Model Explanation

51400997-200: Honeywell part number (written as 51400997200)

51400997 = PLCI/EPLCI Gateway Card Series

200 = Enhanced version (EPLCI), high baud rate, extended protocol, large cache

Component Type: EPLCI PWA (Enhanced PLC Gateway Interface Printed Circuit Board Component)

Compatible Systems: TDC 3000, TPS, Experion PKS (LCN Network)

Replacement/Upgrade: Direct replacement of 51400997-100 (standard PLCI) Technical Specifications

Processor: 16-bit enhanced communication processor, with a main frequency of 25 MHz

Memory: 256 KB RAM (data cache), 128 KB EPROM (firmware)

Communication interface: 2 independent high-speed RS-232/422/485 serial ports (Port1/Port2, DB9)

Baud rate: 300 bps ~ 115.2 kbps (maximum 19.2 kbps for standard PLCI)

Protocol support: Modbus RTU/ASCII, Siemens 3964R/RK512, AB DF1, Omron FINS, etc.

Power supply: 5 VDC (backplane, ±5%), power consumption ≤ 22 W

Operating temperature: 0°C ~ +60°C

Storage temperature: -40°C ~ +85°C

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

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

Weight: Approximately 1.2 kg

Certifications: CE, UL, CSA, FM

Interface and Configuration

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

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

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

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

Redundancy: Supports 1:1 hot redundancy, seamless fault switching

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

High-speed protocol conversion: Conversion between LCN and PLC serial protocols, with a maximum baud rate of 115.2 kbps, bidirectional delay ≤ 50 ms (standard PLCI ≤ 100 ms)

Multiple PLC parallel connection: Dual serial ports independently configured, capable of simultaneously connecting 2 PLCs of different brands, supporting mixed communication of multiple protocols

Large data caching and breakpoint resume transmission: 256 KB cache, cached data during network interruption, automatic resume transmission upon recovery, ensuring data integrity

Extended protocol support: In addition to standard PLCI, includes Omron FINS, AB DF1 full-function, Modbus ASCII, etc., suitable for more third-party PLCs

Advanced diagnosis and alarm: Real-time monitoring of communication errors, serial port level, LCN network load, DCS alarms + log recording, supports remote diagnosis

HG software deep integration: Compatible with existing HG architecture, no need to modify the system kernel, supports online configuration and firmware upgrade Applicable scenarios

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

Equipment: LCN cabinet with 5 slots, Siemens S7-1200/1500, AB CompactLogix/ControlLogix, Omron NJ/NX and other mid-to-high-end PLCs

Industry: Large-scale petrochemicals, thermal power, nuclear power, metallurgy, cement

Application: High-speed integration of DCS and PLC, upgrading of old systems (replacing standard PLCI), integration of multiple vendor equipment, real-time monitoring of large data volume, redundant communication for critical circuits