
1. Overview
1.1 Introduction
The LONWORKS Fiber Optic Modem is a multi-master and high performance Field bus
Control System (FCS). Our Fiber Optic Modem uses the fiber cable as its transmission
medium and utilizes Optical Fiber modulation/demodulation technology to changes the
electric medium into a light medium transmission.
The LONWORKS Fiber Optic Modem product eliminates many of the disadvantages of
copper cable. Examples of these disadvantages are EMI/RFI, ground loops (electrical
isolation with fiber), high attenuation (high signal loss), short transmission distance
between nodes of a system, and potential lightning damage.
The LONWORKS Fiber Optic Modem can be widely used, such as Industrial Controls,
Intelligent Transportation Systems (ITS), Industrial Networking, Supervisory Control and
Data (SCADA) and so on
1.2 Technical Specification
CAN BUS
Connectors Terminal
Standard LONWORKS(LonTalk)
Data Rate 78.6Kbps
Extended Distance 0~20Km
OPTICAL
Number of Fibers 4 or 2
Wavelength 850/1310nm
Fiber Type 62.5/125µm(MM), 9/125µm(SM)
Distance 0 ~ 2Km OR 0-20 Km
Connector Type SC/ST/FC
GENERAL
Operating Temperature -30~ 70˚C / -30 ~ +158ºF
Operating Humidity 0 ~ 95% non-condensing
Mean Time Between Failure (MTB) > 70,000hrs
Power Supply Adaptor DC24V
Dimensions (H ×L×W) 125(L)×110(W)×36(H)