Siemens SIMATIC NET S7-1200 Compact Operating Instructions

Network topologies
2
2.1 Network topologies
Switching technology allows extensive networks to be set up with numerous nodes and
simpli󹪝es network expansion.
Which topologies can be implemented?
Linear (bus) and star topologies can be implemented with the compact switch module
CSM 1277.
Note
Make sure that the maximum permitted cable lengths for the relevant devices are not exceeded.
You will 󹪝nd the permitted cable lengths in the technical speci󹪝cations.
Bus topology
Figure 2-1 Bus topology with the CSM 1277
Compact Switch Module CSM 1277
Compact Operating Instructions, 06/2022, A2B00079397-02 9

Siemens SIMATIC NET S7-1200 Specifications

General

Supply voltage	24 V DC
Protection class	IP20
Product type designation	S7-1200
Transfer rate	10/100 Mbit/s
Number of ports	4
Power consumption	2.5 W
Operating temperature	0 °C to 60 °C
Mounting type	DIN rail
Switching capacity	1 Gbps