Configurable Field Electronics for 4-20 mA and IO-Link Modes
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Solution Overview
Problem
Existing field devices require specialized electronics for each operating state or combination of features, such as 4-20 mA signal transmission, IO-Link communication, and different wire configurations, leading to inefficiencies and increased production costs.
Innovation Solution
A field device with uniformly embodied field device electronics that can be selectively operated in three different states: providing a 4-20 mA signal, enabling IO-Link communication, or providing both IO-Link communication and a 4-20 mA current output, using a common set of four connection pins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If specialized electronics are produced for each operating state or combination of features, then the field device can support multiple operating modes (4-20 mA, IO-Link, different wire configurations), but the device complexity and production costs increase
Solution Approach 1:
The patent implements a universal field device electronics design that can operate in multiple modes (4-20 mA signal transmission, IO-Link communication, and various wire configurations) using a single standardized hardware platform. The electronics are designed with configurable functionality that adapts to different operating states through software or configuration settings rather than requiring specialized hardware for each mode, thereby reducing device complexity while maintaining versatility
2Adaptability or versatility
If specialized electronics are produced for each operating state or combination of features, then the field device can support multiple operating modes, but the manufacturing efficiency and production costs worsen
Solution Approach 1:
The patent employs a universal electronics platform that can be manufactured once and used across all field device variants. This single design approach enables standardized production processes, bulk manufacturing benefits, and simplified supply chain management, thereby significantly improving manufacturing efficiency and productivity while still supporting multiple operating modes through configurable software or hardware switches
3Productivity
If a single design is used for all operating states, then the manufacturing efficiency and production costs improve, but the ability to support different wire configurations and communication protocols may be compromised
Solution Approach 1:
The patent incorporates dynamic configurability into the single design electronics, allowing the field device to adapt its operational characteristics based on detected conditions or user configuration. The electronics can dynamically switch between different wire configurations (two-, three-, or four-wire operation) and communication protocols (4-20 mA, IO-Link) through software control, enabling a static hardware design to achieve dynamic multi-functionality
Data Source
AI summary
An automation field device comprises at least four connection pins for connecting the field device; a field device electronics adapted, in a first operating state, to provide a 4-20 mA signal via a first and second connection pin, in a second operating state, to be supplied with a supply voltage via the first and a third connection pin and via a fourth connection pin to enable an IO-Link communication or to provide a first switch output and supplementally to provide a second switch output on the second connection pin, and, in a third operating state, to be supplied with the supply voltage via the first and third connection pins and via the fourth connection pin to enable the IO-Link communication or to provide the first switch output and supplementally to provide a 4-20 mA current output on the second connection pin.