Description
TRICONEX 4351A — Communication Module (TCM)
Product Overview
The Triconex 4351A is a Communication Module (TCM) used within the Triconex Safety Instrumented System (SIS). Its main function is to provide the communication interface between the Triconex controller and other devices—such as remote I/O modules, Ethernet switches, and Human-Machine Interfaces (HMIs)—for process data and safety-critical information.
TRICONEX 4351B
Key Parameters
| Parameter | Value |
|---|---|
| Module Type | Tricon Communication Module (TCM) |
| Serial Ports | 4, RS-232/RS-485, DB-9 connectors |
| Network (Ethernet) Ports | 2, 10/100BaseT, RJ-45 connectors |
| Port Isolation | 500 VDC |
| Ethernet Speed (Copper) | 10/100 Mbps |
| Serial Speed | Up to 115.2 kbps per port |
| Supported Protocols | Modbus, Ethernet/IP, PROFINET ; TriStation, TCP/IP, ICMP, SNTP, TSAA |
| Standards | IEC 61508, SIL 3 |
| Part Numbers | 4351A (7400209-010, 9674-810 in some listings) |
Main Features
- Redundant / Fault-tolerant design: Ensures high communication reliability and availability.
- Hot-swappable: Supports hot swapping for easy maintenance.
- Multi-protocol support: Supports Modbus, Ethernet/IP, PROFINET, as well as TSAA, TriStation, TCP/IP, ICMP, SNTP and more.
- Advanced diagnostics: Built-in diagnostics with status indicators (PASS, FAULT, ACTIVE, FIRM, LINK-1, TX, RX).
- SIL 3 safety rating: Compliant with IEC 61508 and SIL 3 standards for safety-critical applications.
- Triple Modular Redundancy (TMR): Employs TMR technology for maximum reliability and safety.
TRICONEX 4351B
Applications
The 4351A is widely applied in safety-critical industrial process control sectors including:
- Oil, chemical and power industries
- Petroleum, electric power, chemical and manufacturing
- CNC machinery, papermaking, textile, electronics manufacturing
In system architecture, it connects to the Tricon Communication Module ports on the Ethernet network using the TSAA protocol for communication with the Tricon controller. For redundant TCMI (Triconex Communication Interface Module) configurations, a matched pair—one 4351A and one 4351B—is required, and both must reside in a single logical slot.
Companion Components / Related Models
Within the Triconex communication module family, related models include:
| Model | Role/Family |
|---|---|
| 4351B | TCM communication module (pair with 4351A) |
| 4352A / 4352AN | Communication module |
| 4353 / 4354 | Communication module (with OPC) |
| 4355X | Enhanced communication/control TCM |
| 4329G | Network Communication Module (NCM) |
| 4409 | Enhanced main processor security system |
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