Ring Network Wiring Fault Detection in PLC Slave Connections
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Solution Overview
Problem
In networks with ring topology, incorrect wiring paths can go undetected by master devices, making it difficult for administrators to identify and correct errors without manual site checks.
Innovation Solution
A master device is equipped with detection, port control, and specification components to identify incorrect wiring paths by communicating with slave devices, invalidating specific ports, and outputting error information to processing devices, allowing for automated detection and display of incorrect connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If slave devices are connected through wiring in a ring topology network, then network redundancy and reliability are improved, but incorrect wiring paths cannot be detected and become harmful factors
Solution Approach 1:
The master device performs preliminary detection of the network configuration before normal operation begins. By detecting the network configuration in advance and comparing it with the expected configuration, the system can identify incorrect wiring paths before they cause operational problems, thus preventing harmful effects while maintaining network reliability
Solution Approach 2:
The system implements a feedback mechanism where the master device continuously monitors and detects the actual network configuration, compares it with the expected configuration, and provides information about detected discrepancies. This feedback loop enables automatic identification of incorrect wiring paths without requiring manual site checks
2Measurement precision
If manual site checks are performed to identify incorrect wiring paths, then detection accuracy is improved, but time consumption and operational complexity increase
Solution Approach 1:
The network system performs self-diagnosis through automated detection by the master device. The system uses detection data including time stamp information to automatically identify incorrect wiring paths without requiring external manual intervention, thus achieving high detection accuracy while eliminating time-consuming site checks
Solution Approach 2:
The patent replaces manual mechanical site checks with an automated electronic detection system. The master device uses communication protocols to automatically detect network configuration and identify wiring errors, substituting human operators with an automated system that provides equivalent or superior detection accuracy without time loss
Data Source
AI summary
A master device manages a plurality of slave devices constituting a network including a ring topology. The plurality of slave devices includes: a first slave device serving as a starting point and a terminal point of the ring topology; and a plurality of second slave devices connected between a first output port of the first slave device and a second output port thereof and constituting the ring topology. On the basis of a network configuration detected when the second output port and the output port of a second slave device paired with the second output port are available and of a network configuration detected when the second output port and the output port paired therewith have been made unavailable, the master device determines an incorrect wiring path between the first output port and the second output port and outputs information indicating the incorrect wiring path to an information processing device.