Siemens CSM1277 Compact switch module, 4 x RJ45 ports Part number 6GK7277-1AA10-0AA0

Integrate machines into existing plant using unmanaged Compact Switch Modules (CSM). The Compact Switch Modules (CSM) is incorporated into the system to increase the number of interfaces directly on the SIMATIC S7, ET 200M or LOGO! logic modules at low cost – and increase the number of potential connections at the same time. A space-saving design that is just right for industrial use makes the CSM ideal for use in all control panel applications. The LED status display on the device helps with fast and easy diagnostics.