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Siemens SIMATIC NET PROFIBUS User Manual

Page 231

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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.