Description
The TRICONEX 4119A is an Enhanced Intelligent Communication Module (EICM) designed for Tricon safety control systems. It provides communication between the Tricon controller and external devices including Modbus masters/slaves, TriStation 1131, and compatible printers.
The module provides four configurable serial ports supporting RS-232, RS-422, or RS-485 communication. It can be used for point-to-point Modbus connections or RS-485 networks with multiple Modbus devices, making it suitable for integrating legacy field equipment with a Tricon safety system.
🔧 Main Function
The 4119A acts as a communication interface rather than a conventional digital or analog I/O module. Each serial port can operate concurrently, while the isolated parallel port provides a Centronics-type interface.
For Modbus applications, RS-232 can be configured for point-to-point communication, while RS-485 can support a master and multiple slave devices. The supported Modbus functions include coil status, input status, holding registers, input registers, register modification, diagnostics, and multiple-coil operations.
🏭 Typical Applications
• Safety Instrumented Systems (SIS)
• Emergency Shutdown Systems (ESD)
• Oil and gas facilities
• Petrochemical plants
• Chemical process control
• Power generation
• Burner management systems
• Legacy Modbus integration
• Tricon safety controller communication
📋 Product Datasheet
| Parameter | Specification |
|---|---|
| Manufacturer | TRICONEX / Invensys |
| Model | 4119A |
| Product Type | Enhanced Intelligent Communication Module |
| Module Abbreviation | EICM |
| Serial Ports | 4 |
| Serial Interfaces | RS-232 / RS-422 / RS-485 |
| Parallel Port | 1 × Centronics, isolated |
| Port Isolation | 500 VDC |
| Protocols | TriStation, Modbus |
| Communication Speed | 1200 / 2400 / 9600 / 19,200 Baud |
| Aggregate Serial Data Rate | 57.6 Kbaud |
| Modbus Modes | RTU / ASCII |
| RS-485 Network Length | Up to 1,200 m |
| RS-485 Device Capacity | Up to 32 slaves per network |
| Diagnostic Indicators | PASS / FAULT / ACTIVE / TX / RX |
| Weight | Approx. 3.15 kg* |
| Country of Origin | USA* |
| Application | Tricon Safety Control System |
*Weight and country-of-origin information can vary by packaging and manufacturing revision. The published Tricon system documentation confirms the 4119A communication interfaces, isolation, protocols, communication speeds, and supported Modbus functions.
⚡ Key Features
• Four configurable serial communication ports
• RS-232, RS-422, and RS-485 support
• 500 VDC port isolation
• Modbus RTU and ASCII support
• TriStation communication support
• One isolated Centronics parallel port
• Individual communication status indication
• Designed for Tricon safety-system architecture
🔌 Communication Configuration
A typical RS-232 configuration provides point-to-point communication between the Tricon system and a single Modbus device.
For larger networks, RS-485 can be used for a Modbus master with multiple slave devices. The documented RS-485 trunk length can reach up to 4,000 ft (1,200 m), depending on network installation and cabling conditions.
Typical setup sequence:
• Install the 4119A in the designated Tricon communication slot
• Connect the required serial interface
• Select RS-232, RS-422, or RS-485 according to the application
• Configure baud rate and communication parameters
• Assign Modbus aliases as required
• Configure the external Modbus devices
• Check TX/RX activity indicators
• Verify communication diagnostics
🛠️ Installation Notes
Before installation, verify the complete identification TRICONEX 4119A, system version, chassis configuration, serial interface type, and existing communication architecture.
Check the communication cable type, termination, grounding, and serial parameters before energizing the system. For RS-485 networks, correct termination and network topology are particularly important.
⚙️ Commissioning Checklist
• Verify 4119A module identification
• Confirm Tricon system compatibility
• Check module installation position
• Select correct serial interface
• Verify baud rate
• Confirm Modbus address/alias configuration
• Check RS-485 termination
• Test TX/RX activity
• Verify Modbus data exchange
• Check PASS / FAULT / ACTIVE indicators
⚠️ Compatibility Notice
The TRICONEX 4119A is an Enhanced Intelligent Communication Module for Tricon safety systems. It should not be substituted with a standard PLC communication card simply because the external communication protocol is the same.
The 4119A is documented for Tricon v9–v10 systems and is listed as an EICM communication module alongside other Tricon communication hardware.
📦 Product Identification
Brand: TRICONEX
Model: 4119A
Product Type: Enhanced Intelligent Communication Module
Function: Serial Communication / Modbus Interface
Serial Interfaces: RS-232 / RS-422 / RS-485
Protocol: Modbus / TriStation
Application: Safety Instrumented System
System: Tricon Safety Controller
