CN111245693A - Time-sharing data transmission system and transmission method - Google Patents
Time-sharing data transmission system and transmission method Download PDFInfo
- Publication number
- CN111245693A CN111245693A CN201811437058.7A CN201811437058A CN111245693A CN 111245693 A CN111245693 A CN 111245693A CN 201811437058 A CN201811437058 A CN 201811437058A CN 111245693 A CN111245693 A CN 111245693A
- Authority
- CN
- China
- Prior art keywords
- group
- communication equipment
- terminal
- communication
- transmission lines
- 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.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40169—Flexible bus arrangements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention provides a time-sharing data transmission system and a transmission method, wherein the time-sharing data transmission system comprises: a communication interface having a first terminal and a second terminal; the transmission lines in each group at least comprise first connection lines and second connection lines, all the first connection lines are connected in parallel, and all the second connection lines are connected in parallel; and a plurality of sets of communication devices, each set of communication devices being connected to the first terminal and the second terminal via a corresponding set of transmission lines, wherein only one set of transmission lines is respectively communicated with the first terminal and the second terminal via the first connection line and the second connection line at the same time, and the set of communication devices corresponding to the set of transmission lines is connected to the first terminal and the second terminal. The invention realizes an effective method that a single bus can be connected with a plurality of devices in a time-sharing transmission mode, and has the advantages of easy development and simple maintenance.
Description
Technical Field
The invention relates to the field of digital communication, in particular to a time-sharing data transmission system and a time-sharing data transmission method.
Background
The technology of the single chip microcomputer is mature in the early 80 s, a large number of various digital instruments are developed along with the technology, the requirement of digital information requirements of enterprises is met, and at present, when each user purchases various instruments, the requirement of communication capacity is one of the primary conditions. The instrument is converted into digital output from the previous simple analog display, the digital output inevitably needs a communication interface, the early digital communication interface adopts RS232, and only point-to-point RS232 cannot meet the requirement along with the massive networking of the digital instrument, so the problem is solved by the produced RS 485.
The technical basis of industry 4.0 is that network entities are connected, namely: the technology of object association can be realized without technical support of various network entities. Such as wireless networks, e.g., WIFI, ZiBee, BlueTooth, radio, etc., and wired networks, e.g., EtherNet, CANopen, DeviceNet, Profibus, CanBUS, RS232, RS485, etc. The RS485 bus has the characteristics of low erection cost, good stability, easy development, long communication distance and the like, so the RS485 bus is most commonly used.
The driving capability of the driving chips of different models is inconsistent, and the general occasion that PLC used can not exceed 32 RS485 equipment, and the equipment manufacturer is in consideration of market demand and cost, and the quantity of the driving equipment that general PLC equipment chose for use is 32.
In some applications more than 32 pieces of equipment may be used. Such as: energy management data collection, production line equipment monitoring networking and the like. The IC model used after the PLC product design is completed is determined, so the number of devices capable of being connected is determined, but in practice, in some application scenes, one PLC needs to be used for communicating with more than 32 RS485 instrument devices, and the following two solutions mainly exist:
(1) more PLC hosts are added to realize data networking;
(2) an RS485 repeater is added, so that the load capacity of the same bus is increased;
however, both of the above two ways are realized by adding hardware, which increases the project cost.
In view of the above, the present invention provides a time-sharing data transmission system and a transmission method.
Disclosure of Invention
The invention aims to provide a time-sharing data transmission system and a transmission method, overcomes the difficulty in the prior art, realizes an effective method that a single bus can be connected with a plurality of devices in a time-sharing transmission mode under the condition of not adding devices, and has the advantages of easy development and simple maintenance.
The invention provides a time-sharing data transmission system, wherein the self-adaptive control device comprises:
a communication interface having a first terminal and a second terminal;
the transmission lines in each group at least comprise first connection lines and second connection lines, all the first connection lines are connected in parallel, and all the second connection lines are connected in parallel; and a plurality of sets of communication devices, each set of communication devices being connected to the first terminal and the second terminal via a corresponding set of transmission lines,
wherein only one set of the transmission lines is respectively communicated with the first terminal and the second terminal through the first connecting line and the second connecting line at the same time, and one set of communication equipment corresponding to the set of the transmission lines is connected to the first terminal and the second terminal.
Preferably, in the multiple sets of communication devices, each set of communication device includes at least two communication devices, and each communication device sequentially uses the transmission lines corresponding to the set of communication devices to perform data transmission in a time-sharing manner.
Preferably, the communication device is an RS-485 type device.
Preferably, the number of the plurality of groups of communication devices is 8.
Preferably, the time-sharing data transmission system further includes a plurality of sets of switches, which correspond to the plurality of sets of transmission lines and the plurality of sets of communication devices one to one.
Preferably, at the same time, only one set of switches is in an on state and the remaining sets of switches are in an off state.
Preferably, the communication interface is a wiring interface of an R-type programmable logic controller having the plurality of sets of switches, and the switches are relay switches.
Preferably, the plurality of sets of switches are respectively disposed inside the plurality of sets of communication devices.
The invention also provides a time-sharing data transmission method, which comprises the following steps:
providing a plurality of groups of communication equipment and a plurality of groups of transmission lines, wherein each group of communication equipment comprises at least two communication equipment, each group of transmission lines at least comprises a first connection line and a second connection line, all the first connection lines are connected in parallel, and all the second connection lines are connected in parallel;
connecting each group of transmission lines with a corresponding group of communication equipment respectively;
communicating and communicating a group of communication equipment connected with the first group of transmission lines with the first terminal and the second terminal by using a selector switch;
after all the communication equipment in a group of communication equipment connected with the first group of transmission lines is communicated, disconnecting the change-over switch, and connecting a group of communication equipment connected with the second group of transmission lines with the first terminal and the second terminal by using another change-over switch for communication; and
and switching the change-over switch corresponding to the next group of transmission lines to a closed state, so that a group of communication equipment connected with the next group of transmission lines is communicated with the first terminal and the second terminal and communicates until all the communication equipment groups finish communication, wherein only one group of transmission lines respectively communicate the first connecting line and the second connecting line with the first terminal and the second terminal through the change-over switch corresponding to the transmission lines at the same time.
Preferably, in the multiple sets of communication devices, each set of communication device includes at least two communication devices, and each communication device sequentially uses the transmission lines corresponding to the set of communication devices to perform data transmission in a time-sharing manner.
Preferably, after all the communication devices in a group of communication devices connected to the first group of transmission lines are finished communicating, a control signal is generated, and the control signal is used to turn off the switch corresponding to the first group of transmission lines and turn on the switch corresponding to the second group of transmission lines, so that the second group of communication devices communicate with the first terminal and the second terminal and perform communication.
Preferably, after all the communication equipment groups finish communication, an end signal is generated, and the end signal is used for controlling all the change-over switches to be switched off, so that the communication process is ended.
In view of this, the time-sharing data transmission system and the transmission method of the present invention realize an effective method that a single RS485 bus can be connected to more than 32 devices in a time-sharing transmission manner without adding devices, and are easy to develop and simple to maintain.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.
FIG. 1 is a schematic circuit diagram of a time-sharing data transmission system according to the present invention;
FIG. 2 is a diagram illustrating a first communication state of the time-sharing data transmission system according to the present invention;
FIG. 3 is a diagram illustrating a second communication state of the time-sharing data transmission system according to the present invention;
fig. 4 is a flow chart of the method of the time-sharing data transmission system of the present invention.
Reference numerals
1 first group of communication devices
2 second group communication equipment
3 third group communication equipment
Nth group communication equipment
SW-1 first group of change-over switches
SW-2 second group change-over switch
SW-3 third group change-over switch
SW-N fourth group change-over switch
50 first connecting line
60 second connecting line
D + first terminal
D-second terminal
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
Fig. 1 is a circuit connection diagram of the time-sharing data transmission system of the present invention. As shown in fig. 1, the present invention provides a time-sharing data transmission system, wherein the adaptive control device comprises: communication interface, multiunit transmission line, multiunit communication equipment. The communication interface has a first terminal D + and a second terminal D-. Each set of said transmission lines comprises at least a first connection line 50 and a second connection line 60, all said first connection lines 50 being connected in parallel to each other and all said second connection lines 60 being connected in parallel to each other. Each set of communication devices is connected to a first terminal D + and a second terminal D-via a corresponding set of transmission lines. Wherein only one set of the transmission lines is connected to the first terminal D + and the second terminal D-via the first connection line 50 and the second connection line 60, respectively, and a set of communication devices corresponding to the set of the transmission lines is connected to the first terminal D + and the second terminal D-.
The communication device in this embodiment is an RS-485 type device, but not limited thereto. In the invention, each group of communication equipment comprises at least two communication equipment, and each communication equipment sequentially uses the transmission lines corresponding to the group of communication equipment to perform data transmission in a time-sharing manner, thereby realizing the effect that one communication interface can transmit a plurality of groups of communication equipment. In this embodiment, the number of the plurality of sets of communication devices is 8, but not limited thereto. The communication interface is a wiring interface of an R-type programmable logic controller with the plurality of groups of change-over switches, and the change-over switches are relay switches. The multiple groups of change-over switches are respectively arranged in the multiple groups of communication equipment.
The time-sharing data transmission system also comprises a plurality of groups of change-over switches which are in one-to-one correspondence with the plurality of groups of transmission lines and the plurality of groups of communication equipment. At the same time, only one of the groups of the switches is turned on, and the remaining groups of the switches are turned off.
As can be seen from fig. 1, the two terminals of the first group communication device 1 are respectively connected to a first group transmission line formed by the first connection line 50 and the second connection line 60, and a first group switch SW-1 is provided on the group transmission line. The first set of change-over switches SW-1 controls the conduction state between the two terminals of the first set of communication devices 1 and the first terminal D + and said second terminal D-of the communication interface.
Similarly, the two terminals of the second group communication device 2 are connected to a second group transmission line formed by the first connection line 50 and the second connection line 60, and a second group switch SW-2 is provided on the second group transmission line. The second set of switches SW-2 controls the conduction state between the two terminals of the second set of communication devices 2 and the first terminal D + and said second terminal D-of the communication interface.
The two terminals of the third group communication device 1 are each connected to a third group transmission line formed by the first connection line 50 and the second connection line 60, and a third group changeover switch SW-3 is provided on the group transmission line. The third set of change-over switches SW-3 controls the conduction state between the two terminals of the first set of communication devices 1 and the first terminal D + and said second terminal D-of the communication interface.
As described above, the two terminals of the nth group communication device N are each connected to the nth group transmission line formed by the first connection line 50 and the second connection line 60, and the nth group changeover switch SW-N is provided on the group transmission line. The nth group of switches SW-N controls the conduction state between the two terminals of the nth group of communication devices N and the first terminal D + and the second terminal D-of the communication interface.
Fig. 2 is a schematic diagram of a first communication state of the time-sharing data transmission system according to the present invention. As shown in fig. 2, the switches are controlled such that when the first set of switches SW-1 is turned on and the other sets of switches are turned off, the two terminals of the first set of communication equipment 1 can directly communicate with the first terminal D + and the second terminal D-of the communication interface.
Fig. 3 is a diagram illustrating a second communication state of the time-sharing data transmission system according to the present invention. As shown in fig. 3, the switches are controlled such that when the second set of switches SW-2 is turned on and the other sets of switches are turned off, the two terminals of the second set of communication devices 2 can directly communicate with the first terminal D + and the second terminal D-of the communication interface.
By analogy, one group of the change-over switches is turned on one by one according to a preset sequence, and the other groups of the change-over switches are kept turned off, so that one communication interface can transmit data of multiple groups of communication equipment, and only one group of the communication equipment can transmit data to the communication interface at the same time.
Fig. 4 is a flow chart of the method of the time-sharing data transmission system of the present invention. As shown in fig. 4, the present invention further provides a time-sharing data transmission method, which includes the following steps:
s10, providing a plurality of groups of communication equipment and a plurality of groups of transmission lines, wherein each group of communication equipment comprises at least two communication equipment, each group of transmission lines at least comprises a first connection line and a second connection line, all the first connection lines are connected in parallel with each other, and all the second connection lines are connected in parallel with each other.
And S20, connecting each group of transmission lines with a corresponding group of communication equipment.
And S30, communicating and communicating a group of communication equipment connected with the first group of transmission lines with the first terminal D + and the second terminal D-by using a change-over switch.
And S40, after all the communication devices in the group of communication devices connected with the first group of transmission lines are communicated, disconnecting the change-over switch, and connecting the group of communication devices connected with the second group of transmission lines with the first terminal D + and the second terminal D-by using another change-over switch for communication. And
and S50, switching the switch corresponding to the next set of transmission line to a closed state, so that a set of communication equipment connected to the next set of transmission line is communicated with the first terminal D + and the second terminal D-and communicates until all the sets of communication equipment finish communication, wherein only one set of transmission line respectively communicates the first connection line and the second connection line with the first terminal D + and the second terminal D-through the switch corresponding to the transmission line at the same time.
In a preferred embodiment, in the multiple sets of communication devices, each set of communication device includes at least two communication devices, and each communication device sequentially uses the transmission lines corresponding to the set of communication devices to perform data transmission in a time-sharing manner.
In a preferred embodiment, after all communication devices in a group of communication devices connected to the first group of transmission lines have completed communication, a control signal is generated, where the control signal is used to turn off the switch corresponding to the first group of transmission lines and turn on the switch corresponding to the second group of transmission lines, so that the second group of communication devices is connected to and communicates with the first terminal D + and the second terminal D-.
In a preferred scheme, after all the communication equipment groups finish communication, an end signal is generated, the end signal is used for controlling all the change-over switches to be switched off, and the communication process is ended.
In a preferred embodiment, the present invention can be used to transmit data of multiple sets of device communications, where each set of communication devices includes 32 device communications, and the specific process is as follows:
step1, the first group of 1 st equipment communicates with the first group of parameters, the second equipment communicates with the first group of 32 equipment after the first group of parameters communicates with the first equipment and 20 groups of parameters communicate with the first equipment;
step2, switching to a second group of communication, namely, the communication of the second group of the 1 st equipment and the communication of the 20 group parameters of the second group of the 1 st equipment, namely, the communication of the 2 nd equipment is carried out, and the communication of the second group of the 32 equipment is finished;
step3, switching to a third group communication, namely the third group communication of the 1 st equipment, and the 20 group parameter communication of the 1 st equipment, namely the 2 nd equipment communication, and finishing the communication of the 32 th equipment;
…
and StepN, finishing the communication of all the equipment in the Nth group of communication equipment and finishing the communication process.
In a preferred scheme, the PLC output terminal is used, 4 terminals are needed for expanding one group of communication equipment, if two groups of communication equipment need to be expanded, 6 terminals are needed, and the like, according to an RS-485Modubs communication protocol, the number of usable communication slave stations is 255 at most, so that the expansion limit is 8 groups; the type of PLC terminal output is relay R type.
In the use process, different instrument communication parameters are different according to the complexity of a field system, and the communication flag of data needs to be made with a single equipment slave station, so that the purpose of communication of different parameters of different equipment is achieved. In engineering practice, if a single device fails and cannot communicate, a program is required to process communication abnormity and actively give an alarm to an upper computer system, at the moment, a meter needing Bypass failure communicates with other meters, and the communication meter which normally works can be ensured to upload correct information to the upper computer system. In actual engineering, data errors uploaded to a system due to abnormal processing of data inside an instrument or a PLC can be caused, so that abnormal data needs to be screened in a PLC program, and the correctness of the data entering an upper computer system is guaranteed.
In conclusion, the time-sharing data transmission system and the transmission method of the invention realize an effective method that a single RS485 bus can be connected with more than 32 devices in a time-sharing transmission mode without adding devices, and have the advantages of easy development and simple maintenance.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (12)
1. A time-sharing data transmission system, comprising:
a communication interface having a first terminal and a second terminal;
the transmission lines in each group at least comprise first connection lines and second connection lines, all the first connection lines are connected in parallel, and all the second connection lines are connected in parallel; and
a plurality of sets of communication devices, each set of communication devices being connected to the first terminal and the second terminal via a corresponding set of transmission lines,
wherein only one set of the transmission lines is respectively communicated with the first terminal and the second terminal through the first connecting line and the second connecting line at the same time, and one set of communication equipment corresponding to the set of the transmission lines is connected to the first terminal and the second terminal.
2. The time division data transmission system of claim 1, wherein: in the multiple groups of communication equipment, each group of communication equipment comprises at least two communication equipment, and each communication equipment sequentially uses the transmission lines corresponding to the group of communication equipment to perform data transmission in a time-sharing manner.
3. The time division data transmission system of claim 2, wherein: the communication equipment is RS-485 type equipment.
4. The time division data transmission system of claim 2, wherein: the number of the multiple groups of communication equipment is 8.
5. The time division data transmission system of claim 1, wherein: the time-sharing data transmission system also comprises a plurality of groups of change-over switches which are in one-to-one correspondence with the plurality of groups of transmission lines and the plurality of groups of communication equipment.
6. The time division data transmission system of claim 5, wherein: at the same time, only one group of the change-over switches is in a conducting state, and the rest groups of the change-over switches are in a non-conducting state.
7. The time division data transmission system of claim 6, wherein: the communication interface is a wiring interface of an R-type programmable logic controller with the plurality of groups of change-over switches, and the change-over switches are relay switches.
8. The time division data transmission system of claim 6, wherein: the multiple groups of change-over switches are respectively arranged in the multiple groups of communication equipment.
9. A time-sharing data transmission method is characterized by comprising the following steps:
providing a plurality of groups of communication equipment and a plurality of groups of transmission lines, wherein each group of communication equipment comprises at least two communication equipment, each group of transmission lines at least comprises a first connection line and a second connection line, all the first connection lines are connected in parallel, and all the second connection lines are connected in parallel;
connecting each group of transmission lines with a corresponding group of communication equipment respectively;
communicating and communicating a group of communication equipment connected with the first group of transmission lines with the first terminal and the second terminal by using a selector switch;
after all the communication equipment in a group of communication equipment connected with the first group of transmission lines is communicated, disconnecting the change-over switch, and connecting a group of communication equipment connected with the second group of transmission lines with the first terminal and the second terminal by using another change-over switch for communication; and
and switching the change-over switch corresponding to the next group of transmission lines to a closed state, so that a group of communication equipment connected with the next group of transmission lines is communicated with the first terminal and the second terminal and communicates until all the communication equipment groups finish communication, wherein only one group of transmission lines respectively communicate the first connecting line and the second connecting line with the first terminal and the second terminal through the change-over switch corresponding to the transmission lines at the same time.
10. The time-shared data transmission method of claim 9, wherein: in the multiple groups of communication equipment, each group of communication equipment comprises at least two communication equipment, and each communication equipment sequentially uses the transmission lines corresponding to the group of communication equipment to perform data transmission in a time-sharing manner.
11. The time-shared data transmission method of claim 10, wherein: after all communication equipment in a group of communication equipment connected with the first group of transmission lines are communicated, a control signal is generated, and the control signal is used for turning off a change-over switch corresponding to the first group of transmission lines and turning on a change-over switch corresponding to the second group of transmission lines, so that the second group of communication equipment is communicated with the first terminal and the second terminal and is communicated.
12. The time-shared data transmission method of claim 9, wherein: and generating an end signal after all the communication equipment groups finish communication, wherein the end signal is used for controlling all the change-over switches to be switched off, and the communication process is ended.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811437058.7A CN111245693A (en) | 2018-11-28 | 2018-11-28 | Time-sharing data transmission system and transmission method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811437058.7A CN111245693A (en) | 2018-11-28 | 2018-11-28 | Time-sharing data transmission system and transmission method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111245693A true CN111245693A (en) | 2020-06-05 |
Family
ID=70877753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811437058.7A Pending CN111245693A (en) | 2018-11-28 | 2018-11-28 | Time-sharing data transmission system and transmission method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111245693A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101459675A (en) * | 2008-12-29 | 2009-06-17 | 南京南瑞继保电气有限公司 | Real-time multi-path multiplexing synchronous high-speed transmission serial bus protocol |
| CN101690009A (en) * | 2007-03-23 | 2010-03-31 | 松下电工株式会社 | Communication system and communication method |
| CN101995876A (en) * | 2010-12-18 | 2011-03-30 | 重庆市智能水表有限责任公司 | M-BUS controller |
| CN105045742A (en) * | 2015-06-30 | 2015-11-11 | 深圳市茁迩科技发展有限公司 | Cascade communication method and cascade system |
-
2018
- 2018-11-28 CN CN201811437058.7A patent/CN111245693A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101690009A (en) * | 2007-03-23 | 2010-03-31 | 松下电工株式会社 | Communication system and communication method |
| CN101459675A (en) * | 2008-12-29 | 2009-06-17 | 南京南瑞继保电气有限公司 | Real-time multi-path multiplexing synchronous high-speed transmission serial bus protocol |
| CN101995876A (en) * | 2010-12-18 | 2011-03-30 | 重庆市智能水表有限责任公司 | M-BUS controller |
| CN105045742A (en) * | 2015-06-30 | 2015-11-11 | 深圳市茁迩科技发展有限公司 | Cascade communication method and cascade system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103235547B (en) | Analog input output module | |
| CN110663222B (en) | Processing process data | |
| US20130096695A1 (en) | Method for configuring a control device | |
| JP6414941B2 (en) | Servo actuator control system | |
| US20160357194A1 (en) | Method of controlling inverters | |
| CN101630156B (en) | Programmable music fountain control system | |
| KR20180123627A (en) | Automation system and method for operation | |
| EP2827205A2 (en) | Remote terminal device and method of operating the same | |
| CN111245693A (en) | Time-sharing data transmission system and transmission method | |
| CN110663226B (en) | Data bus user device | |
| CN110398943A (en) | A kind of multi-layer three-dimensional experiment platform of control system and its building method | |
| CN210015336U (en) | Redundant control system | |
| LU101865B1 (en) | Technology for processing and exchanging signals between field device and controller | |
| CN105094001A (en) | Controller, and method and device for replacing I/O port of controller | |
| CN110679118B (en) | Processing process data | |
| CN110710165B (en) | Method for determining data bus user equipment of local bus and local bus master control device | |
| KR101917616B1 (en) | Iot system using lora network | |
| CN202794946U (en) | Switching device of PLC (programmable logic controller) and PLC applying same | |
| CN105159219A (en) | Centralized control system for industrial microwave power source | |
| CN112711217A (en) | Master-slave configurable PLC controller based on CAN bus | |
| CN105202686A (en) | Information transmission method of remote control, air conditioner system and remote control | |
| JP6482606B2 (en) | Servo actuator ID setting method | |
| KR102129466B1 (en) | Programmable Logic ControllerAPPARATUS | |
| CN110663029B (en) | Distributed process data | |
| Gulpanich et al. | Distributed control of network devices with remote terminal units |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210111 Address after: 215200 no.1688, Jiangxing East Road, Wujiang Economic and Technological Development Zone, Wujiang City, Suzhou City, Jiangsu Province Applicant after: Delta Electronics (Jiangsu) Ltd. Address before: 215200 no.1688, Jiangxing East Road, Wujiang Economic Development Zone, Suzhou City, Jiangsu Province Applicant before: DELTA ELECTRONICS COMPONENTS (WUJIANG) Ltd. |
|
| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200605 |
|
| RJ01 | Rejection of invention patent application after publication |