CN202771180U - Programmable controller capable of saving when power goes off - Google Patents
Programmable controller capable of saving when power goes off Download PDFInfo
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- CN202771180U CN202771180U CN 201220145931 CN201220145931U CN202771180U CN 202771180 U CN202771180 U CN 202771180U CN 201220145931 CN201220145931 CN 201220145931 CN 201220145931 U CN201220145931 U CN 201220145931U CN 202771180 U CN202771180 U CN 202771180U
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- external power
- programmable logic
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Abstract
The utility model relates to a programmable controller capable of saving when power goes off. That user programs and working data edited by a user on an RAM are stored on a nonvolatile memory through a CPU when power goes off is realized through an external power source detecting module, so that possibilities of data loss caused by different conditions are eliminated. And the erase write frequency of the programmable controller capable of saving when power goes off is low and the service lifetime of the programmable controller capable of saving when power goes off is prolonged substantially.
Description
Technical field
The utility model relates to the programmable logic controller (PLC) field, more specifically is the preservable Programmable Logic Controller of a kind of outage.
Background technology
Traditional Programmable Logic Controller mostly is greatly the multi-chip combination, common this Programmable Logic Controller is after externally working power disconnects, inner standby power supply can't continue to provide electric energy for a long time, causes losing of user program or user data, causes terminal device can't use or operational failure.
The utility model content
In order to address the above problem, the purpose of this utility model is to propose the preservable Programmable Logic Controller of a kind of outage, user program or the user data write before the outage can be preserved, and reduces the unnecessary loss that brings because of outage.
The utility model proposes the preservable Programmable Logic Controller of a kind of outage, it comprises:
External power source detection module: for detection of unlatching and the disconnection of external power source.
CPU: be connected with the external power source detection module, corresponding control signal is analyzed and sent to the unlatching of the external power source that reception external power source detection module detects and the signal of disconnection;
RAM: be connected with CPU, be used for data and the control signal of storage CPU present analysis;
Nonvolatile memory: be connected with CPU, RAM respectively, according to the control signal that CPU sends, receive the data of storing among the described RAM, and it is stored.
Peripheral I/O module: be connected with CPU, be used for gathering and exporting peripheral digital signal, and gather and export peripheral simulating signal.
PERCOM peripheral communication part: be connected with CPU, be used for signal transmission and data and process.
The preservable Programmable Logic Controller of described a kind of outage also has power-off delay circuit, is used for prolonging detecting power-off signal to the out-of-work time of chip, guarantees that the data of storing among the RAM can be delivered in the nonvolatile memory fully.
Described power-off delay circuit is capacitor charge and discharge circuit or standby battery circuit.
Described nonvolatile memory is one or more among FLASH, EPROM, the EEPROM.
The utility model is delivered on the CPU by the unlatching of the detection external power source of external power source detection module and the information of disconnection; analyzed by CPU again and send corresponding control signal on RAM or nonvolatile memory; store thus user program or user data, the protection terminal device.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Accompanying drawing 1 is the circuit structure schematic block diagram of the utility model preferred embodiment.
Embodiment
Referring to Fig. 1, the utility model proposes the preservable Programmable Logic Controller of a kind of outage, it comprises:
External power source detection module: for detection of unlatching and the disconnection of external power source.
CPU: be connected with the external power source detection module, corresponding control signal is analyzed and sent to the unlatching of the external power source that reception external power source detection module detects and the signal of disconnection;
RAM: be connected with CPU, be used for data and the control signal of storage CPU present analysis;
Nonvolatile memory: be connected with CPU, RAM respectively, according to the control signal that CPU sends, receive the data of storing among the described RAM, and it is stored.
Peripheral I/O module: be connected with CPU, be used for gathering and exporting peripheral digital signal, and gather and export peripheral simulating signal.
PERCOM peripheral communication part: be connected with CPU, be used for signal transmission and data and process.
Described a kind of preservable Programmable Logic Controller that cuts off the power supply can also be carried out the instruction set that writes in Programmable Logic Controller by the sequential delivery that the user needs by computing machine by the user, but this editing controller is when carrying out execution work according to user program, and the data of processing in real time all are stored among the RAM.When detecting power supply, the external power source detection module is in closing process, CPU just stops the execution of user program, enter the preservation of user's real time data, user data is transferred to the nonvolatile memory from RAM, when the external power source detection module detects the process that power supply is in unlatching, CPU recovers data on the nonvolatile memory again in RAM, after the power supply opening process finishes, enter normal power supply, CPU just begins to enter the execution of user program.The preservable Programmable Logic Controller of described a kind of outage gathers and exports peripheral digital signal and peripheral simulating signal by peripheral I/O module, also partly carries out signal transmission and data by PERCOM peripheral communication and processes.
In the process that data are preserved, may be shorter to the time that power supply finishes from judging power-off, so just can suitably increase power-off delay circuit, preferably, described power-off delay circuit is capacitor charge and discharge circuit or standby battery circuit, be used for prolongation and detect power-off signal to the out-of-work time of chip, guarantee that the data of storing among the RAM can be delivered in the nonvolatile memory fully.
Described nonvolatile memory is one or more among FLASH, EPROM, the EEPROM.Can select different nonvolatile memory storeies according to different demands, to reach the requirement of storage.
Nonvolatile memory is all adopted in the storage of the user program that adopts of the present utility model, operational data, has avoided various situations to cause the possibility of loss of data, but is that the erasable frequency of editing controller is low in addition, and can be greatly improved serviceable life.
Last institute should be noted that; above embodiment is only in order to the technical solution of the utility model to be described but not to the restriction of the utility model protection domain; although with reference to preferred embodiment the utility model has been done detailed description; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement the technical solution of the utility model, and not break away from essence and the scope of technical solutions of the utility model.
Claims (4)
- One kind the outage preservable Programmable Logic Controller, it is characterized in that: it comprises:External power source detection module: for detection of unlatching and the disconnection of external power source;CPU: be connected with the external power source detection module, corresponding control signal is analyzed and sent to the unlatching of the external power source that reception external power source detection module detects and the signal of disconnection;RAM: be connected with CPU, be used for data and the control signal of storage CPU present analysis;Nonvolatile memory: be connected with CPU, RAM respectively, according to the control signal that CPU sends, receive the data of storing among the described RAM, and it is stored;Peripheral I/O module: be connected with CPU, be used for gathering and exporting peripheral digital signal, and gather and export peripheral simulating signal;PERCOM peripheral communication part: be connected with CPU, be used for signal transmission and data and process.
- 2. the preservable Programmable Logic Controller of a kind of outage as claimed in claim 1, it is characterized in that: the preservable Programmable Logic Controller of described a kind of outage also has power-off delay circuit, be used for prolongation and detect power-off signal to the out-of-work time of chip, guarantee that the data of storing among the RAM can be delivered in the nonvolatile memory fully.
- 3. the preservable Programmable Logic Controller of a kind of outage as claimed in claim 2, it is characterized in that: described power-off delay circuit is capacitor charge and discharge circuit or standby battery circuit.
- 4. the preservable Programmable Logic Controller of a kind of outage as claimed in claim 1, it is characterized in that: described nonvolatile memory is one or more among FLASH, EPROM, the EEPROM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220145931 CN202771180U (en) | 2012-04-10 | 2012-04-10 | Programmable controller capable of saving when power goes off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220145931 CN202771180U (en) | 2012-04-10 | 2012-04-10 | Programmable controller capable of saving when power goes off |
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| Publication Number | Publication Date |
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| CN202771180U true CN202771180U (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220145931 Expired - Fee Related CN202771180U (en) | 2012-04-10 | 2012-04-10 | Programmable controller capable of saving when power goes off |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242612A (en) * | 2015-11-05 | 2016-01-13 | 中国船舶重工集团公司第七一六研究所 | Vehicle-mounted display terminal with real-time data storage function and method thereof |
| CN105280231A (en) * | 2015-07-23 | 2016-01-27 | 深圳市振邦智能科技有限公司 | Method and apparatus for reducing erasure/write frequency of EEPROM |
| CN106528457A (en) * | 2015-09-09 | 2017-03-22 | 施耐德电器工业公司 | Programmable logic controller and method of saving data during power failure thereof |
| CN107861455A (en) * | 2017-10-17 | 2018-03-30 | 福州耐特电子科技有限公司 | The Visualized management system and method for a kind of programmable controller |
| CN114428477A (en) * | 2021-12-07 | 2022-05-03 | 首钢京唐钢铁联合有限责任公司 | Programmable Logic Controller (PLC), data recovery method and device thereof and storage medium |
-
2012
- 2012-04-10 CN CN 201220145931 patent/CN202771180U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280231A (en) * | 2015-07-23 | 2016-01-27 | 深圳市振邦智能科技有限公司 | Method and apparatus for reducing erasure/write frequency of EEPROM |
| CN106528457A (en) * | 2015-09-09 | 2017-03-22 | 施耐德电器工业公司 | Programmable logic controller and method of saving data during power failure thereof |
| CN106528457B (en) * | 2015-09-09 | 2020-05-29 | 施耐德电器工业公司 | Programmable logic controller and method for preserving data during power failure thereof |
| CN105242612A (en) * | 2015-11-05 | 2016-01-13 | 中国船舶重工集团公司第七一六研究所 | Vehicle-mounted display terminal with real-time data storage function and method thereof |
| CN107861455A (en) * | 2017-10-17 | 2018-03-30 | 福州耐特电子科技有限公司 | The Visualized management system and method for a kind of programmable controller |
| CN114428477A (en) * | 2021-12-07 | 2022-05-03 | 首钢京唐钢铁联合有限责任公司 | Programmable Logic Controller (PLC), data recovery method and device thereof and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Fuzhou Lightech Electronics Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20180410 |
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| CF01 | Termination of patent right due to non-payment of annual fee |