Csm 1277 - Siemens SIMATIC NET System Manual

Compact switch module

9.2 CSM 1277

9.2 CSM 1277
Description
Figure 9-3
The Compact Switch Module CSM 1277 is an unmanaged switch for connecting a SIMATIC
S7-1200 module to an Industrial Ethernet network in line, tree or star structure. Simple
automation networks can be implemented at low cost with the CSM12 connection of the
SIMATIC S7-1200 77 and control of SIMATIC S7-1200 systems. Through the use of CSM
1277, the Ethernet interfaces on a SIMATIC S7-1200 module are multiplied for the additional
connection of up to three programming devices, operator input elements and further Ethernet
nodes. This makes simultaneous communication with operator input and programming
devices, further controllers or the office networks possible. The use of straight-through
connecting cables is possible thanks to integrated autocrossover function.
The module has a rugged plastic housing with IP20 degree of protection and is intended for
installation on a SIMATIC S7-1200 standard rail.
Features
External power supply 24 VDC
Connection for Industrial Ethernet/PROFINET
Gigabit interface
● Suitable / available or according to the specified standard.
346
CSM 1277 unmanaged
CSM 1277
●
4x RJ45
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System Manual, 09/2019, C79000-G8976-C242-10
Industrial Ethernet