CSM 1277 6GK7277-1AA10-0AA0 Siemens Unmanaged Switch

Product Description

The Siemens CSM 1277 (6GK7277-1AA10-0AA0) is a compact, unmanaged Industrial Ethernet switch engineered for direct use with SIMATIC S7-1200 controllers. It expands the controller’s Ethernet interface, enabling stable communication with up to three additional Ethernet devices such as HMIs, engineering stations, or peer controllers.

Designed for cabinet-level automation, this module emphasizes simplicity and reliability. It requires no configuration, operates as a plug-and-play device, and supports standard 10/100 Mbit/s Ethernet communication suitable for machine-level networks.

The switch is optimized for small automation systems where space efficiency and straightforward diagnostics are priorities. Integrated LED indicators provide immediate visibility of power and communication status, supporting faster commissioning and maintenance.

Application Scope and Functional Role

The CSM 1277 (6GK7277-1AA10-0AA0) is intended for compact Ethernet topologies in manufacturing cells, packaging machines, test benches, and local control systems. It is best suited for environments that require dependable Ethernet expansion without advanced network management features.

Technical Specifications