CN206322170U - RS232 and RS422 expansion board based on CPCI bus - Google Patents
RS232 and RS422 expansion board based on CPCI bus Download PDFInfo
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- CN206322170U CN206322170U CN201621317928.3U CN201621317928U CN206322170U CN 206322170 U CN206322170 U CN 206322170U CN 201621317928 U CN201621317928 U CN 201621317928U CN 206322170 U CN206322170 U CN 206322170U
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Abstract
A kind of RS232 and RS422 expansion board based on cpci bus, with PCI circuits；The input of the output termination FPGA circuitry of the circuit；RS232 drive circuits, the output end of the input termination FPGA circuitry of the circuit；RS422 drive circuits, the output end of the input termination FPGA circuitry of the circuit；The present apparatus is reasonable in design, simple in construction, peripheral component is few, low cost, data processing speed fast, equipment Internet of Things ability is strong, with high speed data transfer ability, can promote the use of telecommunication circuit peripheral hardware and be connected apparatus field with master control equipment.
Description
Technical field
The utility model belongs to technical field of integrated circuits, and in particular to a kind of RS232 based on cpci bus and
RS422 expansion board.
Background technology
With microelectronics, the development of the communication technology, main flow Measurement and Control System has been formed with computer measurement and control system and embedding
Enter based on formula TT＆C system.In the Measurement and Control System of main flow, we will often use cpci bus.Cpci bus has some excellent
Point：Bus space is isolated with processor space；Scalability is preferable；With dynamic configuration mechanism plug and play；Bus bandwidth compared with
It is wide；With shared bus mechanism；With interrupt mechanism.Cpci bus is widely used, and cpci bus has formed a kind of standard,
People widely use cpci bus and extend some functional cards.
RS232 communicates relatively early with RS422 communication appearance, is widely used in measurement by people, controls, data transfer
In.At present, communicated based on RS232 and the peripheral hardware of RS422 communications is more, however, these RS232 are communicated into what is communicated with RS422
When peripheral hardware is connected to main control device, usually occur that the serial ports passage of main control device is not enough, it is impossible to be connected to asking for main control device
Topic.
These peripheral hardwares will be connected to the conventional way of main control device：First, main controller module is added, expands serial ports and leads to
Road；Secondly, interconnected between two main controllers by connecting line.This way has some shortcomings：Circuit is more complicated, increase
Module and line；Cost increase；Safeguard laborious time-consuming, circuit connection is more, is unfavorable for searching problem；System power dissipation increase.
The content of the invention
Technical problem to be solved in the utility model is to overcome the shortcomings of above-mentioned communications peripheral, provides a kind of design and closes
Reason, few simple in construction, peripheral component, low cost, data processing speed are soon, equipment Internet of Things ability is strong, passed with high-speed data
RS232 the and RS422 expansion board based on cpci bus of Movement Capabilities.
Solving the technical scheme of above-mentioned technical problem use is：Have：The FPGA circuitry being controlled to device；PCI electricity
Road；The input of the output termination FPGA circuitry of the circuit；RS232 drive circuits, the input termination FPGA circuitry of the circuit
Output end；RS422 drive circuits, the output end of the input termination FPGA circuitry of the circuit.
FPGA circuitry of the present utility model is：The pin of integrated circuit U2 134 pin, 139 pin~144,11 pin, 12 pin, 25 pin
The pin of~28 pin, 31 pin~36,113 pin, 114 pin, 110 pin, 107 pin, 108 pin connect PCI circuits, integrated circuit U2 89 pin, 88
Pin, 90 pin, the 95 pin connecting connector J5 pin of 4 pin~1, integrated circuit U2 106 pin, 105 pin, 77 pin, 76 pin connect RS232 drivings
Circuit, integrated circuit U2 56 pin, 71 pin, 60 pin, 61 pin connect RS422 drive circuits, and integrated circuit U2 16 pin meet crystal oscillator Y1
4 pin, integrated circuit U2 66 pin, 44 pin, 102 pin, 81 pin, 137 pin, 115 pin, 29 pin, 8 pin connect 3V power supplys, integrated circuit
U2 94 pin, 15 pin, 117 pin, 64 pin, 55 pin, 46 pin, 126 pin, 135 pin connect 1.5V power supplys, integrated circuit U2 23 pin, 22
Pin, 138 pin, 136 pin, 127 pin, 118 pin, 116 pin, 101 pin, 80 pin, 65 pin, 63 pin, 54 pin, 45 pin, 43 pin, 30 pin, 9
Pin, 18 pin, 19 pin, 91 pin ground connection, connector J5 5 pin ground connection, crystal oscillator Y1 1 pin connect 3V power supplys, 3 pin ground connection；Integrated circuit
U2 model EP1C6T144C8, crystal oscillator Y1 model JHY50M.
RS232 drive circuits of the present utility model are：Integrated circuit U1 15 pin and 17 pin connect integrated circuit U2 106 pin
With 105 pin, 6 pin and 4 pin connecting connector J1 1 pin and 2 pin, 10 pin connect the negative pole of 12V power supplys, 1 pin connect 12V power supplys positive pole,
20 pin connect 5V power supplys, 11 pin ground connection, and integrated circuit U3 15 pin and 17 pin connect integrated circuit U2 77 pin and 76 pin, 6 pin and 4 pin
Connecting connector J2 1 pin and 2 pin, 10 pin, which connect the negative pole of 12V power supplys, 1 pin and connect the positive pole of 12V power supplys, 20 pin, connects 5V power supplys, 11 pin
Ground connection；Integrated circuit U1, integrated circuit U3 model GD75232.
RS422 drive circuits of the present utility model are：Integrated circuit U4 3 pin and 2 pin connect integrated circuit U2 56 pin and
71 pin, 1 pin and 2 pin of 5 pin and 6 pin connecting connector J3,3 pin of 8 pin connecting resistance R1 one end and connector J3,7 pin connecting resistances
The R1 other end and connector J3 4 pin, 1 pin connect 5V power supplys, 4 pin ground connection, and integrated circuit U5 3 pin and 2 pin connect integrated circuit
U2 60 pin and 61 pin, 1 pin and 2 pin of 5 pin and 6 pin connecting connector J4,3 pin of 8 pin connecting resistance R2 one end and connector J4,
The 7 pin connecting resistance R2 other end and connector J4 4 pin, 1 pin connect 5V power supplys, 4 pin ground connection；Integrated circuit U4, integrated circuit U5
Model MAX488.
PCI circuits of the present utility model are：The pin of the pin of the pin of integrated circuit U6 83 pin~90,93 pin~96,5 pin~8,17 pin
The pin of~22 pin, 30 pin, 31 pin, 33 pin~40, the pin of 92 pin and 91 pin, 9 pin, 16 pin, 32 pin, 15 pin, 12 pin~14,82 pin, 81
Pin, 10 the pin pin of connecting connector J6 66 pin, 65 pin, 31 pin, 64 pin, 30 pin~23,56 pin, 22 pin, 55 pin, 46 pin, 45 successively
Pin, 11 pin, 44 pin, 10 pin, 9 pin, 42 pin, 8 pin, 41 pin, 6 pin, 39 pin, 5 pin, 38 pin, 4 pin, 37 pin, 3 pin, 2 pin, 61 pin,
21 pin, 12 pin, 7 pin, 13 pin, 53 pin, 50 pin, 16 pin, 19 pin, 58 pin, 54 pin, the pin of integrated circuit U6 41 pin~48,63 pin
The pin of~70 pin, 62 pin~56,79 pin, 80 pin connect the pin of integrated circuit U2 134 pin, 139 pin~144,11 pin, 12 pin, 25 successively
The pin of the pin of pin~28,31 pin~36,113 pin, 114 pin, 110 pin, 107 pin, 108 pin, integrated circuit U6 71 pin pass through resistance R4
5 pin that integrated circuit U7 6 pin, 11 pin are grounded by resistance R6 and meet integrated circuit U7 are grounded and connect, 54 pin connect crystal oscillator Y2's
One end and electric capacity C1 one end, 55 pin connect the crystal oscillator Y2 other end and electric capacity C2 one end, 10 pin connect 3V power supplys by resistance R3,
Integrated circuit U6 23 pin, 77 pin, 78 pin, 97 pin, 98 pin connect 3V power supplys, integrated circuit U6 73 pin, 53 pin, 28 pin, 24 pin,
4 pin, 3 pin ground connection, the pin of integrated circuit U7 1 pin~4 and 7 pin ground connection, 8 pin connect the other end of 3V power supplys, electric capacity C1 and electric capacity C2
Ground connection, connector J6 15 pin connect 3V power supplys, 17 pin and 31 pin by resistance R5 and connect 3V power supplys, 36 pin and 43 pin short circuits, connect
Device J6 1 pin, 34 pin, 35 pin, 68 pin, 67 pin ground connection；Integrated circuit U6 models CH352L-P, integrated circuit U7 model
AT24C02。
Because the utility model employs FPGA circuitry, PCI circuits, RS232 drive circuits, RS422 drive circuits, FPGA
The control logic of circuit start PCI local bus and the control logic of 4 passage serial ports simultaneously receive the outside data transmitted, RS422
Drive circuit, RS232 drive circuits carry out level conversion and by data output, and the present apparatus is reasonable in design, simple in construction, peripheral member
Device is few, low cost, data processing speed fast, equipment Internet of Things ability is strong, with high speed data transfer ability, can promote the use of
Telecommunication circuit peripheral hardware is connected apparatus field with master control equipment.
Brief description of the drawings
Fig. 1 is electrical principle block diagram of the present utility model.
Fig. 2 is FPGA circuitry, RS232 drive circuits, the electronic circuit schematic diagram of RS422 drive circuits in Fig. 1.
Fig. 3 is the electronic circuit schematic diagram of PCI circuits in Fig. 1.
Embodiment
The utility model is described in further details with reference to the accompanying drawings and examples, but the utility model is not limited to this
A little embodiments.
Embodiment 1
In Fig. 1, RS232 and RS422 expansion board of the utility model based on cpci bus by FPGA circuitry, PCI circuits,
RS232 drive circuits, RS422 drive circuits are connected and composed, the input of the output termination FPGA circuitry of PCI circuits, FPGA electricity
The output termination RS232 drive circuits and the input of RS422 drive circuits on road.
In fig. 2, the FPGA circuitry of the present embodiment is connected and composed by integrated circuit U2, crystal oscillator Y1, connector J5, integrated electricity
Road U2 model EP1C6T144C8, crystal oscillator Y1 model JHY50M.The pin of integrated circuit U2 134 pin, 139 pin~144,
The pin of the pin of 11 pin, 12 pin, 25 pin~28,31 pin~36,113 pin, 114 pin, 110 pin, 107 pin, 108 pin connect PCI circuits, integrated electricity
Road U2 89 pin, 88 pin, 90 pin, the 95 pin connecting connector J5 pin of 4 pin~1, integrated circuit U2 106 pin, 105 pin, 77 pin, 76
Pin connects RS232 drive circuits, and integrated circuit U2 56 pin, 71 pin, 60 pin, 61 pin connect RS422 drive circuits, integrated circuit U2's
16 pin connect crystal oscillator Y1 4 pin, and integrated circuit U2 66 pin, 44 pin, 102 pin, 81 pin, 137 pin, 115 pin, 29 pin, 8 pin connect 3V electricity
Source, integrated circuit U2 94 pin, 15 pin, 117 pin, 64 pin, 55 pin, 46 pin, 126 pin, 135 pin connect 1.5V power supplys, integrated circuit
U2 23 pin, 22 pin, 138 pin, 136 pin, 127 pin, 118 pin, 116 pin, 101 pin, 80 pin, 65 pin, 63 pin, 54 pin, 45 pin, 43
Pin, 30 pin, 9 pin, 18 pin, 19 pin, 91 pin ground connection, connector J5 5 pin ground connection, crystal oscillator Y1 1 pin connect 3V power supplys, 3 pin ground connection.
In fig. 2, the RS232 drive circuits of the present embodiment are by integrated circuit U1, integrated circuit U3, connector J1, connection
Device J2 is connected and composed, and integrated circuit U1, integrated circuit U3 model GD75232, integrated circuit U1 15 pin and 17 pin connect collection
1 pin and 2 pin, 10 pin into 106 pin and 105 pin of circuit U 2,6 pin and 4 pin connecting connector J1 connect the negative pole of 12V power supplys, 1 pin and connect
The positive pole of 12V power supplys, 20 pin connect 5V power supplys, 11 pin ground connection, and integrated circuit U3 15 pin and 17 pin connect integrated circuit U2 77 pin
The negative pole of 12V power supplys, 1 pin, which are connect, with 76 pin, 6 pin and 4 pin connecting connector J2 1 pin and 2 pin, 10 pin connects the positive pole of 12V power supplys, 20
Pin connects 5V power supplys, 11 pin ground connection.
In fig. 2, the RS422 drive circuits of the present embodiment by integrated circuit U4, integrated circuit U5, resistance R1, resistance R2,
Connector J3, connector J4 are connected and composed, integrated circuit U4, integrated circuit U5 model MAX488.Integrated circuit U4 3 pin
1 pin and 2 pin of integrated circuit U2 56 pin and 71 pin, 5 pin and 6 pin connecting connector J3,8 pin connecting resistance R1 one end are connect with 2 pin
3 pin, 4 pin of the 7 pin connecting resistance R1 other end and connector J3 with connector J3,1 pin connect 5V power supplys, 4 pin ground connection, integrated electricity
Road U5 3 pin and 2 pin connect 1 pin and 2 pin of integrated circuit U2 60 pin and 61 pin, 5 pin and 6 pin connecting connector J4,8 pin connecting resistances
R2 one end and connector J4 3 pin, 4 pin of the 7 pin connecting resistance R2 other end and connector J4,1 pin connect 5V power supplys, 4 pin and connect
Ground.
In figure 3, the PCI circuits of the present embodiment are by integrated circuit U6, integrated circuit U7, resistance R3~resistance R6, electric capacity
C1, electric capacity C2, crystal oscillator Y2, connector J6 are connected and composed, integrated circuit U6 model CH352L-P, integrated circuit U7 model
For AT24C02.The pin of the pin of the pin of the pin of integrated circuit U6 83 pin~90,93 pin~96,5 pin~8,17 pin~22,30 pin, 31 pin, 33
The pin of pin~40, the pin of 92 pin and 91 pin, 9 pin, 16 pin, 32 pin, 15 pin, 12 pin~14,82 pin, 81 pin, 10 pin connecting connector successively
The pin of J6 66 pin, 65 pin, 31 pin, 64 pin, 30 pin~23,56 pin, 22 pin, 55 pin, 46 pin, 45 pin, 11 pin, 44 pin, 10 pin, 9
Pin, 42 pin, 8 pin, 41 pin, 6 pin, 39 pin, 5 pin, 38 pin, 4 pin, 37 pin, 3 pin, 2 pin, 61 pin, 21 pin, 12 pin, 7 pin, 13 pin,
53 pin, 50 pin, 16 pin, 19 pin, 58 pin, 54 pin, the pin of the pin of the pin of integrated circuit U6 41 pin~48,63 pin~70,62 pin~56,79
Pin, 80 pin connect successively the pin of the pin of the pin of integrated circuit U2 134 pin, 139 pin~144,11 pin, 12 pin, 25 pin~28,31 pin~36,
113 pin, 114 pin, 110 pin, 107 pin, 108 pin, integrated circuit U6 71 pin are grounded and connect the 6 of integrated circuit U7 by resistance R4
Pin, 11 pin are grounded by resistance R6 and connect integrated circuit U7 5 pin, and 54 pin connect crystal oscillator Y2 one end and electric capacity C1 one end, 55
Pin connects the crystal oscillator Y2 other end and electric capacity C2 one end, 10 pin connect 3V power supplys, integrated circuit U6 23 pin, 77 by resistance R3
Pin, 78 pin, 97 pin, 98 pin connect 3V power supplys, integrated circuit U6 73 pin, 53 pin, 28 pin, 24 pin, 4 pin, 3 pin ground connection, integrated electricity
The pin of road U7 1 pin~4 and 7 pin ground connection, 8 pin connect the other end ground connection of 3V power supplys, electric capacity C1 and electric capacity C2, connector J6 15 pin
3V power supplys, 17 pin and 31 pin are connect by resistance R5 and connect 3V power supplys, 36 pin and 43 pin short circuits, connector J6 1 pin, 34 pin, 35 pin,
68 pin, 67 pin ground connection.
Operation principle of the present utility model is as follows：
System electrification, first, integrated circuit U2 start initial work, complete FPGA hardware configuration work：Including PCI
The control logic of local bus, the control logic of 4 passage serial ports.At the same time, integrated circuit U6 starts initial work, configuration
Data are inputted from integrated circuit U7 pin 5, complete the configuration work of pci bus.Hereafter, circuit enters normal operating conditions.
First, the data to be received transmitted from outside such as integrated circuit U2.Data-signal is exported from connector J6, is input to
The pin of the pin of the pin of the pin of the pin of integrated circuit U6 83 pin~90,93 pin~96,5 pin~8,17 pin~22,30 pin, 31 pin, 33 pin~40, warp
Cross integrated circuit U6 general line system processing, data-signal is input to integrated electricity from the pin output of integrated circuit U6 63 pin~70
Road U2；
Secondly, integrated circuit U2 starts the control logic of serial ports, and the data of reception are forwarded by serial ports.Data are believed
Number exported from integrated circuit U2 106 pin, be input to integrated circuit U1 15 pin, handled by integrated circuit U1 level translations,
Exported from integrated circuit U1 6 pin, connector J1 is input to, from connector J1 output datas；Or integrated circuit U2 77 pin are defeated
Go out, be input to integrated circuit U3 15 pin, handled by integrated circuit U3 level translations, exported from integrated circuit U3 6 pin, it is defeated
Enter to connector J2, from connector J2 output datas；Or integrated circuit U2 56 pin output, integrated circuit U4 3 pin are input to,
Handled by integrated circuit U4 level translations, 5 pin, the output of 6 pin from integrated circuit U4 are input to connector J3, from connector
J3 output datas；Or integrated circuit U2 60 pin output, integrated circuit U5 3 pin are input to, are become by integrated circuit U5 level
Processing is changed, 5 pin, the output of 6 pin from integrated circuit U5 are input to connector J4, from connector J4 output datas.
Claims (5)
1. a kind of RS232 and RS422 expansion board based on cpci bus, it is characterised in that：Have：
The FPGA circuitry being controlled to device；
PCI circuits；The input of the output termination FPGA circuitry of the circuit；
RS232 drive circuits, the output end of the input termination FPGA circuitry of the circuit；
RS422 drive circuits, the output end of the input termination FPGA circuitry of the circuit.
2. RS232 the and RS422 expansion board according to claim 1 based on cpci bus, it is characterised in that described
FPGA circuitry is：The pin of the pin of the pin of integrated circuit U2 134 pin, 139 pin~144,11 pin, 12 pin, 25 pin~28,31 pin~36,113
Pin, 114 pin, 110 pin, 107 pin, 108 pin connect PCI circuits, integrated circuit U2 89 pin, 88 pin, 90 pin, 95 pin connecting connector J5
The pin of 4 pin~1, integrated circuit U2 106 pin, 105 pin, 77 pin, 76 pin connect RS232 drive circuits, integrated circuit U2 56 pin,
71 pin, 60 pin, 61 pin connect RS422 drive circuits, and integrated circuit U2 16 pin connect crystal oscillator Y1 4 pin, integrated circuit U2 66 pin,
44 pin, 102 pin, 81 pin, 137 pin, 115 pin, 29 pin, 8 pin connect 3V power supplys, integrated circuit U2 94 pin, 15 pin, 117 pin, 64
Pin, 55 pin, 46 pin, 126 pin, 135 pin connect 1.5V power supplys, integrated circuit U2 23 pin, 22 pin, 138 pin, 136 pin, 127 pin,
118 pin, 116 pin, 101 pin, 80 pin, 65 pin, 63 pin, 54 pin, 45 pin, 43 pin, 30 pin, 9 pin, 18 pin, 19 pin, 91 pin ground connection,
Connector J5 5 pin ground connection, crystal oscillator Y1 1 pin connects 3V power supplys, 3 pin ground connection；Integrated circuit U2 model EP1C6T144C8,
Crystal oscillator Y1 model JHY50M.
3. RS232 the and RS422 expansion board according to claim 1 based on cpci bus, it is characterised in that described
RS232 drive circuits are：Integrated circuit U1 15 pin and 17 pin connect integrated circuit U2 106 pin and 105 pin, 6 pin and 4 pin in succession
Connect device J1 1 pin and 2 pin, 10 pin and connect the negative pole of 12V power supplys, 1 pin and connect the positive pole of 12V power supplys, 20 pin and connect 5V power supplys, 11 pin and connect
Ground, integrated circuit U3 15 pin and 17 pin connect 1 pin and 2 of integrated circuit U2 77 pin and 76 pin, 6 pin and 4 pin connecting connector J2
Pin, 10 pin connect the negative pole of 12V power supplys, 1 pin connect the positive pole of 12V power supplys, 20 pin connect 5V power supplys, 11 pin ground connection；Integrated circuit U1, collection
Into the model GD75232 of circuit U 3.
4. RS232 the and RS422 expansion board according to claim 1 based on cpci bus, it is characterised in that described
RS422 drive circuits are：Integrated circuit U4 3 pin and 2 pin connect integrated circuit U2 56 pin and 71 pin, 5 pin and 6 pin connecting connectors
J3 1 pin and 2 pin, 3 pin of 8 pin connecting resistance R1 one end and connector J3, the 7 pin connecting resistance R1 other end and connector J3
4 pin, 1 pin connect 5V power supplys, 4 pin ground connection, and integrated circuit U5 3 pin and 2 pin connect integrated circuit U2 60 pin and 61 pin, 5 pin and 6 pin
Connecting connector J4 1 pin and 2 pin, 3 pin of 8 pin connecting resistance R2 one end and connector J4, the 7 pin connecting resistance R2 other end and company
Connect device J4 4 pin, 1 pin and connect 5V power supplys, 4 pin ground connection；Integrated circuit U4, integrated circuit U5 model MAX488.
5. RS232 the and RS422 expansion board according to claim 1 based on cpci bus, it is characterised in that described PCI
Circuit is：The pin of the pin of the pin of the pin of integrated circuit U6 83 pin~90,93 pin~96,5 pin~8,17 pin~22,30 pin, 31 pin, 33 pin~
40 pin, 92 pin and 91 pin, 9 pin, 16 pin, 32 pin, 15 pin, the pin of 12 pin~14,82 pin, 81 pin, 10 pin connecting connector J6 successively
The pin of 66 pin, 65 pin, 31 pin, 64 pin, 30 pin~23,56 pin, 22 pin, 55 pin, 46 pin, 45 pin, 11 pin, 44 pin, 10 pin, 9 pin, 42
Pin, 8 pin, 41 pin, 6 pin, 39 pin, 5 pin, 38 pin, 4 pin, 37 pin, 3 pin, 2 pin, 61 pin, 21 pin, 12 pin, 7 pin, 13 pin, 53 pin,
50 pin, 16 pin, 19 pin, 58 pin, 54 pin, the pin of the pin of the pin of integrated circuit U6 41 pin~48,63 pin~70,62 pin~56,79 pin, 80
Pin connect successively the pin of the pin of the pin of integrated circuit U2 134 pin, 139 pin~144,11 pin, 12 pin, 25 pin~28,31 pin~36,113 pin,
114 pin, 110 pin, 107 pin, 108 pin, integrated circuit U6 71 pin are grounded by resistance R4 and connect integrated circuit U7 6 pin, 11
Pin is grounded by resistance R6 and connects integrated circuit U7 5 pin, and 54 pin connect crystal oscillator Y2 one end and electric capacity C1 one end, 55 pin connect crystalline substance
The shake Y2 other end and electric capacity C2 one end, 10 pin connect 3V power supplys by resistance R3, integrated circuit U6 23 pin, 77 pin, 78 pin,
97 pin, 98 pin connect 3V power supplys, integrated circuit U6 73 pin, 53 pin, 28 pin, 24 pin, 4 pin, 3 pin ground connection, integrated circuit U7 1 pin
~4 pin and 7 pin ground connection, 8 pin connect the other end ground connection of 3V power supplys, electric capacity C1 and electric capacity C2, and connector J6 15 pin pass through resistance
R5 connects 3V power supplys, 17 pin and 31 pin and connects 3V power supplys, 36 pin and 43 pin short circuits, connector J6 1 pin, 34 pin, 35 pin, 68 pin, 67
Pin is grounded；Integrated circuit U6 models CH352L-P, integrated circuit U7 model AT24C02.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621317928.3U CN206322170U (en) | 2016-12-04 | 2016-12-04 | RS232 and RS422 expansion board based on CPCI bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621317928.3U CN206322170U (en) | 2016-12-04 | 2016-12-04 | RS232 and RS422 expansion board based on CPCI bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206322170U true CN206322170U (en) | 2017-07-11 |
Family
ID=59265900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621317928.3U Expired - Fee Related CN206322170U (en) | 2016-12-04 | 2016-12-04 | RS232 and RS422 expansion board based on CPCI bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206322170U (en) |
-
2016
- 2016-12-04 CN CN201621317928.3U patent/CN206322170U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170711 Termination date: 20171204 |