Overview

The MOXA TCF-142-S-SC Fiber Optic Converter enables secure, long-distance serial communication by converting RS-232/422/485 signals into single-mode fiber. Designed for electrically noisy or distributed environments, it provides complete immunity to EMI/RFI interference and supports fiber ring redundancy for high-availability networks.
With MOXA’s ADDC® automatic data direction control for RS-485, installation is simplified and configuration requirements are reduced. Its rugged design, wide temperature options, and reliable optical transmission make it a trusted choice for system integrators working on industrial automation, SCADA, transportation, and energy systems.

Technical Specifications

Application

The TCF-142-S-SC is widely used in environments where serial devices must communicate reliably over long distances or where electrical noise prevents stable copper-based communication. Typical applications include:

• Factory Automation – Extends serial links between PLCs, sensors, and distributed I/O across large production areas.

• Transportation Systems – Provides robust communication for signaling, diagnostics, and wayside monitoring equipment.

• Energy & Utilities – Connects SCADA and DCS components within substations, switchyards, and remote plants.

• Oil & Gas – Ensures secure, interference-free transmission in hazardous and EMI-intensive zones.

• Smart Infrastructure – Supports fiber ring redundancy for high-availability communication loops.

Engineers often select this converter for SCADA environments, where long-distance fiber connections eliminate interference and improve communication reliability between remote stations.

FAQ

Q1: What serial interfaces are supported?
A: RS-232, RS-422, and RS-485 (2-wire or 4-wire).

Q2: What is the maximum transmission distance?
A: Up to 40 km via single-mode fiber with SC connectors.

Q3: Does fiber protect against interference?
A: Yes—fiber optics are immune to EMI and RFI, ensuring stable communication.

Q4: Is there a wide-temperature model?
A: Yes—the -T version supports -40°C to +75°C.

Q5: Which industries commonly use this device?
A: Automation, transportation, energy, utilities, and oil & gas.