Yokogawa F3LC31-2F Modbus Communication Module

Overview

The Yokogawa F3LC31-2F is a reliable Modbus communication module for FA-M3 PLCs. It enables seamless connection with external devices using Modbus RTU or ASCII protocols. This module supports both master and slave functions for versatile system integration. It allows Yokogawa systems to communicate with third-party devices in open networks. The design ensures stable performance over long transmission distances in industrial settings.

Technical Specifications

• Model: F3LC31-2F

• Communication Protocols: Modbus RTU / Modbus ASCII

• Interface Standard: EIA RS-422 / RS-485

• Transmission Mode: Half-duplex, 2-wire or 4-wire

• Baud Rates Supported: 300 to 115.2 kbps (selectable)

• Transmission Distance: Up to 1200 meters with shielded twisted-pair cable (AWG20–16)

• Port Configuration: 1 isolated communication port

• Data Format:

• Start bit: 1

• Data length: 7 or 8 bits

• Parity: None / Even / Odd

• Stop bit: 1 or 2

• Error Checking: CRC-16 (RTU), LRC-8 (ASCII)

• Master Function:

• Function types: 10

• Input/Output area: 250 bytes each

• Broadcast supported

• Slave Function:

• Function types: 10

• Device size: 64K points per type

• Station ID: 1–247

• Multi-slave support: up to 8 IDs

• Power Consumption: 290 mA

• External Connections: 6-point terminal block (M3.5 screws)

• Dimensions: 28.9 mm (W) × 100 mm (H) × 83.2 mm (D)

• Weight: 0.3 kg