Moxa TCF-142-S-ST-T Serial-to-Fiber Converter

Technical Overview

Converts RS-232/422/485 to single-mode fiber, extending links up to 40 km. Features auto baudrate and ADDC. Operates from -40 to 75°C.

Key Features

Converts RS-232/422/485 serial signals to single-mode optical fiber.
Extends serial transmission distance up to 40 km over single-mode fiber.
Wide operating temperature range from -40 to 75°C for harsh environments.
Automatic Baudrate Detection (50 bps to 921.6 kbps) simplifies setup.
Supports fiber ring operation with a total circumference up to 100 km.
Features Automatic Data Direction Control (ADDC®) for RS-485.
Provides protection against electrical interference and chemical corrosion.
IP30 rated metal housing ensures durability in industrial settings.

Technical Specification Matrix

Parameter	Value
Serial Standards	RS-232, RS-422, RS-485
Fiber Type	Single-mode
Fiber Connector	ST connector
Transmission Distance (Single-mode)	40 km
Baudrate	50 bps to 921.6 kbps
Input Voltage	12 to 48 VDC
Input Current	70 to 140 mA @ 12 to 48 VDC
Operating Temperature	-40 to 75°C (-40 to 167°F)
Storage Temperature	-40 to 85°C (-40 to 185°F)
IP Rating	IP30
Housing	Metal
Installation	Wall mounting
Latency	300 ns
Physical Weight (kg)	0.32
Dimensions L x W x H (cm)	10 x 6.7 x 2.2

Industrial Applications

1. Remote Industrial Process Monitoring

Extending RS-232/422/485 communication from industrial sensors and control devices in large facilities (e.g., chemical plants, oil and gas pipelines) to a distant central control room.

Problem Solved

The product's 40 km single-mode fiber extension capability overcomes the inherent distance limitations of serial cables, while its -40 to 75°C operating temperature and immunity to electrical interference ensure reliable data transmission in harsh, electromagnetically noisy industrial environments.

SCADAPLCRTULong-distance communicationEMI/RFI immunityTemperature resilienceRS-232/422/485

2. Railway & Metro System Communication

Establishing a robust and interference-free communication backbone for signaling, control, and data acquisition systems along extensive railway tracks or within metro tunnels.

Problem Solved

Fiber optic communication provides critical immunity from the significant electrical noise and interference generated by trains and power lines, maintaining data integrity over 40 km distances. The wide -40 to 75°C operating temperature supports outdoor and varied tunnel conditions, and ring topology offers redundancy for critical infrastructure.

Railway signalingTrain controlSCADAFiber optic backboneEMI immunityVibration resistanceRing networkSingle-mode fiber

3. Wind Turbine Farm Data Collection

Collecting operational data from multiple wind turbines spread across a vast area and transmitting it reliably to a central monitoring station.

Problem Solved

The fiber optic conversion protects sensitive equipment from lightning strikes, ground loops, and electrical surges common in exposed wind farms. Its 40 km transmission range accommodates the large geographical spread of turbines, and the -40 to 75°C operating temperature ensures consistent performance in diverse weather conditions.

Renewable energySCADARemote monitoringLightning protectionGround loop isolationSerial data acquisitionExtreme temperatureSingle-mode fiber