Virtual I/O Commissioning for Process Control Modules
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Solution Overview
Problem
The commissioning of process control systems in industrial plants is a complex and time-consuming process, requiring physical devices and connections, which limits the parallelism and independence of commissioning activities between the field and back-end environments, thereby extending the overall commissioning time and increasing costs.
Innovation Solution
I/O virtualization techniques allow for asynchronous commissioning of process control systems, enabling partial or complete commissioning of controllers and devices before integration into the plant, facilitating parallel and independent commissioning activities in both the field and back-end environments, even when communicatively disconnected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical devices and connections are required for commissioning, then reliability of communication is improved, but commissioning time increases
Solution Approach 1:
The patent creates virtual copies of I/O devices (virtual I/O objects) that replicate the functionality and communication interfaces of physical devices. These virtual objects allow commissioning activities to proceed in parallel by providing simulated communication paths that mirror actual device behavior, enabling back-end commissioning before physical devices are installed or connected.
Solution Approach 2:
The patent enables preliminary commissioning of control modules and I/O configurations using virtual I/O objects before physical devices are ready. Commissioning personnel can perform configuration, testing, and validation activities in advance using the virtual representations, so that when physical devices are connected, the commissioning process can continue without interruption rather than waiting for physical connectivity.
2Manufacturing precision
If physical connections are required for commissioning, then accuracy of device integration is improved, but parallelism of commissioning activities decreases
Solution Approach 1:
Virtual I/O objects create accurate digital representations of physical device interfaces and communication protocols. These copies maintain the same data structures, communication patterns, and integration behaviors as actual devices, allowing commissioning personnel to validate integration accuracy in parallel using virtual objects while physical devices are being installed or configured.
Solution Approach 2:
The patent separates commissioning activities into independent parallel tracks: one using virtual I/O objects for back-end configuration and testing, and another for physical device installation and connection. This segmentation allows different teams to work simultaneously on different aspects of commissioning without interfering with each other, while maintaining integration accuracy through the virtual representations.
3Reliability
If physical devices must be connected for commissioning, then validity of communication paths is improved, but scheduling flexibility decreases
Solution Approach 1:
Virtual I/O objects replicate valid communication paths and protocols, allowing commissioning personnel to test and validate communication flows, data formats, and integration logic using the same validated approaches as would be used with physical devices. This maintains communication path validity while enabling commissioning to proceed independently of physical device availability or scheduling constraints.
Data Source
AI summary
Disclosed herein are techniques for virtualizing the I/O of control modules that are to be implemented by a process controller in the runtime environment of a process plant. A configuration application identifies references to the I/O objects utilized by the control modules. In response, the configuration application generates virtual device signal tags (DSTs) to mimic the performance of the identified I/O objects. To facilitate testing and/or verification of the control module, e.g., during the commissioning of a back-end environment, the configuration application instantiates a virtual controller in a simulation environment. To generate the virtual controller, the configuration application replaces any references to the I/O objects with references to respective, generated virtual DSTs. Thus, by using the virtual DSTs as a proxy for the I/O to the field devices, the control module and/or controller may be tested prior to the field devices without the field environment being fully commissioned.