General
Dimensions (with ears)	90 x 100 x 22 mm
Overcurrent protection

The TCF-142 from Moxa is an industrial serial-to-fiber optic converter that enables signal transmission over long distances using fiber optics. It is designed for use in industrial environments, particularly for applications requiring reliable communication over point-to-point connections or in fiber optic ring networks. The galvanic isolation protects against electromagnetic interference, corrosion, and voltage differences, enhancing the stability of data transmission in demanding environments. The converters support both multimode and singlemode fiber optics, with ranges up to 5 km (multimode) or up to 40 km (singlemode) depending on the model.

Applications

The TCF-142 is suitable for industrial applications requiring robust and interference-resistant data transmission over long distances. These include, for example, automation systems in manufacturing, building automation, power supply, or transportation technology. Support for ring topologies enables redundant networks that continue to function in case of a connection failure. Models with extended temperature tolerance (Wide Temp.) are suitable for operating conditions from -40 °C to 75 °C, making them usable for outdoor installations or sites with extreme climatic conditions.

Functions and Equipment in Detail

The converter supports serial interfaces RS-232, RS-422, and RS-485, with only one interface being active at a time. Baud rates can be automatically detected and range from 50 bps to 921.6 kbps. For RS-485, a hardware-based data direction control (ADDC) is integrated, simplifying setup, especially with varying transmission speeds. Configuration is done via DIP switches, which also allow termination with 120 Ohm or 120 kOhm. Latency is 300 ns, which is acceptable for time-critical applications.

Technology Explained Simply

The optical interface of the TCF-142-M-ST operates in multimode mode with a wavelength of 850 nm and a link budget of 15 dB, enabling a range of up to 5 km. Power supply is via a terminal block with a voltage of 12 to 48 VDC. The converter features reverse polarity protection and overcurrent protection to prevent damage from incorrect wiring or current surges. The housing is made of metal and offers an IP30 protection rating, protecting against mechanical impacts and light splashing water. Mounting is done on a wall using integrated mounting ears.

Compatibility and Accessories

The TCF-142 is designed for use with multimode fiber optic cables. The converters are intended for use in point-to-point connections or ring networks. Compatibility with other devices depends on the serial interface used (RS-232/422/485) and the baud rate. Configuration is done via DIP switches, so no additional software tools are required. Standard fiber optic cables can be used, provided the wavelength and link budget match.

Mounting and Installation

Mounting is done on a wall using the integrated mounting ears. Electrical connections are made via a 7-pin terminal block for the serial interface and a separate terminal block for power supply. Interface configuration, baud rate, and termination are set via DIP switches on the top of the device. Installation does not require special tools, but proper wiring and cable routing are necessary to avoid interference.

Operational Advantages

The TCF-142 offers high operational reliability through galvanic isolation and integrated protection functions. Automatic baud rate detection and hardware-based ADDC for RS-485 reduce setup time. The high MTBF of 780,480 hours (Telcordia standard) indicates a long service life. Support for ring topologies increases network security. Models with extended temperature tolerance allow use in climatically demanding environments.

Scope of Delivery

The scope of delivery includes the TCF-142 converter, a rubber stand foot, a quick start guide, and a warranty card. The quick start guide supports setup and configuration of the device.