Siemens SIMATIC NET PROFIBUS User Manual
Page 231
Active Components for Optical Networks
8-3
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Functions
S
Attachment of a PROFIBUS RS-485 segment
S
Provides an electrical attachment to the optical PROFIBUS (for example a PG
attachment for commissioning and diagnostics)
S
Supports all PROFIBUS transmission rates from 9.6 kbps to 1.5 Mbps and 12
Mbps
S
The OBT regenerates the signals in amplitude and time.
S
Cascading depth when using user-defined bus parameters up to 126 nodes
S
Isolation of the DP node via fiber-optic cable
S
Simple diagnostics with LEDs for operating voltage and for data reception CH1,
CH2 and CH3.
Ordering Data:
Order no.
PROFIBUS OBT
Optical bus terminal for attachment of a
PROFIBUS RS-485 segment to an optical bus
without simplex connector
6GK1 500-3AA00
Operating Instructions
The full Operating Instructions for Optical Bust Terminal OBT are included in the
Appendix of this manual.