I/O Station Diagnostics Buffering for On-Demand Network Retrieval
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Solution Overview
Problem
Existing I/O stations in industrial automation systems lack direct and efficient means to provide diagnostics data to network devices, relying on interrupt-driven methods that hinder seamless data collection and analysis.
Innovation Solution
An I/O station equipped with data storage to store and send a set of diagnostics data upon request, allowing network devices to access comprehensive diagnostics data, including conditions before unscheduled shutdowns, via a network interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If interrupt-driven diagnostics data collection is used, then diagnostics data can be collected when events occur, but data access is inefficient and requires controller intervention
Solution Approach 1:
The I/O station autonomously stores and manages diagnostics data in its own memory without requiring controller intervention. The station independently collects diagnostics data from field devices and makes it accessible to network devices, enabling self-service data management that eliminates the need for controller-mediated data retrieval
Solution Approach 2:
The I/O station acts as an intermediary between field devices and network devices for diagnostics data exchange. Instead of controllers mediating all data access, the I/O station directly interfaces with network devices through the fieldbus network, enabling efficient peer-to-peer communication while the controller focuses on control functions
2Ease of operation
If diagnostics data is stored locally in I/O station, then direct access to comprehensive diagnostics data is enabled, but I/O station memory requirements increase
Solution Approach 1:
The patent extracts only the essential diagnostics data from field devices and stores it in the I/O station's memory. By selecting and storing only relevant diagnostic information rather than all possible data, the memory requirements are minimized while still providing comprehensive diagnostics access to network devices
Solution Approach 2:
The I/O station implements local storage of diagnostics data with specific quality and detail appropriate for the station's diagnostic needs. Different types of diagnostics data are stored with varying levels of detail and retention periods, optimizing memory usage by allocating storage resources to the most critical diagnostic information
Data Source
AI summary
The present disclosure relates to an I/O station, connected with a plurality of network devices in an automation system. The I/O station includes a plurality of I/O modules, each I/O module providing one or more I/O channels, each I/O channel connecting a respective field device. The I/O station also includes an I/O network interface for forwarding data between the I/O modules and the network devices via a network. The I/O station also includes a data storage storing a set of diagnostics data, the set including a plurality of entries of diagnostics data, each entry relating to performance of the automation system. The I/O station is operative to, in response to a request from anyone of the network devices, send the stored set of diagnostics data to the requesting network device.