Model Interpretation

4119A: EICM, 4×Serial (RS‑232/422/485) + 1×Parallel, Isolated, SIL3

P/N: 3000589‑xxx series

Family: 4119 (base) / 4119A (isolated ports, enhanced firmware)

Compatibility: Tricon 8110/8111/8112 chassis; max 2 modules per chassis (one logical slot)

Key Distinction: No Ethernet (vs 4351B with 2×Ethernet)

Technical Parameters

Electrical & Power

Power: 24VDC (backplane, 20.4–28.8VDC)

Isolation: 500VDC per port; 2500Vrms port‑to‑backplane

Redundancy: TMR‑compatible (works with Tricon’s 2oo3 voting)

Communication Interfaces

Serial Ports (4 × DB‑9): RS‑232/RS‑422/RS‑485, 1200–19.2Kbps

Protocols: Modbus RTU/ASCII (Master/Slave), TriStation 1131

RS‑485: 1 master → up to 32 slaves; 1200m max distance

Parallel Port (1 × Centronics): Isolated, for printer output

No Ethernet: No TCP/IP, Modbus TCP, or SNTP support

Mechanical

Form Factor: 3U, 19” rack, 1 slot

Dimensions (W×H×D): 483 × 127 × 305 mm

Weight: ~0.8–1.0 kg

Mounting: Plug‑in backplane, hot‑swappable

Environmental

Operating Temp: 0°C to +60°C

Storage Temp: −40°C to +85°C

Humidity: 5%–95% RH, non‑condensing

Certifications: SIL3 (IEC 61508), TÜV, UL, CE

Diagnostics & Indicators

LEDs: PASS, FAULT, COM1–COM4

Monitoring: Port status, baud rate, Modbus error counters

Protection: ESD, surge, short‑circuit, overtemperature

Core Functions

Serial‑Only SIL3 Communication

4 isolated serial ports for Modbus RTU/ASCII and TriStation; ideal for connecting to serial‑only devices (RTU meters, legacy PLCs, HMIs) without Ethernet.

Isolated Printer Connectivity

1 isolated Centronics port for hardcopy logging/reporting (critical for safety loop audit trails).

Modbus Master/Slave Flexibility

Each serial port configurable as Modbus Master/Slave; up to 7 Modbus Masters per chassis.

TMR Compatibility & Hot‑Swap

Works with Tricon’s TMR safety architecture; online replacement without shutdown.

Applications

Oil & Gas: Serial RTU/flow meters, legacy PLCs, safety valve positioners

Power Generation: Turbine serial governors, boiler serial sensors, printer logging

Chemical/Refining: Modbus RTU analyzers, local HMIs, batch printer reports

Legacy System Integration: Connecting pre‑Ethernet devices to modern Tricon SIS