Error handling method for programmable logic controllers

An error handling and programming logic technology, applied in the direction of electrical testing/monitoring, etc., can solve problems such as inability to meet actual needs, and achieve the effect of enhancing error handling capabilities and meeting different control needs

Active Publication Date: 2014-08-06
SCHNEIDER ELECTRIC IND SAS
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as mentioned earlier, other unrelated subsystems may wish to continue running without any error handling
Obviously, the existing PLC error handling mechanism can no longer meet the actual needs

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Error handling method for programmable logic controllers
  • Error handling method for programmable logic controllers
  • Error handling method for programmable logic controllers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Next, a PLC error handling method according to an embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the invention described herein may also be embodied in other ways, so the scope of the invention is not limited to the specific embodiments described herein.

[0022] First, refer to figure 1 An error handling method 100 in a programmable logic controller PLC according to an embodiment of the present invention will be described. The PLC controls a plurality of subsystems that have no relationship to each other, and each subsystem is associated with at least one control program.

[0023] Such as figure 1 As shown, the PLC error handling method 100 starts at step S101.

[0024] In step S110, for each of the plurality of subsystems, at least one control program associated with the subsystem is compiled into a group.

[0025] In step S120, an operation error of the control program in the PLC is detected. ...

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

No PUM Login to view more

Abstract

The invention provides an error handling method for PLCs (programmable logic controllers). The PLCs are provided with a plurality of correlated subsystems. Each subsystem is correlated to at least one control program. The error handling method includes the steps: the control programs correlated to each of the subsystems are organized in a group; run errors of the control programs in the PLCs are detected; if the run errors are not negligible, a handling mode of the run errors is determined, and the group that the control programs having the run errors belong to is subjected to error handling according to the determined handling mode. The control programs running in the PLCs are grouped according to the subsystems that the control programs belong to, the different subsystems are subjected to the error handling modes that adapt to the subsystems, other non-correlated subsystems are kept running continuously and not subjected to error handling, and the different control demands of the subsystems can be met and error handling capacities of the PLCs can be enhanced.

Description

technical field [0001] The invention relates to the field of programmable logic controllers, in particular to an error handling method of a programmable logic controller. Background technique [0002] When a program running error occurs in a programmable logic controller (PLC), the PLC can determine whether the program running error is negligible according to the actual situation. When the PLC determines that the program running error cannot be ignored, according to the existing PLC error handling mechanism, most PLCs will stop all running programs and keep the output or output the preset value for error handling. [0003] However, a PLC may sometimes control multiple unrelated subsystems, each of which wishes to remain operational without being affected by errors in other unrelated subsystems. [0004] If the existing PLC error handling mechanism is still used, once a non-negligible operation error occurs in any subsystem in the PLC, the PLC will stop running the programs ...

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
no application Login to view more
IPC IPC(8): G05B23/02
Inventor 梁军
Owner SCHNEIDER ELECTRIC IND SAS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap