Model Explanation

51401291-100: Honeywell part number (written as 51401291100)

51401291 = LLCN Control Board Series

100 = Standard version, Hardware Rev A, Basic Firmware

Component Type: LLCN Control Board (Low-Level LCN Communication Control Card)

Compatible System: TDC 3000 (LCN Network Node, HPM/UCN Controller)

Alias: Low-Level LCN Board, LCN Physical Interface Card Technical Specifications

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

Memory: 512KB RAM (communication cache), 256KB ROM (firmware)

Communication rate: LCN bus 5Mbps (compatible with standard LCN protocol)

Interface: LCN coaxial interface (BNC), LCN network cable connection

Power supply: 5VDC/±12VDC (backplane), power consumption ≤ 18W

Operating temperature: 0°C ~ +60°C

Storage temperature: -40°C ~ +85°C

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

Size: Standard 19-inch card (6U)

Weight: Approximately 1.2kg

Certifications: CE, UL, CSA, FM

Interface and Configuration

LCN Interface: BNC coaxial interface, connects LCN network cable

Backplane Interface: Gold finger, connects LCN node backplane

Configuration Method: Built-in DIP switches (LCN address, termination resistor, communication mode)

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

Compatibility: Full version LCN network of TDC 3000, compatible with HPK2-2/3 processor card Core function

LCN Physical Layer Control: LCN network signal modulation/demodulation, transmission/reception control, level conversion, ensuring the stability of the network physical link.

Data Link Management: LCN frame encapsulation/deserialization, error checking, retransmission control, communication scheduling, achieving reliable data transmission.

Protocol Conversion: LCN protocol conversion with backplane bus protocol, connecting LCN network and internal processor of the node.

Network Diagnosis and Monitoring: LCN network status monitoring, fault location, alarm reporting, supporting network maintenance.

Redundancy Switching Control: Automatically detects the failure of the main card under redundant configuration, seamlessly switches to the backup card without data loss. Applicable scenarios

System: Honeywell TDC 3000, TPS (LCN network node, HPM/UCN controller)

Equipment: LCN node cabinet, HPK2-2/3 processor card, LCN network cable

Industry: Petrochemicals, thermal power, metallurgy, oil and gas, pharmaceuticals, papermaking

Application: LCN network communication, process data transmission, system network redundancy, network fault diagnosis