CN202998167U - Protocol converter - Google Patents

Protocol converter Download PDF

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Publication number
CN202998167U
CN202998167U CN 201220701676 CN201220701676U CN202998167U CN 202998167 U CN202998167 U CN 202998167U CN 201220701676 CN201220701676 CN 201220701676 CN 201220701676 U CN201220701676 U CN 201220701676U CN 202998167 U CN202998167 U CN 202998167U
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China
Prior art keywords
protocol converter
module
cpu
protocol
modules
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Active
Application number
CN 201220701676
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Chinese (zh)
Inventor
张德霞
冯建科
吕昌江
刘汉杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Jicheng electronic Limited by Share Ltd
Original Assignee
QINGDAO INTEGRATED ELECTRONIC CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
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Application filed by QINGDAO INTEGRATED ELECTRONIC CO Ltd filed Critical QINGDAO INTEGRATED ELECTRONIC CO Ltd
Priority to CN 201220701676 priority Critical patent/CN202998167U/en
Application granted granted Critical
Publication of CN202998167U publication Critical patent/CN202998167U/en
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Abstract

The utility model relates to a protocol converter. The technical scheme is that: the protocol converter comprises a CPU and a power supply module; a PIC chip is adopted by a CPU; a power source module comprises an isolation voltage stabilization dual-output power supply module and an isolation voltage stabilization single-output power supply module; the protocol converter further comprises a communication module which includes an uplink 485 module and a downlink 485 module; an optical electric isolator is disposed between the two 485 modules and the CPU; and the protocol converter is connected with all devices and enables communication protocols of the devices to be converted into standard MODBUS communication protocols. The protocol converter allows an existing main station to be connected with various complex detection metering devices and enables effective data communication to be carried out. The protocol converter has a high-density integrated circuit structure, exhibits high interference resistance and high reliability, and can be widely applied to distributed data collection and protocol conversion environments of various automatic systems.

Description

A kind of protocol converter
Technical field
The utility model belongs to communication technical field, is specifically related to a kind of protocol converter.
Background technology
Protocol converter is mainly used in various automated network communication situations, carries out the conversion of communication protocol.Carry out data communication by devices such as the serial line interface such as RS232/422/485 and relaying protection, fault oscillograph, kilowatt-hour meter, direct current cabinets, be sent to monitoring backstage or other application systems by network or serial ports according to the communication protocol standard of user's appointment after routine processes.Existing protocol converter function is single, can not be widely used in the distributed data acquisition and protocol conversion environment of all kinds of automated systems.
Summary of the invention
The utility model proposes a kind of can the connection with various complicated and diversified detection measuring instruments having main website, and carry out the protocol converter of active data communication.
The utility model is by the following technical solutions: a kind of protocol converter, comprise CPU and power module, CPU adopts pic chip, power module comprises isolation voltage stabilizing dual output power module and the single out-put supply module of isolation voltage stabilizing, also comprise communication module, protocol converter is connected with each equipment, the communications protocol of equipment is converted to the MODBUS communications protocol of standard, communication module comprises up 485 modules and descending 485 modules, is provided with photoelectric isolating device between two-way 485 modules and CPU.
CPU selects PIC18F6520, the chip internal aboundresources, and applying flexible is convenient.The communications parameter of transducer can be set flexibly, configurable and copy the metering detecting instrument of getting the several data stipulations, make the autgmentability of protocol converter and configuration flexibility greatly strengthen.
Input voltage range is direct current 18V-36V, and the typical case is input as 24V.Input voltage is through the two 5V of isolation voltage stabilizing dual output power module WRD240505P-3W output, and every road maximum output current is 300 mA; Can externally export the 12V DC power supply.External input voltage is through the single out-put supply module of isolation voltage stabilizing WRB2412CKS-3W output 12V.Power output is 1W, maximum output current 83mA.
Two-way 485 designing circuitry comprise that up 485 and descending 485, descending 485 are designed with the upper and lower resistance that draws, and increase the carrying load ability of system.Up 485 are designed with the build-out resistor in gateable 120 Europe.The output of every road is all isolated through photoelectric isolating device TLP281, has increased anti-interference and the stability of system.Protocol converter can convert the communications protocol of devices from different manufacturers to the MODBUS communications protocol of standard.
In addition, pin-saving chip, liquid crystal reserved opening and watchdog chip can be set outside pic chip.
The exterior storage circuit is set, is used for preserving and needs not obliterated data of power down, can select as required the storage chip of different memory spaces, as 24C01,24C02,24C16 (1K, 2K, 16K) etc., can not weld if do not need.
In order to facilitate field adjustable, circuit design reserves the Liquid Crystal Module output interface, takes the form of contact pin, plugs when debugging needs liquid crystal display to get final product.
Watchdog chip can be realized the Real Time Monitoring to the CPU operation, guarantees Systems balanth.
The beneficial effects of the utility model are: the utility model protocol converter can be connected with various complicated and diversified detection measuring instruments having main website, and carries out the active data communication.The utility model circuit structure High Density Integration, antijamming capability is strong, and reliability is high, can be widely used in the distributed data acquisition and protocol conversion environment of all kinds of automated systems.
Description of drawings
Fig. 1 is the structure principle chart of the utility model embodiment.
Embodiment
A kind of protocol converter comprises CPU and power module, and CPU adopts pic chip, and power module comprises isolation voltage stabilizing dual output power module and the single out-put supply module of isolation voltage stabilizing.Input voltage is 24V, and input voltage is through the two 5V of isolation voltage stabilizing dual output power module output.External input voltage is through the single out-put supply module of isolation voltage stabilizing WRB2412CKS-3W output 12V.
Also comprise communication module, protocol converter is connected with each equipment, the communications protocol of equipment is converted to the MODBUS communications protocol of standard, communication module comprises up 485 modules and descending 485 modules, be provided with photoelectric isolating device between two-way 485 modules and CPU, increased anti-interference and the stability of system.Protocol converter converts the communications protocol of devices from different manufacturers to the MODBUS communications protocol of standard.
In addition, pin-saving chip, liquid crystal reserved opening and watchdog chip are set outside pic chip.

Claims (2)

1. protocol converter, comprise CPU and power module, it is characterized in that: CPU adopts pic chip, power module comprises isolation voltage stabilizing dual output power module and the single out-put supply module of isolation voltage stabilizing, also comprise communication module, communication module comprises up 485 modules and descending 485 modules, is provided with photoelectric isolating device between two-way 485 modules and CPU, protocol converter is connected with each equipment, the communications protocol of equipment is converted to the MODBUS communications protocol of standard.
2. a kind of protocol converter according to claim 1, is characterized in that: also be provided with pin-saving chip, liquid crystal reserved opening and watchdog chip outside pic chip.
CN 201220701676 2012-12-18 2012-12-18 Protocol converter Active CN202998167U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220701676 CN202998167U (en) 2012-12-18 2012-12-18 Protocol converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220701676 CN202998167U (en) 2012-12-18 2012-12-18 Protocol converter

Publications (1)

Publication Number Publication Date
CN202998167U true CN202998167U (en) 2013-06-12

Family

ID=48569291

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220701676 Active CN202998167U (en) 2012-12-18 2012-12-18 Protocol converter

Country Status (1)

Country Link
CN (1) CN202998167U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103595709A (en) * 2013-10-24 2014-02-19 大连国宁电子有限公司 Protocol conversion board

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103595709A (en) * 2013-10-24 2014-02-19 大连国宁电子有限公司 Protocol conversion board

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Legal Events

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C14 Grant of patent or utility model
GR01 Patent grant
CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: 266071 Room 601, Building 3, Qingdao Software Park, 288 Ningxia Road, Shinan District, Qingdao City, Shandong Province

Patentee after: Qingdao Jicheng electronic Limited by Share Ltd

Address before: 266071 Shandong city of Qingdao province Ningxia City Road No. 288 Qingdao Software Park Building No. 3 Room 516

Patentee before: Qingdao Integrated Electronic Co., Ltd.