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Siemens CSM 1277 Compact Switch Module for S7-1200

Siemens CSM 1277 Compact Switch Module with 4 RJ45 ports for S7-1200 Industrial Ethernet.

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ManufacturerSiemens

Part number6GK7277-1AA00-0AA0

Product type Compact Switch Module

Ports 4 x RJ45

Speed 10/100 Mbit/s

Type Unmanaged switch

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4 x RJ45 ports 10/100 Mbit/s Ethernet Unmanaged, plug-and-play Integrates with S7-1200 Extends Industrial Ethernet network LED diagnostics

Product description

The Siemens 6GK7277-1AA00-0AA0 is a Compact Switch Module (CSM) 1277, designed to expand the Industrial Ethernet connectivity of the SIMATIC S7-1200. This unmanaged switch provides four RJ45 ports operating at 10/100 Mbit/s, allowing the S7-1200 and up to three additional nodes to be connected to an Industrial Ethernet network.

This module is ideal for creating small, cost-effective Industrial Ethernet networks within a control cabinet or for connecting multiple devices in close proximity. It simplifies network setup by providing plug-and-play functionality without the need for complex configuration. Applications include connecting HMIs, drives, sensors, and other Ethernet-enabled devices to the S7-1200 controller for localized data exchange and control.

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Technical specifications

Product type	Compact Switch Module
Ports	4 x RJ45
Speed	10/100 Mbit/s
Type	Unmanaged switch
Power supply	External 24 V DC

Common applications

Local area industrial networks

Connecting HMIs and other devices

Machine control cabinets

Small-scale automation systems

Distributed I/O networks

Network expansion

Compatible systems

SIMATIC S7-1200

Also known as

Siemens CSM 1277 S7-1200 Ethernet Switch Siemens Compact Switch Module

Replaces / compatible with

N/A - Designed as an add-on module for S7-1200 systems to provide additional Ethernet ports.

Technical note

Expert tip

The CSM 1277 (6GK7277-1AA00-0AA0) is an unmanaged switch, meaning it operates automatically without requiring any configuration software for its basic functions.

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Frequently asked questions

How many additional devices can be connected using the Siemens 6GK7277-1AA00-0AA0?

The Siemens 6GK7277-1AA00-0AA0 Compact Switch Module provides four RJ45 ports. One port is typically used to connect to the S7-1200's integrated Ethernet port, allowing up to three additional nodes or devices to be connected to the Industrial Ethernet network.