Wireless IO-Link Master Interface Multiplexing
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Solution Overview
Problem
The existing IO-link wireless system extensions require a separate interface for each fieldbus, leading to significant technical effort and cost due to the lack of addressing level between wireless and wired IO-link devices, limiting the number of devices that can be connected and increasing installation complexity.
Innovation Solution
Implementing a wireless IO-link master that functions as a wire-bonded IO-link device, allowing up to 40 wireless devices to be connected by using a wire-bonded communication connection and expanding the address space through multiplexing, demultiplexing, virtual ports, parameter routing, and postbox mechanisms to enable efficient communication with multiple wireless devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate interface is implemented for each fieldbus in the wireless IO-link system, then the fieldbus compatibility is improved, but the device complexity and development cost increase significantly
Solution Approach 1:
The patent implements a universal wireless IO-link master that can communicate with multiple different fieldbuses (PROFIBUS-DP, PROFINET, EtherCAT, CANopen) through a single integrated interface. The system uses a fieldbus-independent communication layer that translates between wireless IO-link protocol and various fieldbus protocols, eliminating the need for separate interfaces for each fieldbus while maintaining full compatibility with standardized fieldbuses.
Solution Approach 2:
The patent introduces an intermediary communication layer between the wireless IO-link master and the fieldbus. This intermediary layer handles the protocol translation and data exchange, allowing the wireless master to interact with different fieldbuses through a standardized interface. The intermediary manages the addressing level expansion and data routing between wireless devices and fieldbus slaves.
2Quantity of substance
If the address space is expanded to support multiple wireless devices, then the number of connectable devices is improved, but the addressing mechanism complexity increases
Solution Approach 1:
The patent expands the addressing mechanism by introducing an additional dimension to the address space. Instead of using traditional single-level addressing, the system implements a two-dimensional addressing structure combining wireless device addresses with fieldbus slave addresses. This allows up to 40 wireless IO-link devices to be connected, each capable of addressing multiple fieldbus slaves, thereby expanding the total number of connectable devices without proportionally increasing addressing complexity.
Solution Approach 2:
The patent segments the addressing function into separate components: wireless device identification and fieldbus slave identification. The wireless master maintains a mapping between wireless device addresses and fieldbus slave addresses, allowing the system to manage multiple devices by segmenting the addressing task rather than requiring a single complex address space.
3Ease of operation
If wireless IO-link devices are connected without separate interfaces, then the installation complexity is reduced, but the technical effort for development and radio authorization increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring the wireless master with standardized communication parameters and protocols before deployment. The system includes pre-established radio frequency channels, pre-defined data formats, and pre-configured error handling mechanisms. This allows the wireless master to be deployed and connected to fieldbuses without requiring extensive on-site development or configuration, significantly reducing installation complexity while the standardized design minimizes development time through reuse of proven communication stacks.
Data Source
AI summary
Equipment for the wireless operation of IO-link devices in an IO-link communication network, including an IO-link master connected to a fieldbus a wire-bonded communication network and at least one wirelessly communicating IO-link device, has a wire-bonded IO-link device serving as a wireless IO-link device interface for the wireless communication with the at least one wirelessly communicating IO-link device.