The TRICONEX 4211 is a redundantly designed module primarily used to expand the I/O capabilities of Tricon safety controllers, enabling reliable connection and control of remote devices. It adopts a Triple Modular Redundancy (TMR) architecture, ensuring continuous operation even if a single channel fails, thereby delivering high reliability and fault tolerance. Additionally, the module supports multiple communication protocols (such as Modbus TCP/IP, Tricon I/O Bus, etc.) and is compatible with various industrial equipment and systems.
The TRICONEX 4211 module consists of the following key components:
The TRICONEX 4211 is widely used in:

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(PLC)Programmable Logic Controller
GE :IS210AEPSG2B,IS220UCSAH1A,IS215ACLEH1A,IS210AEAA
Allen-Bradley:1734-IB8 1734-OB8 1769-L18ER-BB1B 1756-IM16I
ICS Triplex : T8461,T8850,T8403,T8431,T8831,T8310
Schneider : 140DDI85300,140CPS11420,140CPU67060
Prosoft : MVI46-DFNT,MVI69-DFNT,MVI56-PDPMV1
Bachmann : MPC240/270(CPU),DI232,CM202,NT255AIO288
Woodhead : 9905-068 2301A,SSTESR2CLXRLL
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TRICONEX is a global leader in Safety Instrumented Systems (SIS), delivering mission-critical solutions for high-risk industries including oil & gas, refining, petrochemicals, and power generation. The company’s product portfolio features TÜV Rheinland SIL3-certified safety control platforms, such as:
To enable end-to-end safety ecosystems, TRICONEX offers advanced software tools:
A standout innovation is the EcoStruxure™ Triconex Safety System, a core component of the EcoStruxure Plant Architecture, which delivers lifecycle safety management to protect personnel, ensure operational continuity, and maximize asset ROI.