Siemens 6GK1970–5CA20–0AA2 Instructions De Montage page 337

6ZB5530–3AC30–0BA1
Slave
PROFIBUS
master network segment
Master
Master
Optical isolation between the transmission links.
Slave
PROFIBUS
slave network segment 2
Slave
Figure 3: Cascading Two PROFIBUS ILM Transmission Links
Infrared
transmission link 1
0.5 to 15 m
ILM
Infrared
transmission link 2
0.5 to 15 m
ILM
13
Infrared Link Modul (ILM)
ILM
PROFIBUS
slave network segment 1
ILM
Copyright  by Siemens
Slave
Slave
Slave