CN214851307U - 485 and 232 two-in-one Ethernet conversion circuit - Google Patents
485 and 232 two-in-one Ethernet conversion circuit Download PDFInfo
- Publication number
- CN214851307U CN214851307U CN202121326662.XU CN202121326662U CN214851307U CN 214851307 U CN214851307 U CN 214851307U CN 202121326662 U CN202121326662 U CN 202121326662U CN 214851307 U CN214851307 U CN 214851307U
- Authority
- CN
- China
- Prior art keywords
- integrated circuit
- pin
- circuit
- module
- ethernet
- 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
Images
Landscapes
- Small-Scale Networks (AREA)
- Communication Control (AREA)
Abstract
The utility model discloses a 485 and 232 two unifications change ethernet circuit relates to the communication field, and this 485 and 232 two unifications change ethernet circuit, include: the power supply input module is used for converting the input 6-24V voltage into 3.3V voltage for other modules to work and use; the 232 conversion circuit module is used for stably and reliably processing the communication signal level, converting the communication signal level into a TTL level and accessing the TTL level to the MCU module for protocol analysis; the 485 conversion circuit module is used for converting the level of the two-way 485 communication signal into a TTL level and accessing the TTL level to the MCU module for protocol analysis; the MCU module is used for controlling the whole circuit, processing signals of 485 communication and 232 communication, protocol conversion and the like, and analyzing and processing the protocol of a network signal; compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses having integrated 485 communications and 232 communications and having converted the functional circuit of ethernet simultaneously, having retrencied the circuit and having constituteed, reduced the circuit board size, the integrated level is high, and the function is many, the cost is reduced simultaneously.
Description
Technical Field
The utility model relates to a communication field specifically is a 485 and 232 two unifications change ethernet circuit.
Background
The RS-232 standard interface (also called EIA RS-232) is one of the commonly used serial communication interface standards, and the full name is 'technical standard of serial binary data exchange interface between Data Terminal Equipment (DTE) and data communication equipment (DCE'). When the communication distance is required to be dozens of meters to thousands of meters, the RS-485 serial bus standard is widely adopted. RS-485 adopts balanced transmission and differential reception, so that the capability of suppressing common mode interference is realized.
485 communication changes ethernet circuit and 232 communication changes ethernet circuit and continues to be used in the industry more mature, all at present is mainly single function changes ethernet. The current market is a 485 communication to Ethernet function circuit, or a 232 communication device Ethernet function circuit, and two communication function to Ethernet conversion products are not integrated. Only one functional circuit is provided, and the functional circuit which can not support both 485 communication and 232 communication is not met, so that improvement is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a 485 and 232 two unifications change ethernet circuit to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a 485 and 232 two-in-one to ethernet circuit, comprising:
the power supply input module is used for converting the input 6-24V voltage into 3.3V voltage for other modules to work and use;
the 232 conversion circuit module is used for stably and reliably processing the communication signal level, converting the communication signal level into a TTL level and accessing the TTL level to the MCU module for protocol analysis;
the 485 conversion circuit module is used for converting the level of the two-way 485 communication signal into a TTL level and accessing the TTL level to the MCU module for protocol analysis;
the MCU module is used for controlling the whole circuit, processing signals of 485 communication and 232 communication, protocol conversion and the like, analyzing and processing a protocol of a network signal, controlling the indicator lamps LED1 and LED2 to indicate the working state of the circuit, and receiving a signal of a key SW1 to restore factory settings;
the Ethernet control module is used for converting the standard network signal into a bus signal, accessing the bus signal to the MCU module for protocol analysis and data conversion processing;
the Ethernet interface module is used for establishing an isolation protection circuit inside through an RJ45 seat internally provided with a network transformer;
the power input module is connected with the Ethernet interface module, the Ethernet control module, the MCU module, the 485 conversion circuit module, the 232 conversion circuit module is bidirectionally connected with the 232 interface module, the 485 conversion circuit module, the MCU module, the 485 conversion circuit module is bidirectionally connected with the 485 interface module, the MCU module is bidirectionally connected with the Ethernet control module, and the Ethernet control module is bidirectionally connected with the Ethernet interface module.
As a further aspect of the present invention: the MCU module comprises an integrated circuit U1, and the integrated circuit U1 is STM32F030C 8.
As a further aspect of the present invention: the Ethernet control module comprises an integrated circuit U3, and the integrated circuit U3 is DM9000 AEP.
As a further aspect of the present invention: the 232 communication circuit module comprises an integrated circuit U4, and the integrated circuit U4 is MAX3232 CD.
As a further aspect of the present invention: the 485 communication circuit module comprises an integrated circuit U5 and an integrated circuit U6, wherein the models of the integrated circuit U5 and the integrated circuit U6 are SP 3485.
As a further aspect of the present invention: pin number 18 of the integrated circuit U1 is connected to pin number 18 of the integrated circuit U3, pin number 19 of the integrated circuit U1 is connected to pin number 17 of the integrated circuit U3, pin number 20 of the integrated circuit U1 is connected to pin number 16 of the integrated circuit U3, pin number 39 of the integrated circuit U1 is connected to pin number 14 of the integrated circuit U3, pin number 40 of the integrated circuit U1 is connected to pin number 13 of the integrated circuit U3, pin number 41 of the integrated circuit U1 is connected to pin number 12 of the integrated circuit U3, pin number 42 of the integrated circuit U1 is connected to pin number 11 of the integrated circuit U3, pin number 43 of the integrated circuit U1 is connected to pin number 10 of the integrated circuit U3, pin number 45 of the integrated circuit U1 is connected to pin number 31 of the integrated circuit U3, pin number 46 of the integrated circuit U1 is connected to pin number 29 of the integrated circuit U686U 9, pin number 21 of the integrated circuit U3 is connected to pin number 21 of the integrated circuit U3, and pin number 8427 of the integrated circuit U8653 is connected to pin number 3, pin 25 of the integrated circuit U1 is connected with pin 26 of the integrated circuit U3, pin 26 of the integrated circuit U1 is connected with pin 25 of the integrated circuit U3, pin 27 of the integrated circuit U1 is connected with pin 24 of the integrated circuit U3, pin 28 of the integrated circuit U1 is connected with pin 22 of the integrated circuit U3, pin 10 of the integrated circuit U1 is connected with pin 36 of the integrated circuit U3, pin 11 of the integrated circuit U1 is connected with pin 35 of the integrated circuit U3, and pin 16 of the integrated circuit U1 is connected with pin 32 of the integrated circuit U3.
As a further aspect of the present invention: pin number 10 of the integrated circuit U3 is connected with pin number 4 of the integrated circuit U5, pin number 11 of the integrated circuit U3 is connected with pin number 4 of the integrated circuit U6, a 485RX2 port of the circuit where the integrated circuit U3 is located is connected with pin number 1 of the integrated circuit U6, and a 485RX1 port of the circuit where the integrated circuit U3 is located is connected with pin number 1 of the integrated circuit U5.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses having integrated 485 communications and 232 communications and having converted the functional circuit of ethernet simultaneously, having retrencied the circuit and having constituteed, reduced the circuit board size, the integrated level is high, and the function is many, the cost is reduced simultaneously.
Drawings
Fig. 1 is a schematic diagram of a 485 and 232 two-in-one to ethernet circuit.
Fig. 2 is a circuit diagram of a 485 and 232 two-in-one ethernet circuit.
Fig. 3 is a circuit diagram of the MCU module.
Fig. 4 is a circuit diagram of the power input module.
Fig. 5 is a circuit diagram of an ethernet control module.
Fig. 6 is a circuit diagram of a 232 conversion circuit module.
Fig. 7 is a circuit diagram of a 485 conversion circuit module.
Fig. 8 is a circuit diagram of an ethernet interface module.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1-8, a 485 and 232 two-in-one ethernet circuit includes:
the power supply input module is used for converting the input 6-24V voltage into 3.3V voltage for other modules to work and use;
the 232 conversion circuit module is used for stably and reliably processing the communication signal level, converting the communication signal level into a TTL level and accessing the TTL level to the MCU module for protocol analysis;
the 485 conversion circuit module is used for converting the level of the two-way 485 communication signal into a TTL level and accessing the TTL level to the MCU module for protocol analysis;
the MCU module is used for controlling the whole circuit, processing signals of 485 communication and 232 communication, protocol conversion and the like, analyzing and processing a protocol of a network signal, controlling the indicator lamps LED1 and LED2 to indicate the working state of the circuit, and receiving a signal of a key SW1 to restore factory settings;
the Ethernet control module is used for converting the standard network signal into a bus signal, accessing the bus signal to the MCU module for protocol analysis and data conversion processing;
the Ethernet interface module is used for establishing an isolation protection circuit inside through an RJ45 seat internally provided with a network transformer;
the power input module is connected with the Ethernet interface module, the Ethernet control module, the MCU module, the 485 conversion circuit module, the 232 conversion circuit module is bidirectionally connected with the 232 interface module, the 485 conversion circuit module, the MCU module, the 485 conversion circuit module is bidirectionally connected with the 485 interface module, the MCU module is bidirectionally connected with the Ethernet control module, and the Ethernet control module is bidirectionally connected with the Ethernet interface module.
In this embodiment: referring to fig. 3, the MCU module includes an integrated circuit U1, the integrated circuit U1 being model number STM32F030C 8.
For taking charge of the control of the whole circuit.
In this embodiment: referring to fig. 5, the ethernet control module includes an integrated circuit U3, the integrated circuit U3 model DM9000 AEP.
An 10/100Mbit adaptive controller DM9000AEP special for Ethernet can convert the standard network signals into bus signals and access the bus signals to an MCU for protocol analysis.
In this embodiment: referring to fig. 6, the 232 communication circuit module includes an integrated circuit U4, the model of the integrated circuit U4 is MAX3232 CD.
The 232 interface module is for serial binary data transmission.
In this embodiment: referring to fig. 7, the 485 communication circuit module includes an integrated circuit U5, an integrated circuit U6, an integrated circuit U5, and an integrated circuit U6 model SP 3485.
The 485 interface module adopts balanced transmission and differential reception, so that the 485 interface module has the capability of suppressing common-mode interference.
In this embodiment: pin number 18 of the integrated circuit U1 is connected to pin number 18 of the integrated circuit U3, pin number 19 of the integrated circuit U1 is connected to pin number 17 of the integrated circuit U3, pin number 20 of the integrated circuit U1 is connected to pin number 16 of the integrated circuit U3, pin number 39 of the integrated circuit U1 is connected to pin number 14 of the integrated circuit U3, pin number 40 of the integrated circuit U1 is connected to pin number 13 of the integrated circuit U3, pin number 41 of the integrated circuit U1 is connected to pin number 12 of the integrated circuit U3, pin number 42 of the integrated circuit U1 is connected to pin number 11 of the integrated circuit U3, pin number 43 of the integrated circuit U1 is connected to pin number 10 of the integrated circuit U3, pin number 45 of the integrated circuit U1 is connected to pin number 31 of the integrated circuit U3, pin number 46 of the integrated circuit U1 is connected to pin number 29 of the integrated circuit U686U 9, pin number 21 of the integrated circuit U3 is connected to pin number 21 of the integrated circuit U3, and pin number 8427 of the integrated circuit U8653 is connected to pin number 3, pin 25 of the integrated circuit U1 is connected with pin 26 of the integrated circuit U3, pin 26 of the integrated circuit U1 is connected with pin 25 of the integrated circuit U3, pin 27 of the integrated circuit U1 is connected with pin 24 of the integrated circuit U3, pin 28 of the integrated circuit U1 is connected with pin 22 of the integrated circuit U3, pin 10 of the integrated circuit U1 is connected with pin 36 of the integrated circuit U3, pin 11 of the integrated circuit U1 is connected with pin 35 of the integrated circuit U3, and pin 16 of the integrated circuit U1 is connected with pin 32 of the integrated circuit U3.
In this embodiment: pin number 10 of the integrated circuit U3 is connected with pin number 4 of the integrated circuit U5, pin number 11 of the integrated circuit U3 is connected with pin number 4 of the integrated circuit U6, a 485RX2 port of the circuit where the integrated circuit U3 is located is connected with pin number 1 of the integrated circuit U6, and a 485RX1 port of the circuit where the integrated circuit U3 is located is connected with pin number 1 of the integrated circuit U5.
The utility model discloses a theory of operation is: the power input module supplies 3.3V voltage to each module, 232 communication signals are input by the 232 interface module, the signals are converted into TTL level signals through the 232 conversion circuit module and output to the MCU module, the protocol of the MCU module is analyzed, the MCU module outputs signals and realizes conversion of standard network signals and bus signals through the Ethernet control module, finally, Ethernet signal transmission is completed through the Ethernet interface module, 485 communication signals accessed by the 485 interface module pass through the 485 conversion circuit module, the MCU module, the Ethernet control module and the Ethernet interface module, and Ethernet signals are output.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides a 485 and 232 two unification change ethernet circuit which characterized in that:
this 485 and 232 two unification change ethernet circuit includes:
the power supply input module is used for converting the input 6-24V voltage into 3.3V voltage for other modules to work and use;
the 232 conversion circuit module is used for stably and reliably processing the communication signal level, converting the communication signal level into a TTL level and accessing the TTL level to the MCU module for protocol analysis;
the 485 conversion circuit module is used for converting the level of the two-way 485 communication signal into a TTL level and accessing the TTL level to the MCU module for protocol analysis;
the MCU module is used for controlling the whole circuit, processing signals of 485 communication and 232 communication, protocol conversion and the like, analyzing and processing a protocol of a network signal, controlling the indicator lamps LED1 and LED2 to indicate the working state of the circuit, and receiving a signal of a key SW1 to restore factory settings;
the Ethernet control module is used for converting the standard network signal into a bus signal, accessing the bus signal to the MCU module for protocol analysis and data conversion processing;
the Ethernet interface module is used for establishing an isolation protection circuit inside through an RJ45 seat internally provided with a network transformer;
the power input module is connected with the Ethernet interface module, the Ethernet control module, the MCU module, the 485 conversion circuit module, the 232 conversion circuit module is bidirectionally connected with the 232 interface module, the 485 conversion circuit module, the MCU module, the 485 conversion circuit module is bidirectionally connected with the 485 interface module, the MCU module is bidirectionally connected with the Ethernet control module, and the Ethernet control module is bidirectionally connected with the Ethernet interface module.
2. The 485 and 232 two-in-one ethernet circuit according to claim 1, wherein the MCU module comprises an integrated circuit U1, model number U1 being STM32F030C 8.
3. The 485 and 232 two-in-one ethernet circuit according to claim 1, wherein the ethernet control module comprises an integrated circuit U3, model DM9000AEP of integrated circuit U3.
4. The 485 and 232 two-in-one ethernet circuit according to claim 1, wherein the 232 communication circuit module comprises an integrated circuit U4, the integrated circuit U4 being of the type MAX3232 CD.
5. The 485 and 232 two-in-one ethernet circuit according to claim 1, wherein the 485 communication circuit module comprises an integrated circuit U5 and an integrated circuit U6, the integrated circuit U5 and the integrated circuit U6 are SP 3485.
6. The 485 and 232 two-in-one Ethernet circuit as claimed in claim 1, wherein pin 18 of the integrated circuit U1 is connected to pin 18 of the integrated circuit U3, pin 19 of the integrated circuit U1 is connected to pin 17 of the integrated circuit U3, pin 20 of the integrated circuit U1 is connected to pin 16 of the integrated circuit U3, pin 39 of the integrated circuit U1 is connected to pin 14 of the integrated circuit U3, pin 40 of the integrated circuit U1 is connected to pin 13 of the integrated circuit U3, pin 41 of the integrated circuit U1 is connected to pin 12 of the integrated circuit U3, pin 42 of the integrated circuit U1 is connected to pin 11 of the integrated circuit U3, pin 43 of the integrated circuit U1 is connected to pin 10 of the integrated circuit U3, pin 45 of the integrated circuit U1 is connected to pin 31 of the integrated circuit U3, and pin 46 of the integrated circuit U1 is connected to pin 3 of the integrated circuit U3, pin 21 of the integrated circuit U1 is connected with pin 28 of the integrated circuit U3, pin 22 of the integrated circuit U1 is connected with pin 27 of the integrated circuit U3, pin 25 of the integrated circuit U1 is connected with pin 26 of the integrated circuit U3, pin 26 of the integrated circuit U1 is connected with pin 25 of the integrated circuit U3, pin 27 of the integrated circuit U1 is connected with pin 24 of the integrated circuit U3, pin 28 of the integrated circuit U1 is connected with pin 22 of the integrated circuit U3, pin 10 of the integrated circuit U1 is connected with pin 36 of the integrated circuit U3, pin 11 of the integrated circuit U1 is connected with pin 35 of the integrated circuit U3, and pin 16 of the integrated circuit U1 is connected with pin 32 of the integrated circuit U3.
7. The 485 and 232 two-in-one Ethernet circuit as claimed in claim 5, wherein pin 10 of the integrated circuit U3 is connected to pin 4 of the integrated circuit U5, pin 11 of the integrated circuit U3 is connected to pin 4 of the integrated circuit U6, the 485RX2 port of the circuit with the integrated circuit U3 is connected to pin 1 of the integrated circuit U6, and the 485RX1 port of the circuit with the integrated circuit U3 is connected to pin 1 of the integrated circuit U5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121326662.XU CN214851307U (en) | 2021-06-15 | 2021-06-15 | 485 and 232 two-in-one Ethernet conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121326662.XU CN214851307U (en) | 2021-06-15 | 2021-06-15 | 485 and 232 two-in-one Ethernet conversion circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214851307U true CN214851307U (en) | 2021-11-23 |
Family
ID=78806889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121326662.XU Active CN214851307U (en) | 2021-06-15 | 2021-06-15 | 485 and 232 two-in-one Ethernet conversion circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214851307U (en) |
-
2021
- 2021-06-15 CN CN202121326662.XU patent/CN214851307U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206236264U (en) | A kind of medium-voltage carrier system | |
| CN105515927A (en) | Remote serial port communication system and method based on Ethernet Cat.5 wiring framework | |
| CN214851307U (en) | 485 and 232 two-in-one Ethernet conversion circuit | |
| CN201629041U (en) | Remote meter reading communication system | |
| CN103685262A (en) | Heterogeneous network communication adapter | |
| CN101662369A (en) | Universal network adapter | |
| CN202331173U (en) | Industrial controller and industrial network control system | |
| CN113438012B (en) | Multi-channel satellite communication device based on VPX framework | |
| CN205071033U (en) | Ethernet signal transmission circuit and ethernet switch | |
| CN205051721U (en) | Ethernet exchange device | |
| CN202043143U (en) | EtherCAT high-dense digital IO (input/output) interface module | |
| CN110442096A (en) | A kind of data acquisition control work station and its data transmission method | |
| CN111653885A (en) | Novel Type-C interface device and application method thereof | |
| CN111600391A (en) | RS-485-based direct-current power line communication device | |
| CN202094918U (en) | General servo pulse value interface module of ether CAT bus | |
| CN102081383A (en) | Device and method for secure network protocol for field control | |
| CN208623394U (en) | A kind of network interface concatenation listens to circuit card and telemechanical apparatus intelligent regulator analyzer | |
| CN101368876B (en) | Testing bench frame control system for open type internal combustion engine | |
| CN215912115U (en) | Communication test circuit and communication test tool | |
| CN202696645U (en) | Modularized and channelized Ethernet gateway | |
| CN208873274U (en) | A kind of wireless industrial transmission communication equipment | |
| CN218549930U (en) | CAN communication changes optical fiber communication equipment | |
| CN219087144U (en) | Data transmission device of self-adaptive RS232 and RS485 interface | |
| CN212162930U (en) | RS-485-based direct-current power line communication device | |
| CN221081343U (en) | Communication board based on DeviceNet protocol |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |