5V.
A kind of converter, including above-mentioned Profibus-DP communication expansion card, heat dissipation base 11, transducer body 12, upper cover 13, guidance panel 14 and converter master board 15, described transducer body 12 is located on heat dissipation base 11, upper cover 13 is located on transducer body 12, and guidance panel 14 covers and is located on upper cover 13, and both sides above transducer body 12 are located in Profibus-DP communication expansion card and converter master board 15 side by side.
Further, ProfibusDP interface 7 and toggle switch 3 are located at one end of Profibus-DP communication expansion card, and toggle switch 3 is positioned at the side of ProfibusDP interface 7；The the first connection terminal 91 being connected with converter master board 15 is located at the other end of Profibus-DP communication expansion card.
Further, the other end of Profibus-DP communication expansion card is provided with the first connection terminal 91 being connected with converter master board 15, one end margin of converter master board 15 is provided with the second connection terminal 92 being connected terminal 91 docking with first, second connects terminal 92 protrusion extends to outside converter master board 15, the other end of Profibus-DP communication expansion card is provided with and is connected the U-shaped mounting groove 901 that terminal 92 coordinates with second, during installation, second connects in the U-shaped mounting groove 901 that terminal 92 stretches into Profibus-DP communication expansion card, second connects terminal 92 is connected by winding displacement and the first connection terminal 91.
The Profibus-DP communication expansion card of this utility model converter can be used on the converter only providing RS485 interface, using Profibus-DP communication expansion card as the peripheral hardware of converter, the Modbus protocol data of converter is converted to Profibus-DP protocol data by this communication expansion card, thus realize the network communication between other Profibus-DP Fieldbus industry equipment, reduce cost, do not affect the normal use of converter simultaneously；Profibus-DP communication expansion card, can standard configuration as an independent module of converter, it is possible to apolegamy.If as apolegamy, whether user can decide in its sole discretion according to practical situation and choose, the most cost-effective.
Accompanying drawing explanation
Fig. 1 is the Profibus-DP communication expansion card frame diagram of this utility model converter；
Fig. 2 is the exploded view of this utility model converter；
Fig. 3 is the structural representation of this utility model converter；
Fig. 4 is the structural representation of this utility model guidance panel；
Fig. 5 is the structural representation figure of Profibus-DP communication expansion card.
Detailed description of the invention
The embodiment be given below in conjunction with accompanying drawing 1, further illustrates the detailed description of the invention of the Profibus-DP communication expansion card of converter of the present utility model.The Profibus-DP communication expansion card of converter of the present utility model is not limited to the following description.
As shown in Figure 1, the Profibus-DP communication expansion card of this utility model converter, pluggable on converter, the Modbus protocol data of converter can be converted to Profibus-DP protocol data, including 51 singlechip CPU 1, Power convert isolation module 2, toggle switch 3, protocol conversion module 5, Profibus Bus isolation module 6, Profibus DP interface 7, Modbus communication module 8 and RS485 communication interface 9；The RS485 communication interface 9 of Profibus-DP communication expansion card is connected, with the RS485 interface of converter, row data communication of going forward side by side；Modbus communication module 8 is connected with RS485 communication interface 9, and Modbus communication module 8 and converter carry out principal and subordinate's data communication, and converter is as Modbus-RTU slave station, and Profibus-DP communication expansion card is as Modbus-RTU main website；51 singlechip CPU 1 are connected with Modbus communication module 8, and protocol conversion module 5 is connected with 51 singlechip CPU 1, and the Modbus protocol data of converter is converted to Profibus-DP protocol data；Profibus Bus isolation module 6 is connected with protocol conversion module 5, for isolation protective circuit；Profibus-DP interface 7 is connected with Profibus Bus isolation module 6, is exported to Profibus network by Profibus-DP interface 7 by Profibus-DP protocol data after conversion；Outfan and 51 singlechip CPU 1 of toggle switch 3 connect, and the address for communication expansion card is arranged.
The Profibus-DP communication expansion card of this utility model converter is on the converter only providing RS485 interface, using Profibus-DP communication expansion card as the peripheral hardware of converter, the Modbus protocol data of converter is converted to Profibus-DP protocol data by this communication expansion card, thus realize the network communication between other Profibus-DP Fieldbus industry equipment, save R&D costs and cycle, do not affect the normal use of converter simultaneously；Profibus-DP communication expansion card, can standard configuration as an independent module of converter, it is possible to apolegamy.If as apolegamy, whether user can decide in its sole discretion according to practical situation and choose, the most cost-effective.
It addition, be provided with Power convert isolation module 2 between power supply and 51 singlechip CPU 1, described Power convert isolation module 2 exports the DC source of 3.3V and 5V.
Profibus-DP communication expansion card uses VPC3 protocol conversion chip, VPC3 protocol conversion integrated chip Profibus-DP agreement, compatible Profibus-DPV0, Profibus-DPV1, Profibus-DPV2 agreement, supports the supply voltage of 3.3V and 5V simultaneously.Low in energy consumption, longevity of service is not easy heating, and price is low, cost-effective.
The PZD functional parameter of Profibus-DP communication expansion card is set by converter inner parameter or GSD file configuration.Profibus-DP depositor realizes with the GSD file that is mapping through of Modbus depositor, partial parameters can also be set by converter inner parameter, the option of PZD1-PZD10 parameter is increased in converter, can arrange PZD1-PZD10 reading data parameters and write the Modbus parameter that data parameters is the most corresponding with PZD1-PZD10, Profibus-DP communication expansion card periodically reads converter PZD1-PZD10 and reads and writes data parameters.Such as: read data instance with PZD, 0 represents invalid, 1 represents basic running frequency, modbus address 0x0010, and 2 represent setpoint frequency, modbus address 0x3400,3 represent busbar voltage, modbus address 0x3402, and 4 represent output voltage, N number of data such as modbus address 0x3403, PZD1-PZD10 reads data and may be set to any one in these N number of data respectively.It is set to 2 when PZD1 being read data on converter display operating panel, the most now PZD1 is read parameter and corresponds to the setpoint frequency of modbus address 0x3400；If PZD1 being read data be set to 0, then read, according to the PZD1 of configuration in GSD file, the modbus address data that parameter is corresponding.
As shown in Figure 1-2, Profibus-DP communication expansion card also includes that LED signal processes 4, input and 51 singlechip CPU 1 of LED signal process 4 connect, LED signal processes the outfan of 4 and is connected with the CPU master board of converter, it is incorporated on the guidance panel 14 of converter three LED lights of control to show, for indicating the duty of Profibus-DP communication expansion card.Three LED lights it are respectively equipped with on the guidance panel 14 of converter, being respectively red LED display lamp, green LED display lamp and yellow led display lamp, LED light signal is connected by the CPU master board with converter, it is incorporated on the guidance panel of converter, controls three LED lights.It is respectively provided with red LED display lamp on the guidance panel 14 of converter, green LED display lamp and three installation through holes of yellow led display lamp, red LED display lamp, green LED display lamp and yellow led display lamp stretch in three installation through holes fixing from side respectively.Such as: when red, Profibus-DP card and converter serial ports successful connection and proper communication；Red light dodge, successful connection but communicate wrong；Red light goes out, and connects unsuccessful.Amber light is bright, Profibus-DP card and main website proper communication；Amber light dodge, successful connection but communicate wrong；Amber light goes out, and connects unsuccessful.The duty of Profibus-DP communication expansion card shows, more intuitively on the guidance panel of converter.
Described Profibus Bus isolation module 6 uses Profibus interface special chip and half-duplex, the RS485 transceiver of isolation.Field Bus Interface Circuit is the circuit that Profibus-DP protocol conversion chip VPC3+C is connected with fieldbus side; because Profibus-DP can reach the speed of 12Mbps; so the requirement for interface circuit is the highest; select Profibus interface special chip; half-duplex, the RS485 transceiver of isolation; containing protective separation circuit, the wiring of hardware circuit can be reduced, improve the stability of communication.
Toggle switch, the address for communication expansion card is arranged, and address value is equal to ON gear weights sum, and wherein 1 is lowest order.The station address that PROFIBUS-DP supports, by 1 to 0x7D, in order to prevent address procedures from the conflict of address occurring, uses the toggle switch of eight, with rear seven addressing carrying out 128.Because communication expansion card is as the slave station of PROFIBUS-DP communication, it is necessary to there is the address do not conflicted with other stations, so manually set the address of communication expansion card by the toggle switch of 8, then read in by CPU and write VPC3 and specifically store position.Profibus bus end baud rate is 9.6kbps to 12Mbps.
Finally, Profibus-DP interface 7 is Profibus DB9 interface.Profibus DB9 interface is standard Profibus DB9 interface, is the AN connector of Profibus, and in order to connect Profibus network, this interface available connects communication adapter to PROFIBUS-DP system.
As shown in Figure 2-5, this utility model converter, including above-mentioned Profibus-DP communication expansion card, heat dissipation base 11, transducer body 12, upper cover 13, guidance panel 14 and converter master board 15, described transducer body 12 is located on heat dissipation base 11, and upper cover 13 is located on transducer body 12, guidance panel 14 covers and is located on upper cover 13, and both sides above transducer body 12 are located in Profibus-DP communication expansion card and converter master board 15 side by side.
As shown in figures 2 and 5, ProfibusDP interface 7 and toggle switch 3 are located at one end of Profibus-DP communication expansion card, and toggle switch 3 is positioned at the side of ProfibusDP interface 7；The the first connection terminal 91 being connected with converter master board 15 is located at the other end of Profibus-DP communication expansion card.
As shown in figures 2 and 5, the other end of Profibus-DP communication expansion card is provided with the first connection terminal 91 being connected with converter master board 15, first connection terminal 91 is double straight cutting socket, one end margin of converter master board 15 is provided with the second connection terminal 92 being connected terminal 91 docking with first, second connection terminal 92 is the double socket of bent angle, second connects terminal 92 protrusion extends to outside converter master board 15, the other end of Profibus-DP communication expansion card is provided with and is connected the U-shaped mounting groove 901 that terminal 92 coordinates with second, during installation, second connects in the U-shaped mounting groove 901 that terminal 92 stretches into Profibus-DP communication expansion card, second connects terminal 92 is connected by winding displacement and the first connection terminal 91；Positioned by U-shaped mounting groove 901, connected by winding displacement and avoid the excessive demand to machining accuracy.It is all to be connected terminal 92 by the first connection terminal 91 with the second of converter master board to connect that the supply voltage of Profibus-DP communication expansion card, RS485 communication interface 9, LED signal process the signal of 4.
Above content is to combine concrete preferred implementation further detailed description of the utility model, it is impossible to assert that of the present utility model being embodied as is confined to these explanations.For this utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, it is also possible to make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (8)
1. the Profibus-DP communication expansion card of a converter, it is characterized in that: pluggable on converter, the Modbus protocol data of converter can be converted to Profibus-DP protocol data, including 51 singlechip CPU (1), toggle switch (3), protocol conversion module (5), Profibus Bus isolation module (6), ProfibusDP interface (7), Modbus communication module (8) and RS485 communication interface (9)；The RS485 communication interface (9) of Profibus-DP communication expansion card is connected, with the RS485 interface of converter, row data communication of going forward side by side；Modbus communication module (8) is connected with RS485 communication interface (9), Modbus communication module (8) and converter carry out principal and subordinate's data communication, converter is as Modbus-RTU slave station, and Profibus-DP communication expansion card is as Modbus-RTU main website；51 singlechip CPU (1) are connected with Modbus communication module (8)；Protocol conversion module (5) is connected with 51 singlechip CPU (1), and the Modbus protocol data of converter is converted to Profibus-DP protocol data；Profibus Bus isolation module (6) is connected, for isolation protective circuit with protocol conversion module (5)；Profibus-DP interface (7) is connected with Profibus Bus isolation module (6), and after changing, Profibus-DP protocol data is exported to Profibus network by Profibus-DP interface (7)；The outfan of toggle switch (3) and 51 singlechip CPU (1) connect, and the address for communication expansion card is arranged.
The Profibus-DP communication expansion card of converter the most according to claim 1, it is characterized in that: described Profibus-DP communication expansion card uses VPC3 protocol conversion chip, VPC3 protocol conversion integrated chip Profibus-DP agreement, compatible Profibus-DPV0, Profibus-DPV1, Profibus-DPV2 agreement.
The Profibus-DP communication expansion card of converter the most according to claim 1, it is characterized in that: described Profibus-DP communication expansion card also includes that LED signal processes (4), LED signal processes input and 51 singlechip CPU (1) connection of (4), LED signal processes the outfan of (4) and is connected with the CPU master board of converter, the upper LED light that controls of guidance panel (14) being incorporated into converter shows, for indicating the duty of Profibus-DP communication expansion card.
The Profibus-DP communication expansion card of converter the most according to claim 3, it is characterized in that: on the guidance panel (14) of converter, be respectively equipped with three LED lights, it is respectively red LED display lamp, green LED display lamp and yellow led display lamp, LED light signal is connected by the CPU master board with converter, it is incorporated on the guidance panel of converter, controls three LED lights.
The Profibus-DP communication expansion card of converter the most according to claim 1, it is characterised in that: described Profibus Bus isolation module (6) uses Profibus interface special chip and half-duplex, the RS485 transceiver of isolation；Profibus bus end baud rate is 9.6kbps to 12Mbps；Profibus-DP interface (7) is Profibus DB9 interface；Power convert isolation module (2), the DC source of described Power convert isolation module (2) output 3.3V and 5V it is provided with between power supply and 51 singlechip CPU (1).
6. a converter, it is characterized in that: include the Profibus-DP communication expansion card as described in claim 1-5 is arbitrary, heat dissipation base (11), transducer body (12), upper cover (13), guidance panel (14) and converter master board (15), described transducer body (12) is located on heat dissipation base (11), upper cover (13) is located on transducer body (12), guidance panel (14) covers and is located on upper cover (13), both sides, transducer body (12) top are located in Profibus-DP communication expansion card and converter master board (15) side by side.
Converter the most according to claim 6, it is characterized in that: ProfibusDP interface (7) and toggle switch (3) are located at one end of Profibus-DP communication expansion card, toggle switch (3) is positioned at the side of ProfibusDP interface (7)；The other end of Profibus-DP communication expansion card is located in the first connection terminal (91) being connected with converter master board (15).
nullConverter the most according to claim 6，It is characterized in that: the other end of Profibus-DP communication expansion card is provided with the first connection terminal (91) being connected with converter master board (15)，One end margin of converter master board (15) is provided with and is connected the second connection terminal (92) that terminal (91) docks with first，Second connects terminal (92) protrusion extends to converter master board (15) outward，The other end of Profibus-DP communication expansion card is provided with and is connected the U-shaped mounting groove (901) that terminal (92) coordinates with second，During installation，Second connects in the U-shaped mounting groove (901) that terminal (92) stretches into Profibus-DP communication expansion card，Second connects terminal (92) connects terminal (91) connection by winding displacement and first.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620188712.5U CN205721755U (en) | 2016-03-11 | 2016-03-11 | The Profibus-DP communication expansion card of converter and converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620188712.5U CN205721755U (en) | 2016-03-11 | 2016-03-11 | The Profibus-DP communication expansion card of converter and converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205721755U true CN205721755U (en) | 2016-11-23 |
Family
ID=57334447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620188712.5U Active CN205721755U (en) | 2016-03-11 | 2016-03-11 | The Profibus-DP communication expansion card of converter and converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205721755U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968738A (en) * | 2018-01-12 | 2018-04-27 | 深圳市英威腾电气股份有限公司 | A kind of slave, communication expansion card and group network system |
| CN109753442A (en) * | 2019-01-10 | 2019-05-14 | 郑州云海信息技术有限公司 | A kind of method and system of settlement server backboard BMC lighting VPP address conflict |
| CN114039898A (en) * | 2021-11-05 | 2022-02-11 | 珠海格力电器股份有限公司 | Communication system |
| CN114488871A (en) * | 2021-12-23 | 2022-05-13 | 深圳市海浦蒙特科技有限公司 | Control method, frequency converter and computer readable storage medium |
-
2016
- 2016-03-11 CN CN201620188712.5U patent/CN205721755U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968738A (en) * | 2018-01-12 | 2018-04-27 | 深圳市英威腾电气股份有限公司 | A kind of slave, communication expansion card and group network system |
| CN109753442A (en) * | 2019-01-10 | 2019-05-14 | 郑州云海信息技术有限公司 | A kind of method and system of settlement server backboard BMC lighting VPP address conflict |
| CN109753442B (en) * | 2019-01-10 | 2022-02-18 | 郑州云海信息技术有限公司 | Method and system for solving VPP address conflict of BMC lighting of server backboard |
| CN114039898A (en) * | 2021-11-05 | 2022-02-11 | 珠海格力电器股份有限公司 | Communication system |
| CN114488871A (en) * | 2021-12-23 | 2022-05-13 | 深圳市海浦蒙特科技有限公司 | Control method, frequency converter and computer readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205721755U (en) | The Profibus-DP communication expansion card of converter and converter | |
| CN110799007B (en) | Industrial control computer and industrial control computer communication protection method | |
| CN107257250A (en) | A kind of electric power wireless communication terminal based on Micro USB interfaces | |
| CN104391814A (en) | Parameter-regulable universal RS232-CAN (Controller Area Network) bus adapter | |
| CN106773956A (en) | The conversion equipment and method of short-wave radio set data communication interface | |
| CN210183618U (en) | Communication gateway and lighting system based on power line carrier technology | |
| CN208369858U (en) | A kind of mine personnel positioning system | |
| CN103546297A (en) | CAN (controller area network) bus repeater for mining | |
| CN103139054A (en) | Gateway based on konnex (KNX) protocol and digital addressable lighting interface (DALI) protocol | |
| CN214042097U (en) | PLC serial port communication extension module capable of customizing protocol | |
| CN205608716U (en) | Multiunit optical module communication interface switching circuit | |
| CN207652477U (en) | A kind of Modbus-CAN protocol conversion apparatus | |
| CN211018828U (en) | Multifunctional wireless repeater | |
| CN207337391U (en) | A kind of data collector | |
| CN203859765U (en) | Adapter for conversion from single-path wired cable to ethernet bus | |
| CN207184485U (en) | A kind of optical module switching device and system | |
| CN206865497U (en) | A kind of adjustable industrial fireproof wall device of interface | |
| CN206209355U (en) | A kind of intelligent slave station device of alternating current-direct current driver | |
| CN103188350B (en) | Integrated communication adapter | |
| CN221081343U (en) | Communication board based on DeviceNet protocol | |
| CN215818184U (en) | Multimode communication gateway device | |
| CN209002002U (en) | A kind of interchanger with Zigbee module | |
| CN214175082U (en) | Communication interface concentrator | |
| RU127564U1 (en) | USB / RS-485 AUTOMATIC INTERFACE CONVERTER | |
| CN220368720U (en) | Network isolation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |