Invensys Triconex 4352B Communication Module

TRICONEX 4352B Tricon Communication Module (TCM) — Fiber + Copper Ethernet

The TRICONEX 4352B is a Tricon Communication Module (TCM) that provides high-speed Ethernet and serial communication for Triconex Tricon safety systems. Featuring dual copper RJ-45 Ethernet ports (10/100 Mbps) and dual fiber-optic Ethernet ports (MT-RJ, 100 Mbps), it enables redundant network connectivity with automatic failover. The 4352B supports multiple industrial protocols including Modbus TCP/IP, Ethernet/IP, SNTP, and Triconex peer-to-peer communication.

• Type: Tricon Communication Module (TCM) — Fiber Type
• Copper Ethernet: 2× 10/100 Mbps RJ-45 ports
• Fiber Ethernet: 2× 100 Mbps MT-RJ ports (multi-mode fiber, 62.5/125 µm)
• Serial Ports: 4× RS-232/RS-485 (DB-9), TriStation-configurable for Modbus master/slave, Trimble GPS, TriStation
• Debug Port: 1× RS-232 (for Triconex use only)
• Port Isolation: 500 VDC
• Protocols: TriStation, Modbus TCP/IP (Master/Slave), Modbus RTU, SNTP, UDP/IP, ICMP, TSAA (IP Multicast), Triconex Peer-to-Peer (UDP/IP and DLC), Triconex Time Synchronization, Trimble GPS, Jet Direct (network printing)
• Redundancy: Dual redundant Ethernet and serial channels with automatic failover
• Input Voltage: 18–32 VDC (±10%)
• Power Consumption: Up to 15 W (typical 12 W)
• Operating Temperature: -40°C to +70°C
• Humidity: 5%–95% non-condensing
• SIL Certification: SIL 3 (IEC 61508)
• Compatibility: Tricon CX, EX, and legacy Tricon systems
• Maximum Peer-to-Peer Nodes: Up to 31 nodes

Installation Guide

1. Install the 4352B into a communication slot in the Tricon chassis.
2. Connect primary and backup Ethernet cables to RJ-45 ports NET 1 and NET 2.
3. For fiber connectivity, insert multi-mode fiber cables with MT-RJ connectors into the fiber ports.
4. Configure IP addresses, subnet masks, and protocol settings in TriStation 1131.
5. Enable redundant path monitoring. The 4352B automatically switches to the backup port if the primary fails.
6. Verify link status via front-panel LEDs: LINK, ACT, PASS, FAULT.

FAQ

Q: What is the difference between 4351B, 4352B, and 4353?
A: The 4351B has copper Ethernet only (2× RJ45, 10/100 Mbps). The 4352B adds dual fiber Ethernet (MT-RJ, 100 Mbps) for environments with high EMI. The 4353 is copper-only but supports 100 Mbps fixed on NET 2 and includes an embedded OPC server. The 4354 adds enhanced OPC features. Note: 4351A/B/4352A/B cannot be mixed with 4351/4352 in the same logical slot or system.

Q: Can I use single-mode fiber with the 4352B?
A: No. The 4352B uses multi-mode fiber with MT-RJ connectors. For single-mode fiber applications, use media converters or select a different communication strategy.

Q: Does the 4352B support Modbus TCP/IP as both client and server?
A: Yes. The 4352B supports Modbus TCP/IP Master and Slave modes, as well as Modbus RTU over serial ports.

Selection Tips

• Choose 4352B when you need both copper and fiber Ethernet for maximum network flexibility and EMI immunity.
• For pure copper Ethernet installations, the 4351B or 4353 are more cost-effective.
• Verify your network infrastructure supports MT-RJ fiber connectors before ordering.
• For OPC UA/DA server functionality, upgrade to the 4353 or 4354 TCM models.
• Important: Do not mix 4352B with 4352 (non-B) in the same system — firmware incompatibility will cause communication failures.