Modular Controller Port Protocol Adaptation
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Solution Overview
Problem
Modular control systems, particularly skid-mounted systems with PLCs, face integration challenges in large DCS due to proprietary protocols, limited communication port configurations, and security issues, leading to increased complexity and costs.
Innovation Solution
An enhanced modular controller with configurable communication ports and a software layer that allows for flexible configuration options, enabling operation as multiple nodes in a DCS without the need for external switches or firewalls, and supporting various communication protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional PLC communication ports are used with proprietary protocols, then protocol-specific communication is achieved, but system complexity and integration difficulty increase
Solution Approach 1:
The patent implements a universal communication port architecture where a single physical port can dynamically configure to support multiple communication protocols including proprietary protocols, standard industrial protocols, and Ethernet-based protocols. This multi-functionality eliminates the need for separate dedicated ports for each protocol type, thereby reducing device complexity while maintaining broad protocol compatibility and adaptability across different control system environments.
Solution Approach 2:
The communication port's operational parameters such as protocol type, data format, baud rate, and communication mode are made dynamically changeable through software configuration. This allows the same physical port to adapt its parameters to match the requirements of different protocols and communication scenarios, achieving high versatility without adding physical complexity to the hardware architecture.
2Adaptability or versatility
If multiple dedicated communication ports are provided for different protocols, then protocol versatility is improved, but device complexity and cost increase
Solution Approach 1:
Instead of providing multiple dedicated physical ports for different communication protocols, the patent employs a universal port design where a single physical interface can be software-configured to support multiple protocols. This approach maintains protocol versatility while significantly reducing the number of physical ports required, thereby lowering device complexity and associated costs.
Solution Approach 2:
The patent merges the functionality of multiple protocol-specific ports into a single unified communication port. By combining protocol handling capabilities within one physical interface and using software to differentiate between protocol types, the system achieves the same communication versatility as multiple dedicated ports would provide, but with reduced hardware complexity and cost.
3Reliability
If external switches and firewalls are added for security and communication management, then communication control and security are improved, but system complexity and cost increase
Solution Approach 1:
The patent merges security management and communication control functions directly into the controller's software architecture. Instead of requiring external firewalls and switches, the controller includes integrated software-based security mechanisms that can filter, authorize, and manage communication between different system components, thereby achieving the same security and control objectives without adding external devices or increasing system complexity.
Solution Approach 2:
The patent introduces a software-based communication management layer that acts as an intermediary between different communication ports and protocols. This software intermediary handles protocol translation, security authorization, and communication routing internally, eliminating the need for external switches and firewalls while maintaining the same level of security and communication control.
4Measurement precision
If configuration parameters are manually set for each communication port, then communication precision is improved, but ease of operation deteriorates
Solution Approach 1:
The patent implements pre-configured communication templates and profiles that contain commonly used protocol settings and parameters. These pre-configured options allow users to quickly deploy standard communication scenarios without manually configuring each parameter, thereby maintaining configuration precision for standard cases while significantly improving ease of operation. Users can select from pre-defined templates rather than configuring everything from scratch.
Solution Approach 2:
The system includes automated detection and configuration assistance that provides feedback to users during the configuration process. The software can automatically detect the required communication protocol and suggest appropriate configuration parameters, or validate user-configured parameters against protocol requirements, thereby ensuring configuration precision while guiding users through the process to improve ease of operation.
Data Source
AI summary
An enhanced modular controller is disclosed that includes a plurality of configurable communication ports and a control logic layer operable to control equipment of a process plant. The plurality of communication ports include a first set of communication ports and a second set of communication ports which are operable to communicate with one or more nodes of a distributed control system of the process plant. The enhanced modular controller also includes a software layer that accepts port configuration parameters that define one or more port communication rules for the first set of communication ports and for the second set of communication ports. The one or more port communication rules causes the software layer to selectively allow or restrict retransmission of incoming messages, where the incoming messages are received at the first set of communication ports or the second set of communication ports.