IO-Link Master-Coupler Control for Password-Protected Modes
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Solution Overview
Problem
The conventional IO-Link standard lacks the ability to manage access rights for writing to and reading from certain indexes, and there is no way to activate a coupler for data packet looping between IO-Link components, limiting parameterization and control capabilities.
Innovation Solution
A master device that outputs process data cyclically and device data acyclically, using a predetermined password to switch a coupler and slave into protected operating modes, enabling parameterization beyond standard configuration, and a coupler that switches between transmit, configuration, and protected operating modes based on control commands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conventional IO-Link standard is used for data exchange between master and slave, then basic communication functionality is maintained, but access rights for writing to and reading from certain indexes cannot be managed
Solution Approach 1:
The patent introduces a password parameter that can be integrated into the data packet structure. This parameter change enables the master to authenticate and authorize access to specific indexes, thereby managing access rights while maintaining the existing IO-Link communication framework.
Solution Approach 2:
The patent employs a coupler as an intermediary device between the master and slave. The coupler receives data packets from the master, processes authentication information, and forwards authorized data to the slave, thereby enabling access rights management without directly modifying the master-slave communication protocol.
2Adaptability or versatility
If a coupler is connected between IO-Link master and slave for data packet looping, then extended functionality is enabled, but the coupler cannot be activated or controlled in conventional IO-Link systems
Solution Approach 1:
The patent enables the coupler to autonomously process control commands received through data packets. The coupler can independently authenticate commands, switch between operating modes, and perform parameterization without requiring additional control infrastructure, thereby enabling activation and control within the existing IO-Link framework.
Solution Approach 2:
The patent designs the coupler to handle multiple functions including data packet forwarding, authentication processing, mode switching, and parameterization. This multi-functionality allows the coupler to be controlled entirely through standard IO-Link data packets, eliminating the need for separate control mechanisms.
3Reliability
If password protection is implemented for mode switching, then security and access control are improved, but the communication protocol complexity increases
Solution Approach 1:
The patent merges the password authentication mechanism with the existing data packet structure. The password information is integrated into the same communication frames used for normal data exchange, eliminating the need for separate authentication protocols and minimizing protocol complexity while maintaining security.
Data Source
AI summary
The disclosure relates to a master for connecting to a communications network, wherein the master is designed such that, according to a predetermined communications standard, it outputs process data cyclically and device data acyclically to the communications network, and such that it outputs, by means of the device data, a predetermined control command including a predetermined password to the communications network.