Siemens SIMATIC NET PROFIBUS - Manual (Page 238)

Active Components for Wireless Networks
9-2
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
9.1 Infrared Link Module ILM
Uses
The Infrared Link Module ILM is used for wireless PROFIBUS transmission over
short distances (
≤
15m ). With the ILM, individual nodes can be attached to a
segment or two segments can be interconnected. The ILM allows communication
between moving nodes, for example automatic trolleys or with changing nodes, for
example stations along conveyor belts or production lines.
The ILM can be used in the installation of communication systems and in
temporary configurations, for example for test purposes.
The ILM can be used to replace systems subject to wear and tear, for example slip
rings etc.
At a distance of 11 m, an ILM illuminates a circular area with a diameter of 4 m.
Design
S
Robust aluminum die-cast casing with degree of protection IP 65
S
2 x 2-pin terminal block in the casing (with cable connection through heavy-duty
threaded conduit) for attachment to PROFIBUS segment
S
4-pin terminal block in the casing (with cable connection through heavy-duty
threaded conduit) for connection of the power supply (24 V DC) and signaling
contact
S
Permanent wiring; in other words, fast and simple replacement of the
electronics if a fault occurs
S
Status displays of the operating states via LEDs
S
Transmission rate set with switch inside casing
S
Protected from interfering ambient light by integrated daylight filter
S
Easy alignment due to area of radiated cone (
±
10
°
solid angle).