Technical data

Active components
4.2 Active components for optical networks
PROFIBUS Network Manual
System Manual, Edition 04/2009, C79000-G8976-C124-03
87
Functions
Automatic detection of all PROFIBUS data rates: 9.6 kbps to 12 Mbps including 45.45 kbps
(PROFIBUS PA)
● Setup of the following network topologies:
Bus, star, redundant ring
● High availability due to media redundancy. Distance between two OLMs in the redundant
ring limited only by the maximum optical distance.
● Attachment to different types of fiberoptic transmission media (one or two optical
interfaces, BFOC connectors)
● Isolated RS485 interface with segment capability (D-sub female connector)
● Unrestricted multi-master operation:
Expanded segmentation functions for localization of faults on fiber-optic and RS-485
segments
● Fast localization of faults:
– Indication of module status by floating signaling contact
– Checking the fiber-optic cable link quality Measurement output for optical receiver for
logging and checking of the fiber optic signal quality with a voltmeter
● High cascading depth:
Line and redundant ring up to 122 OLMs (only limited by monitoring times)
● 24 V DC power supply with redundant power supply option
● Line quality display with multicolor LEDs per optical channel
Note
The optical ports of the OLMs are optimized for greater distances. The direct coupling of
the optical ports of an OLM with an OBT or integrated optical ports is not possible due to
differences in the technical specifications.
Table 4- 8 Ordering data
Ordering data Order no.
PROFIBUS OLM/P11
Optical Link Module with 1 x RS485 and 1 x plastic FO interface, with signaling
contact and measurement output
6GK1 503-2CA00
PROFIBUS OLM/P12
Optical Link Module with 1 x RS485 and 2 x plastic FO interfaces, with
signaling contact and measurement output
6GK1 503-3CA00
PROFIBUS OLM/G11
Optical Link Module with 1 x RS485 and 1 x glass FO interface, for standard
distances, with signaling contact and measurement output
6GK1 503-2CB00
PROFIBUS OLM/G12
Optical Link Module with 1 x RS485 and 2 x glass FO interface, for standard
distances, with signaling contact and measurement output
6GK1 503-3CB00