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Allen-Bradley 1756-DHRIO ControlLogix Communication Module
Allen-Bradley 1756-DHRIO ControlLogix network interface card supporting Data Highway Plus and Remote I/O legacy networks. Brand new original stock, fully tested with global logistics.
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SKU: CM 3201
Triconex CM 3201 Communication Module
The Triconex CM 3201 is a high-reliability communication module featuring two Ethernet and three serial ports. It provides secure, redundant data exchange between Tricon safety systems and external DCS or host computers in SIL 3 applications.
Mission-Critical Connectivity Overview
The Triconex CM 3201 functions as a high-integrity communication bridge designed specifically for the Tricon Triple Modular Redundant (TMR) safety system. By providing a secure gateway between the system’s Main Processors (MPs) and external networks, this module facilitates the real-time exchange of safety-critical data. The CM 3201 actively supports connections to Distributed Control Systems (DCS), operator workstations, and plant historians without compromising the safety loop’s independence. Because it adheres to the rigorous reliability standards of the Triconex brand, this module remains a cornerstone in Emergency Shutdown (ESD) and Fire and Gas (F&G) applications worldwide.
Detailed Technical Specifications
- Manufacturer: Triconex (Schneider Electric)
- Model Number: CM 3201
- Product Category: Communication Module / PLC Module
- Ethernet Ports: 2 per module (10/100BaseT)
- Serial Interfaces: 3 Ports (Configurable as RS-232 or RS-485)
- System Compatibility: Tricon v9–v10, Trident v2
- Operating Voltage: 24V DC (Internal system power)
- Redundancy Support: Dual-module hot-standby configuration on CM Baseplate
- Dimensions: 4.5 cm x 18.6 cm x 21.7 cm
- Net Weight: 1.5 kg
- Manufacturing Origin: USA
- Compliance: Safety-certified for use in SIL 3 environments
Operational Performance and Redundancy
Plant operators prioritize the Triconex CM 3201 because it offers unparalleled flexibility in network architecture. For example, the module’s dual-Ethernet ports allow for separate control and monitoring paths, which effectively prevents network traffic congestion. Furthermore, the module allows for redundant deployment; by installing two CM 3201 units on a single baseplate, the system gains a secondary communication path that takes over instantly if the primary module encounters a fault. This “non-interfering” design ensures that even a total communication failure cannot prevent the Triconex system from performing its primary safety function.
Key Industrial Applications
- Refining and Petrochemical: Provides high-speed data links for ESD systems to communicate with centralized DCS platforms.
- Power Generation: Manages sequence-of-events (SOE) data transmission for turbine control and protection.
- Oil and Gas Upstream: Enables remote monitoring of wellhead safety systems via robust serial and Ethernet protocols.
- Chemical Processing: Integrates safety-certified logic with external host computers for advanced diagnostic reporting.
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