Siemens SIMATIC NET PROFIBUS - Manual (Page 469)

10-1
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Abbreviations
DIN Deutsche Industrie Norm (German industrial standard)
ESD Electrostatic discharge
EN European standard
EMC Electromagnetic compatibility
FO Fiber–optic
IEEE Institute of Electrical and Electronic Engineers
ISO/OSI International Standards Organization / Open System
Interconnection
HCS t HCS t is a registered trademark of Ensign–Bickford
Optics Company and stands for
“Hard Polymer Cladded Silica Fiber”.
In these instructions, only the
general term PCF is used.
LAN Local Area Network
LED Light Emitting Diode
OBT Optical Bus Terminal
OLM Optical Link Module
PCF Polymer Cladded Fiber, synonymous with HCS
t
fiber
POF Polymer Optical Fiber; synonymous with plastic FO cable
PROFIBUS DP PROFIBUS Distributed I/Os
SELV Safety extra–low voltage
UL Underwriter Laboratories
VDE Verein Deutscher Elektroingenieure (association of
German electrical and electronics engineers)
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