Product News

MOXA TCF-142 Series RS-232/422/485 to fiber converters TCF-142-S-ST

News July 26, 2021


RS-232/422/485 to single-mode optical fiber media converter with fiber ring support and ST connector, -40 to 75°C operating temperature

Features and Benefits

  •  Ring and point-to-point transmission

  •  Extends RS-232/422/485 transmission up to 40 km with single-mode (TCF-142-S) or 5 km with multi-mode (TCF-142-M)

  •  Decreases signal interference

  •  Protects against electrical interference and chemical corrosion

  •  Supports baudrates up to 921.6 kbps

  •  Wide-temperature models available for -40 to 75°C environments


The TCF-142 media converters are equipped with a multiple interface circuit that can handle RS-232 or RS-422/485 serial interfaces and multi-mode or single-mode fiber. TCF-142 converters are used to extend serial transmission up to 5 km (TCF-142-M with multi-mode fiber) or up to 40 km (TCF-142-S with single-mode fiber). The TCF-142 converters can be configured to convert either RS-232 signals, or RS-422/485 signals, but not both at the same time.

Automatic Baudrate Detection

The TCF-142 converters can automatically detect the serial baudrate, which is an extremely convenient feature. Even if a device’s baudrate is changed, the signal will still be transmitted through the media converter without any data loss.

Ring Operation

The TCF-142 converters can be used to connect serial devices to a fiber ring. To form the ring, connect the Tx port of one TCF-142 to the Rx port of a neighboring converter. Once the ring is set up, simply use the DIP switches to configure the TCF-142 converters for ring mode. When one node transmits a signal, the signal travels around the ring until it returns back to the transmitting unit, which then blocks the signal. With the TCF-142, you can set up fiber rings that have a total circumference of up to 100 km.

Automatic Data Direction Control (ADDC®)

ADDC® is a patented hardware data flow solution developed by Moxa to handle RS-485 data direction control. ADDC® senses and controls RS-485 data direction automatically, making it unnecessary to use the handshaking signal.

Ordering Information

TCF-142-M-ST  0 to 60°C Multi-mode ST

TCF-142-M-SC  0 to 60°C Multi-mode SC

TCF-142-S-ST  0 to 60°C Single-mode ST

TCF-142-S-SC  0 to 60°C Single-mode SC

TCF-142-M-ST-T -40 to 75°C Multi-mode ST

TCF-142-M-SC-T -40 to 75°C Multi-mode SC

TCF-142-S-ST-T -40 to 75°C Single-mode ST

TCF-142-S-SC-T -40 to 75°C Single-mode SC

Accessories (sold separately)

DIN-Rail Mounting Kits

DK35A DIN-rail mounting kit, 35 mm

Power Adapters

PWR-12125-USJP-S1  Non-locking barrel plug, 12 VDC, 1.25 A, 100 to 240 VAC, United States/Japan (US/JP) plug, 0 to 40°C operating temperature

PWR-12150-AU-S2  Non-locking barrel plug, 12 VDC, 1.5 A, 100 to 240 VAC, Australia (AU) plug, 0 to 40°C operating temperature

PWR-12150-EU-S2  Non-locking barrel plug, 12 VDC, 1.5 A, 100 to 240 VAC, Continental Europe (EU) Plug, 0 to 40°C operating temperature

PWR-12150-UK-S2  Non-locking barrel plug, 12 VDC, 1.5 A, 100 to 240 VAC, United Kingdom (UK) plug, 0 to 40°C operating temperature

PWR-12150-CN-S1  Non-locking barrel plug, 12 VDC, 1.5 A, 100 to 240 VAC, China (CN) plug, 0 to 40°C

Power Cords

CBL-PJTB-10 Non-locking barrel plug to bare-wire cable

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