Serial Converter Moxa TCF-142-M-ST

Name: Serial Converter Repeater Isolator Moxa TCF-142-M-ST
Brand: MOXA
SKU: 3298762
Price: 137.49 EUR
Availability: OutOfStock

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Serial Converter Repeater Isolator Moxa TCF-142-M-ST

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Short description

The Moxa TCF-142-M-ST is a versatile serial converter/repeater/isolator for RS-232/422/485 applications. It features compact dimensions of 67 x 100 x 22 mm and operates on an input voltage of 12 - 48 V with a power consumption of 140 mA. Certified with EN, FCC, and safety standards UL/CUL, TUV, this device ensures reliable data transmission over fiber optics, making it ideal for industrial environments.

Warranty: 2 Years

SKU: 3298762

Manufacturer: MOXA

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Product information

Description

The Moxa TCF-142-M-ST is a compact serial converter/repeater/isolator that converts RS-232 or RS-422/485 serial interfaces to optical fiber. Designed for industrial serial links, the TCF-142-M-ST supports multi-mode fiber connections and extends serial transmission distances up to 5 km. It accepts 12–48 V input power, has a small footprint (67 x 100 x 22 mm), and is certified to EN, FCC and UL/CUL/TUV safety standards for reliable operation in electrically noisy environments.

Advantages

The device offers automatic baudrate detection to maintain data flow even if the connected device’s baudrate changes. It supports both point-to-point and ring topologies, with ring operation allowing fiber rings up to 100 km in circumference. The TCF-142-M-ST includes Moxa’s patented Automatic Data Direction Control (ADDC®) for RS-485, eliminating the need for manual handshaking for direction control. Its compact size and isolation reduce electrical interference and chemical corrosion risks, and wide-temperature models are available for harsh environments.

Suitable for

Extending RS-232/422/485 serial links over multi-mode fiber up to 5 km
Industrial environments with electrical noise where galvanic isolation is required
Point-to-point or fiber ring serial networks
Applications requiring automatic baudrate detection and automatic RS-485 direction control

Key specifications

Serial interfaces supported: RS-232 or RS-422/485 (selectable, not simultaneous)
Fiber type: multi-mode (TCF-142-M), ST connector
Maximum distance: up to 5 km (multi-mode)
Baudrate range: 50 bps to 921.6 kbps
Power input: 12–48 VDC, typical current 140 mA
Dimensions: 67 x 100 x 22 mm
Certifications: EN, FCC, UL/CUL, TUV
Operating temperature: standard and wide-temperature models (wide: -40 to 75 °C)

How to use

Mount the converter in a suitable location and connect the power supply within the specified 12–48 VDC range. Select the required serial interface mode (RS-232 or RS-422/485) using the device switches; the unit cannot convert both simultaneously. Connect the multi-mode fiber using the ST connector to the Tx/Rx ports. For ring operation, link the Tx of one unit to the Rx of the neighboring unit and set each converter to "ring mode" via DIP switches. The unit will automatically detect the serial baudrate and, for RS-485 lines, manage data direction using ADDC®.

Usage recommendations

For reliable operation, use quality multi-mode fiber and proper ST connectors, ensure power supply within the 12–48 V range, and configure DIP switches according to whether you need point-to-point or ring topology. Choose a wide-temperature model if deploying in extreme temperature conditions.

Specifications

Fiber optic connector:: ST

All features

Host interface:: RS-232/422/485
Power consumption:: 140 mA
Over current protection:: Yes
Output interface:: Fiber (ST)
RS-232 signals:: Tx, Rx, GND
Surge protection voltage:: 2 kV
Electrostatic Discharge (ESD) protection:: 15 kV
Baud rate:: 921.6 Kbit/s
Transmission distance (multi-mode):: 5 km
RS-422 signals:: TxD-, TxD+, SGND, RxD-, RxD+
RS-485 signals:: TxD-, TxD+, SGND, RxD-, RxD+, Data-, Data+
RX sensitivity:: -20 dB
TX output:: -5 dB

Ports & interfaces

Fiber optic connector:: ST

Performance

Wavelength:: 850 nm

Other features

Dimensions (WxDxH):: 67 x 100 x 22

Power

Input voltage:: 12 - 48

Certificates

Certification:: EN, FCC
Safety:: UL/CUL, TUV

Operational conditions

Operating relative humidity (H-H):: 5 - 95
Storage temperature (T-T):: -40 - 85
Operating temperature (T-T):: 0 - 60

Features

LED indicators:: Y

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Instructions

mmo_5999657_1624788126_2559_55060.pdf

moxa-TCF-142-M-ST-3298762.pdf

Description

Instructions

mmo_5999657_1624788126_2559_55060.pdf

moxa-TCF-142-M-ST-3298762.pdf

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Customer questions

FAQ

What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All MOXA products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized MOXA service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: fiber optic connector, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

Where can I download the instructions for Serial Converter Moxa TCF-142-M-ST?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

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