PLC firmware upgrade system and method
A firmware upgrade and upgrade identification technology, which is applied in the fields of instruments, electrical digital data processing, computer security devices, etc., can solve the problem of lack of power-off processing in PLC firmware upgrade, and achieve the purpose of preventing wrong upgrade problems, ensuring consistency, and preventing wrong operations. Effect
Active Publication Date: 2015-09-02
SHENZHEN INOVANCE TECH +1
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] The technical problem to be solved by the present invention is to provide a PLC firmware upgrade system and method for the lack of power-off processing in the above-mentioned PLC firmware upgrade
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0028] The present invention is applicable to the firmware upgrading of the PLC product based on microprocessor, and this PLC comprises PLC system and is independent of PLC system and is used for the upgrading guide system (BootLoader) of firmware upgrading, and wherein PLC system has all functions of PLC product, and upgrading The guidance system mainly upgrades the PLC system software. After the PLC is powered on and started, it first enters the upgrade guidance system, judges the upgrade flag (or upgrade pin), if it is valid, it starts the firmware upgrade process, otherwise it jumps to the PLC ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a programmable logic controller (PLC) firmware upgrading system, which comprises an upgrading judging unit, a system upgrading unit, an upgrading starting unit and an upgrading identifier which is arranged in a nonvolatile memory, wherein the upgrading judging unit is used for judging whether the upgrading identifier is valid or not and starting a PLC system to process a PLS task when the upgrading identifier is invalid; the system upgrading unit is used for receiving upgrading data and utilizing the upgrading data to update PLC system programs when the upgrading identifier is valid and identifying the upgrading identifier to be invalid after the data is updated; and the upgrading starting unit is used for setting the upgrading identifier to be valid and starting the firmware upgrading flow when receiving a firmware upgrading instruction. The invention also provides a PLC firmware upgrading method. Through the upgrading identifier and by judging whether the upgrading identifier is valid or not when the PLC is powered on, the firmware upgrading process is started, so that the re-upgrading is guaranteed after the PLC is restored in abnormal situation such as power failure in the firmware upgrading process.
Description
technical field [0001] The invention relates to the field of programmable logic controllers, and more specifically, to a PLC firmware upgrade system and method. Background technique [0002] With the continuous growth of the demand for automatic control of industrial equipment, the application field of PLC (Programmable Logic Controller) is rapidly expanding, and its functions are also being introduced. As the control unit of the industrial automation control system, PLC needs to continuously develop new functions and optimize existing functions in the face of expanding market demand and ever-changing application sites. [0003] At present, for PLC products that have been equipped on the customer's site and integrated on the industrial equipment of the equipment manufacturer, it is usually necessary to upgrade the PLC system by the service personnel of the PLC manufacturer or the user on site. [0004] In order to improve the ease of use and upgrade reliability of the produ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/445G06F21/51
Inventor 孟国军
Owner SHENZHEN INOVANCE TECH