CN207853917U - A kind of slave, communication expansion card and group network system - Google Patents
A kind of slave, communication expansion card and group network system Download PDFInfo
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- CN207853917U CN207853917U CN201820051983.5U CN201820051983U CN207853917U CN 207853917 U CN207853917 U CN 207853917U CN 201820051983 U CN201820051983 U CN 201820051983U CN 207853917 U CN207853917 U CN 207853917U
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Abstract
The utility model discloses a kind of slave, communication expansion card and group network system, wherein group network systems to include：Address card, host and slave are extended, the slave includes the first preset interface, and the extension address card includes communication bus interface and the second preset interface；The host is connect by communication bus with the communication bus interface of the extension address card, and the slave is connected to second preset interface by first preset interface and is connect with the extension address card with realizing；Wherein, the extension address card carries out protocol format conversion to realize the communication between the host and slave according to the type of the communication bus, the first preset interface and the second preset interface.The group network system is unified by the interface of slave by the way that the first preset interface is arranged on slave, recycles extension address card to meet different type communication bus networking requirements, and then improve the flexibility of group network system.
Description
Technical field
The utility model is related to a kind of networking control technology field more particularly to slave, communication expansion card and group network systems.
Background technology
Currently, existing equipment carries out mostly using direct networking or indirect networking mode when networking, such as more transmission frequency conversions
The networking plan of device control system, the control system include multiple frequency converters, and one of frequency converter is as host, other frequency conversions
Device is as slave.The mode of direct networking or indirect networking can be used in the control system of the frequency converter, and direct networking, that is, host is straight
Connect with each slave in system realized by communication bus networking host to respectively from machine monitoring, the program slave communication interface
Fixed, communication bus type used by networking is single, cannot meet the networking requirements of different communication buses simultaneously, and system can expand
Malleability is poor.Indirect networking, that is, host only establishes communication connection with first slave, which has protocol conversion function,
By host communication protocol conversion at internal fixed communications protocol, inside is established by internal communication interface and other each slaves
Communication network.First slave belongs to slave station property for host, then belongs to main website property for other slaves.Relative to direct group
Net can realize the simple monitoring to other slaves by the first slave if even if the program is without host.But indirectly networking according to
So there is a problem of identical as direct networking, i.e., communication bus type used by networking is single, flexibility is poor, cannot meet not
Same type communication bus networking requirements.
Utility model content
The embodiments of the present invention, which provide a kind of slave and group network system, the group network system, can meet different type
Communication bus networking requirements, increase the flexibility of networking.
In a first aspect, the utility model provides a kind of group network system, which includes：Extend address card, host
And slave；The slave includes the first preset interface, and the extension address card includes communication bus interface and the second preset interface；
The host is connect by communication bus with the communication bus interface of the extension address card, and the slave is pre- by described first
It is connect with the extension address card if interface is connected to second preset interface with realizing；Wherein, the extension address card root
Protocol format is carried out according to the type of the communication bus, the first preset interface and the second preset interface to convert to realize the host
Communication between slave.
In the group network system of the utility model, the extension address card includes interface type recognition unit and the first data
Processing unit, the slave further include the second data processing unit；The interface type recognition unit communication for identification
Bus, the type of the first preset interface and the second preset interface simultaneously select corresponding communications protocol to receive the host or slave
The communication data of transmission；First data processing unit is used for the class according to first preset interface and the second preset interface
The communication data is converted into protocol data to realize the communication between the host and slave by type.
In the group network system of the utility model, the slave further includes internal communication interface；The slave includes first
Slave and at least one second slave；First slave is connected to second preset interface by first preset interface
It is connect with the extension address card with realizing；At least one second slave passes through the internal communication with first slave
Interface is connected to realize indirect networking.
In the group network system of the utility model, first slave includes master function unit and the second data processing list
Member；The master function unit controls first slave according to enable signal and is in master station mode；Under the master station mode,
Second data processing unit is used to carry out protocol format according to first preset interface and the type of internal communication interface
Conversion is to realize the extension communication of the address card by first slave and at least one second slave.
In the group network system of the utility model, the extension address card is identical as the quantity of slave and is at least two
It is a；Each slave is connected to second preset interface to realize and corresponding extension by first preset interface
Address card is connected to realize direct networking.
In the group network system of the utility model, the slave further includes internal communication interface, at least two slaves
It is connected by the internal communication interface；The host is used to send control signal to the extension address card to control the expansion
It opens up the working condition of address card and sends enable signal for the one thereto slave and be in master to control the slave
It stands pattern, to realize the switching of direct networking and indirect networking.
In the group network system of the utility model, first preset interface includes the first main interface and the first auxiliary interface；
The extension address card includes main extension address card and auxiliary extension address card；First main interface and the main extension address card
The second preset interface connection, the first auxiliary interface with it is described it is auxiliary extend address card the second preset interface connect；The master
The communication bus interface of extension address card and auxiliary extension address card is connect by the communication bus with the host.
In the group network system of the utility model, first preset interface and the second preset interface are SPI interface；Institute
It is frequency converter to state host and slave.
Second aspect, the utility model additionally provide a kind of slave, which includes above-mentioned any one group network system
In slave.
The third aspect, the utility model additionally provide a kind of communication expansion card, which includes above-mentioned arbitrary
A kind of communication expansion card in group network system.
The slave and group network system that the embodiments of the present invention provide, the group network system include：Extend address card, host
And slave, the slave include the first preset interface, the extension address card includes communication bus interface and the second preset interface；
The host is connect by communication bus with the communication bus interface of the extension address card, and the slave is pre- by described first
It is connect with the extension address card if interface is connected to second preset interface with realizing；Wherein, the extension address card root
Protocol format is carried out according to the type of the communication bus, the first preset interface and the second preset interface to convert to realize the host
Communication between slave.The group network system is unified by the interface of slave by the way that the first preset interface is arranged on slave, then profit
Meet different type communication bus networking requirements with extension address card, and then improves the flexibility of group network system.
Description of the drawings
It is required in being described below to embodiment to make in order to illustrate more clearly of the utility model embodiment technical solution
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the utility model, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the structural schematic diagram for the group network system that one embodiment of the utility model provides；
Fig. 2 is the structural schematic diagram for the group network system that the utility model embodiment provides；
Fig. 3 is the structural schematic diagram for the group network system that another embodiment of the utility model provides；
Fig. 4 is the structural schematic diagram for the group network system that the utility model embodiment provides；
Fig. 5 is the structural schematic diagram for the group network system that another embodiment of the utility model provides；
Fig. 6 is the structural schematic diagram for the group network system that the utility model another embodiment provides.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that described embodiment is the utility model a part of the embodiment, rather than whole implementation
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
It should be appreciated that ought use in this specification and in the appended claims, term " comprising " and "comprising" instruction
Described feature, entirety, step, operation, the presence of element and/or component, but one or more of the other feature, whole is not precluded
Body, step, operation, element, component and/or its presence or addition gathered.
The embodiments of the present invention provide a kind of group network system, the group network system concretely frequency converter networking system
System, naturally it is also possible to be other equipment group network system.
Referring to Fig. 1, Fig. 1 is the structural schematic diagram for the group network system that one embodiment of the utility model provides.Such as Fig. 1 institutes
Show, which includes：Extend address card 11, host 12 and slave 13.Wherein, slave 13 includes the first preset interface
131, extension address card 11 includes communication bus interface 111 and the second preset interface 112.Host 12 by communication bus 100 with
The communication bus interface 111 for extending address card 11 connects, and slave 13 is connected to the second preset interface by the first preset interface 131
112 to realize and extend the connection of address card 11.Thus it extends address card 11, host 12 and slave 13 and forms group network system.
Wherein, extension address card 11 carries out protocol format turn according to the type of communication bus 100 and the second preset interface 112
It changes to realize the communication between host 12 and slave 13, the type of first preset interface 131 and the second preset interface 112 is phase
Matching, such as the first preset interface 131 are identical with the type of the second preset interface 112.The extension address card includes multiple and different
The extension address card of type, specifically, the type according to the different extension address cards of communication bus type includes Modbus
(Modicon ' s BUS, Modbus communications protocol) type, (Controller Area Network, framework are controlling CanOPEN
Local network) type or EtherCat (Ethernet for Control Automation Technology, Ethernet control
Automatic technology) type etc., different types corresponds to different ID numbers, which marks different types of extension address card.
Alternatively, same extension address card includes the communication bus interface of multiple and different types.
Specifically, as shown in Fig. 2, extension address card 11 includes that the first data processing unit 113 and interface type identification are single
Member 114.In the present embodiment, the first preset interface 131 is identical with the type of the second preset interface 112, is specifically SPI
(Serial Peripheral Interface, Serial Peripheral Interface (SPI)) interface, such as the SPI interface 1310 and SPI interface in Fig. 2
1120.Wherein, communication bus interface 111 connects including RS485 communication bus interfaces, Can communication bus interfaces or ethernet communication
Mouthful, i.e. the type of corresponding communication bus 100 can be RS485 or CAN or ethernet communication.Certainly, in other embodiment
In, the type of communication bus 100, the first preset interface 131 and the second preset interface 112 may be other types, herein not
It limits.
Wherein, communication bus 100, the first preset interface 131 and second are default for identification for interface type recognition unit 114
The type of interface 112 and the communication data for selecting corresponding communications protocol to be sent with receiving host 12 or slave 13.First number
It is used to be converted the communication data according to the type of the first preset interface 131 and the second preset interface 112 according to processing unit 113
At protocol data to realize the communication between host 12 and slave 13.For example CanOPEN communications protocol receiving hosts will be used to send out
The communication data sent, and the communication data is converted into slave 13 by SPI protocol data transmission according to SPI interface type.
Specifically, the ID number of address card can be extended by identification to determine the classification of communication bus, the first preset interface
131 and second the classification of preset interface 112 can also be determined by similar methods.
Correspondingly, slave 13 includes master function unit 133 and the second data processing unit 134；Master function unit
133 control slave 13 according to enable signal is in master station mode, which can be by host 12 by extending address card 11
It is sent to the master function unit 133 of slave 13, makes slave 13 be in master station mode to open 13 master function of slave.When from
When machine 13 is in master station mode, as shown in Figure 1, the slave 13 can simply control other slaves, such as slave 2 or slave 3
Deng.
Meanwhile under the master station mode, the second data processing unit 134 is used for according to the first preset interface 131 and interior
The type of portion's communication interface 132 carry out protocol format conversion with realize the extension address card by slave 1 and other slaves (from
Machine 2 or slave 3 etc.) communication.For example, the type of internal communication interface 132 is RS485 types, received using SPI interface
SPI protocol data conversion at the protocol formatted data that suitable RS485 interfaces transmit with realize extension address card 11 by slave 1 with
Other slaves communicate.
Group network system in above-described embodiment, since extension address card has multiple types or the extension address card same
When be equipped with a plurality of types of interfaces, thus applicable different types of communication bus, the communication bus be also referred to as fieldbus,
When carrying out networking with different fieldbus, it is only necessary to replace extension address card corresponding with the fieldbus, thus increase
The flexibility of group network system.
Group network system in above-described embodiment is unified on slave to be provided with the first preset interface, and has used including the
The extension address card of two preset interfaces and communication bus interface so that the group network system can meet different type communication bus networking
Demand solves the problems, such as that existing networking mode is single, improves the flexibility of group network system, additionally unified connecing for slave
Mouthful, convenient for management.
Referring to Fig. 3, Fig. 3 is the structural schematic diagram for the group network system that another embodiment of the utility model provides.Such as Fig. 3 institutes
Show, which includes extension address card 11, host 12 and multiple slaves 13, and the quantity of slave 13 is multiple, and should be from
Machine 13 further includes internal communication interface 132, and internal communication interface 132 establishes communication connection each other for slave 13.Specifically, from
Machine 13 includes the first slave (slave 1) and at least one second slave (slave 2 to slave N), and wherein N is positive integer；Described
One slave is connected to the second preset interface 112 to realize and extend the connection of address card 11 by the first preset interface 131；At least one
A second slave is connect by internal communication interface 132 with the first slave to realize indirect networking.
In the present embodiment, assume that slave 1 is the first slave, other slaves are the second slave；It can certainly assume
One of other slaves are the first slave, for example slave 2 or slave 3 are the first slave, and opposite other slaves are the second slave.
Specifically, shown in Figure 2, which includes at master function unit 133 and the second data
Manage unit 134.Master function unit 133 controls first slave according to enable signal and is in master station mode.When first slave
Under the master station mode, the second data processing unit 134 is used for according to the first preset interface 131 and internal communication interface
132 type carry out protocol format conversion with realize extension address card 11 by first slave at least one described second from
The communication of machine.
In the present embodiment, the first preset interface and the second preset interface are SPI interface；Internal communication interface can be
CAN style interfaces or RS485 style interfaces.
For example, as shown in figure 3, the communication data from host that SPI communications receive is used main website by first slave
Function is handed down to the second slave, i.e. slave 2,3 to slave N by internal communication network.Each second slave is also by interior simultaneously
Respective status information is uploaded to slave 1 by portion's communication network, is transmitted to extension address card 11 by SPI communications by slave 1, extension is logical
News card 11 uploads host 12 again, realizes monitoring of the host 12 to each slave in group network system.
In addition, in order to increase the stability of group network system, increase redundant interface design on slave.It is specific as shown in figure 4,
First preset interface 131 includes the first main interface 1311 and the first auxiliary interface 1312.Address card 11 is extended to communicate including main extension
Block 11a and auxiliary extension address card 11b, wherein main extension address card 11a and auxiliary extension address card 11b have with extension address card 11
There is identical structure.Wherein, the first main interface 1311 connect formation first with the second preset interface 112 of main extension address card 11a
Networking circuit 101, the first auxiliary interface 1312 connect with the second preset interface 112 of auxiliary extension address card 11b and form the second networking
Circuit 102 so that main extension address card 11a and auxiliary extension address card 11b are connect with slave 13.Main extension address card 11a and
The communication bus interface 111 of auxiliary extension address card 11b is connect by communication bus 100 with host 12.In practical application, first
Networking circuit 101 is used as main scheme, and when the first networking circuit 101 occurs abnormal, host 12 controls the second networking electricity
The work of road 102 is to replace the first networking circuit 101, therefore the second networking circuit 102 is optionally, and a master one is consequently formed
Standby networking mode, and then increase the stability of system.
Referring to Fig. 5, Fig. 5 is the structural schematic diagram for the group network system that another embodiment of the utility model provides.Such as Fig. 5 institutes
Show, in group network system in Figure 5, extension address card 11 is identical as the quantity of slave 13 and is at least two.Each slave
13 the second preset interface 112 is connected to by the first preset interface 131 with realize with corresponding extension address card 11 connect with
Realize direct networking.
Specifically, as shown in figure 5, extension address card 11 includes extension address card 1, extension address card 2, extension address card 3
To extension address card N；Correspondingly, slave 13 includes slave 1, slave 2, slave 3 to slave N, to ensure that each slave 13 has
One extension address card 11 is corresponding thereto.
Wherein, slave 13 includes the first preset interface 131, and extension address card 11 includes communication bus interface 111 and second
Preset interface 112.Host 12 is connect by communication bus 100 with the communication bus interface 111 of extension address card 11, and slave 13 is logical
It crosses the first preset interface 131 and is connected to the second preset interface 112 to realize and extend the connection of address card 11.Thus a slave 13
It is to establish to communicate to connect with host 12 by an extension address card 11, therefore the group network system in Fig. 5 is known as direct networking.
In the present embodiment, the first preset interface 131 is identical with the type of the second preset interface 112, for example is that SPI connects
Mouthful.Wherein, which sends out the communication data from host 12 that SPI communications receive by extending address card 11
Give its corresponding slave 13.Respective status information is uploaded to host 12 by slave 13 also by extension address card 11 simultaneously, real
Existing monitoring of the host 12 to each slave 13 in group network system.
Referring to Fig. 6, Fig. 6 is the structural schematic diagram for the group network system that the utility model another embodiment provides.Fig. 6's
In group network system, slave 13 further includes internal communication interface 132, and at least two slaves 13 are connected by internal communication interface 132.
For example slave 1 is connect by internal communication interface 132 with slave 2, slave 2 is connect by internal communication interface 132 with slave 3
Deng.
Wherein, in the group network system of Fig. 6, host 12 leads to the extension transmission control signal of address card 11 for controlling extension
The working condition of news card 11 and thereto a slave 13 send enable signal and are in master station mode for controlling the slave 13
To realize the switching of direct networking and indirect networking.
For example, host 12 by communication bus 100 to extension address card 1, extension address card 2, extension address card 3 to extension
Address card N sends control signal, and control extension address card 1 is in running order respectively and extends address card 2, extension address card
3 to extension address card N are in standby, and wherein standby mode is without work；Meanwhile a slave 13 is sent thereto
Enable signal, for example control the slave 1 to the transmission of slave 1 enable signal and be in master station mode, since other slaves are by interior
Portion's communication interface 132 is connect with the slave 1, therefore can original direct networking mode be switched to indirect networking mode.By
This, further increases the flexibility of group network system, and ensure that the stability of group network system.
Please shown referring to Fig.1 herein, the utility model additionally provides a kind of slave 13, which is applied to networking system
System, the group network system include communication expansion card 11 and host 12, and slave 13 includes the first preset interface 131, extends address card 11
Including communication bus interface 111 and the second preset interface 112；Host 11 is total by the communication of communication bus and extension address card 11
Line interface 111 connects, and slave 13 is connected to the second preset interface 112 to realize and extend communication by the first preset interface 131
11 connection of card；Wherein, extension address card 11 carries out protocol format according to the type of the communication bus and the second preset interface 112
Conversion is to realize the communication between host 11 and slave 13.
In one embodiment, the slave 13 and host 12 are frequency converter, and wherein the structure of host 12 can be with slave 13
Structure is identical.
Wherein, the type of first preset interface 131 and the second preset interface 112 is to match, for example first default connects
Mouthfuls 131 and second preset interface 112 be SPI interface.Host 11 and slave 13 are frequency converter.
Specifically, as depicted in figs. 1 and 2, which further includes internal communication interface 132, and internal communication interface 132 is used
Communication connection is established each other in slave 13.Specifically, slave 13 includes the first slave (slave 1) and at least one second slave
(slave 2 to slave N), wherein N are positive integer；First slave is connected to second by the first preset interface 131 and default connects
Mouth 112 is to realize and extend the connection of address card 11；At least one second slave and the first slave pass through internal communication interface
132 connections are to realize indirect networking.
In this example, it is assumed that slave 1 is the first slave, other slaves are the second slave；It can certainly assume it
One of his slave is the first slave, for example slave 2 or slave 3 are the first slave, and opposite other slaves are the second slave.
Specifically, shown in Figure 2, which includes at master function unit 133 and the second data
Manage unit 134.Master function unit 133 controls first slave according to enable signal and is in master station mode.When first slave
Under the master station mode, the second data processing unit 134 is used for according to the first preset interface 131 and internal communication interface
132 type carry out protocol format conversion with realize extension address card 11 by first slave at least one described second from
The communication of machine.
In the present embodiment, as shown in figure 4, the first preset interface 131 of slave 13 includes the first main interface 1311 and the
One auxiliary interface 1312；First main interface 1311 is connect with the second preset interface 112 of main extension address card 11a, the first auxiliary interface
1312 connect with the second preset interface 112 of auxiliary extension address card 11b.A master one is consequently formed for networking mode, and then increases
The stability of system.
Referring once again to Fig. 1, the embodiments of the present invention additionally provide a kind of expanding communication card 11, are applied to networking system
System.The group network system further includes host 12 and slave 13, and slave 13 includes the first preset interface 131, and extension address card 11 includes
Communication bus interface 111 and the second preset interface 112；Host 11 is connect by the communication bus of communication bus and extension address card 11
Mouth 111 connects, and slave 13 is connected to the second preset interface 112 to realize and extend address card 11 by the first preset interface 131
Connection；Wherein, extension address card 11 carries out protocol format conversion according to the type of the communication bus and the second preset interface 112
To realize the communication between host 11 and slave 13.
In the present embodiment, as shown in Fig. 2, extension address card 11 includes interface type recognition unit 114 and the first data
Processing unit 113；The type of the communication bus and the second preset interface 112 is simultaneously for identification for interface type recognition unit 113
The communication data for selecting corresponding communications protocol to be sent with receiving host 12 or slave 13；First data processing unit 113 is used for
The communication data is converted into protocol data to realize between host 12 and slave 13 according to the type of the second preset interface 112
Communication.
In the present embodiment, as shown in figure 4, extension address card 11 includes main extension address card 11a and auxiliary extension address card
11b.Correspondingly, the first preset interface 131 includes the first main interface 1311 and the first auxiliary interface 1312；First main interface 1311
It is connect with the second preset interface 112 of main extension address card 11a, the first auxiliary interface 1312 and the second of auxiliary extension address card 11b
Preset interface 112 connects；The communication bus interface 111 of main extension address card 11a and auxiliary extension address card 11b are by described logical
News bus is connect with host 12.A master one is consequently formed for networking mode, and then increases the stability of system.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in various
Equivalent modifications or substitutions, these modifications or substitutions should be covered within the scope of the utility model.Therefore, this practicality
Novel protection domain should be subject to the protection scope in claims.
Claims (10)
1. a kind of group network system, which is characterized in that including：Extend address card, host and slave；The slave includes first default
Interface, the extension address card includes communication bus interface and the second preset interface；The host by communication bus with it is described
Extend the communication bus interface connection of address card, the slave is connected to described second by first preset interface and default connects
Mouth is connect with realizing with the extension address card；Wherein, the extension address card connects according to the communication bus and second are default
The type of mouth carries out protocol format and converts to realize the communication between the host and slave.
2. group network system according to claim 1, which is characterized in that the extension address card includes that interface type identification is single
Member and the first data processing unit；The interface type recognition unit communication bus and the second preset interface for identification
Type simultaneously selects corresponding communications protocol to receive the communication data that the host or slave are sent；The first data processing list
Member for the communication data is converted by protocol data according to the type of second preset interface with realize the host and
Communication between slave.
3. group network system according to claim 1, which is characterized in that the slave further includes internal communication interface；It is described
Slave includes the first slave and at least one second slave；First slave is connected to described by first preset interface
Second preset interface is connect with realizing with the extension address card；At least one second slave passes through with first slave
The internal communication interface connection is to realize indirect networking.
4. group network system according to claim 3, which is characterized in that first slave includes master function unit and
Two data processing units；The master function unit controls first slave according to enable signal and is in master station mode；Institute
It states under master station mode, second data processing unit is used for the type according to first preset interface and internal communication interface
Protocol format conversion is carried out to realize that the extension address card passes through first slave and at least one second slave
Communication.
5. group network system according to claim 1, which is characterized in that the extension address card it is identical as the quantity of slave and
It is at least two；Each slave second preset interface is connected to by first preset interface with realize with
Corresponding extension address card connection is to realize direct networking.
6. group network system according to claim 5, which is characterized in that the slave further includes internal communication interface, at least
Two slaves are connected by the internal communication interface；The host is used to send control signal to the extension address card
To control the working condition of the extension address card and send enable signal for the one thereto slave to control
It states slave and is in master station mode, to realize the switching of direct networking and indirect networking.
7. group network system according to claim 1, which is characterized in that first preset interface include the first main interface and
First auxiliary interface；The extension address card includes main extension address card and auxiliary extension address card；First main interface with it is described
The second preset interface connection of main extension address card, the second preset interface of the first auxiliary interface and the auxiliary extension address card
Connection；The communication bus interface of the main extension address card and auxiliary extension address card passes through the communication bus and the host
Connection.
8. group network system according to claim 1, which is characterized in that first preset interface and the second preset interface are equal
For SPI interface；The host and slave are frequency converter.
9. a kind of slave, which is characterized in that including the slave in any one group network system described in claim 1 to 8.
10. a kind of communication expansion card, which is characterized in that including logical in any one group network system described in claim 1 to 8
Interrogate expansion card.
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| CN201820051983.5U CN207853917U (en) | 2018-01-12 | 2018-01-12 | A kind of slave, communication expansion card and group network system |
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| CN201820051983.5U CN207853917U (en) | 2018-01-12 | 2018-01-12 | A kind of slave, communication expansion card and group network system |
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Cited By (3)
| 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 |
| CN115396256A (en) * | 2022-09-14 | 2022-11-25 | 江苏安科瑞电器制造有限公司 | RS 485-based networking mode for rapidly acquiring data |
| CN117579423A (en) * | 2024-01-16 | 2024-02-20 | 南京德克威尔自动化有限公司 | Bus extension module and communication method using same |
-
2018
- 2018-01-12 CN CN201820051983.5U patent/CN207853917U/en active Active
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 |
| CN115396256A (en) * | 2022-09-14 | 2022-11-25 | 江苏安科瑞电器制造有限公司 | RS 485-based networking mode for rapidly acquiring data |
| CN117579423A (en) * | 2024-01-16 | 2024-02-20 | 南京德克威尔自动化有限公司 | Bus extension module and communication method using same |
| CN117579423B (en) * | 2024-01-16 | 2024-03-29 | 南京德克威尔自动化有限公司 | Bus extension module and communication method using same |
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