Moxa Technologies NPort IA5150 series Manual de usuario descargar pdf (Pagina 2)

MOXA White Paper Expand Your Serial COMs with Optical Fiber

Page 2 of 6

Solution 1—The Serial-to-Fiber Converter

TCF-142 serial-to-fiber media converters are designed to

extend the transmission distance of serial devices used as

components of industrial automation networks. Models are

available for both multi-mode (M-models) and single-mode

(S-models) fiber with ST connectors. The optical fiber cables

can be up to 2 km for multi-mode models, and up to 20 km fo

single mode models.

TCF-142 media

converters can be

configured for either Pair

Connection Mode or Ring

Connection Mode.

Users are always happy to learn that MOXA’s TCF-142 media

converters require little if any configuration. Since the media

converter simply transforms the communication signal from

one signal type to another, the TCF-142 does not have a

baudrate to configure. The only task the user must complete

before switching on the device is to configure each TCF-142 fo

a particular serial interface. In addition, you may want to

activate the TCF-142’s termination resistors to protect the

converter from unexpected surges in the serial signal, and

some applications will require setting up the fiber connection

topology. All configuration steps are easy to complete using the

4 DIP switches located on the TCF-142’s casing.

Pair Connection Mode

for

TCF-142 Media

Converters

Pair Connection Mode is used to extend the transmission

distance of a serial connection. For example, two TCF-142

serial-to-fiber converters can be used to connect a computer to

a serial device that is located at a remote site. In this case, the

serial device could be located up to 20 km from the computer

(if single mode fiber is used).

Note that since TCF-142 converters only transmit data signals

over the two optical fiber cables, it is most natural to use the

TCF-142 with 2-wire RS-485 serial devices. However, the

TCF-142 can also be used to transmit RS-232, RS-422, and

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Moxa Technologies NPort IA5150 series Manual de usuario Pagina 2