Model Explanation

51400997-100: Honeywell part number (no delimiter 51400997100)

51400997 = PLCI (PLC Gateway Interface) Gateway Card Series

100 = Standard version, Rev A firmware, LCN standard compatibility

Component Type: PLCI PWA (PLC Gateway Interface Printed Wiring Assembly)

Compatibility System: TDC 3000, TPS, Experion PKS (LCN compatible)

Alternative Model: 51400997-200 (EPLCI Enhanced Version) Technical Specifications

Processor: Special 16-bit communication processor, with a main frequency of 20 MHz

Memory: 128 KB RAM (data cache), 64 KB EPROM (firmware)

Communication interface: 2 independent RS-232/422/485 serial ports (Port1/Port2)

Baud rate: 300 bps ~ 19.2 kbps (jumper configuration)

Protocol support: Modbus RTU, Siemens 3964R, Allen-Bradley DF1, etc.

Power supply: 5 VDC (backplane, ±5%), power consumption ≤ 18 W

Operating temperature: 0°C ~ +60°C (industrial grade)

Storage temperature: -40°C ~ +85°C

Humidity: 5% ~ 95% RH (no condensation)

Size: Standard 19-inch card (3U), 5-slot module

Weight: Approximately 1.1 kg

Certifications: CE, UL, CSA, FM

Interface and Configuration

Backplane interface: LCN cabinet gold fingers, dedicated LCN control bus

Serial port terminals: Port1 (DB9), Port2 (DB9), supports RS-232/422/485

Status indicators: PWR, LCN ACT, PORT1 ACT, PORT2 ACT, FAULT LED

Configuration method: On-board jumpers (baud rate, parity check) + HG software configuration

Redundancy: Supports 1:1 hot redundancy configuration (dual PLCI seamless switching)

Compatibility: Compatible with TDC 3000 LCN full version, compatible with HMPU, HG cards Core function

Protocol Conversion and Data Routing: Achieve mutual conversion between LCN network protocol and PLC serial port protocol. Support DCS reading and writing of PLC registers and coils, and real-time bidirectional data synchronization (delay ≤ 100 ms).

Parallel Communication for Multiple PLCs: Dual serial ports are independently configured, capable of simultaneously connecting 2 different brands of PLCs. Support mixed communication of multiple protocols, without the need for additional gateway devices.

Data Caching and Point Breakpoint Continuation Transmission: 128 KB high-speed cache. Caches data during network interruption, and automatically resumes transmission upon recovery, ensuring data integrity.

System Diagnosis and Alarm: Real-time monitoring of communication status, serial port errors, and LCN network failures. Triggers DCS alarm and records logs when abnormalities occur.

HG Software Integration: Runs based on Hiway Gateway (HG) software, does not require modification of the system kernel, and is compatible with the existing LCN network architecture. Applicable scenarios

System: Honeywell TDC 3000, TPS, Experion PKS (LCN compatible)

Equipment: LCN cabinet, 5-slot equipment module, third-party PLC (Siemens S7, AB CompactLogix, etc.)

Industry: Petrochemicals, thermal power, metallurgy, cement, pharmaceuticals, papermaking

Application: DCS and PLC system integration, old system upgrade, multi-vendor equipment integration, remote equipment monitoring, data acquisition and control