LOGO! - small is beautiful

Simply ingenious for small automation tasks

Simple installation, minimum wiring, user-friendly programming: You can easily implement small automation projects with LOGO!, the intelligent logic module from Siemens. The LOGO! logic module saves space in the control cabinet, and lets you easily implement functions, such as time-delay switches, time relays, counters and auxiliary relays.

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LOGO! Basic Modules

LOGO! Basic Modules

LOGO! is the perfect choice as a fast, uncomplicated and space-saving solution for basic control tasks. LOGO! has long been a constant as an intelligent logic module for small automation projects.

LOGO! Expansion Modules

LOGO! Expansion Modules

A wide range of expansion modules allows the user to set up a flexible LOGO! Configuration with a maximum of 24 digital inputs, 20 digital outputs, 8 analog inputs and 8 analog outputs possible.

LOGO! Power

LOGO!Power & Inrush current limiter

LOGO!Power & Inrush current limiter

The mini power supply devices designed like LOGO! modules offer great performance in the smallest space: The excellent efficiency over the complete load range and the low performance loss during idle times guarantee efficient operation.

The mini inrush current limiter in LOGO! design offers special protection in the smallest space:

As an upstream device in front of AC 230 V LOGO! basic or LOGO!power modules the LOGO! ICL230 reduces the inrush current.

For DC 24 V devices with high inrush currents the up streamed LOGO! relay module is protected against these excessive inrush current by the LOGO! ICL230.

LOGO! Communication

LOGO! Communication

The LOGO! family offers many communication options. In LOGO! 8, the connection to the communication modules is done via Ethernet. This means the entire address range of the inputs/outputs remains available for digital and analog signals.

Operator Devices

Operator Devices

LOGO! TDE and SIMATIC Basic Panels offer simple operator control and monitoring possibilities.

LOGO! Software

LOGO! Software

LOGO! Software supports small automation projects with simple and intuitive configuration and operation, from the engineering software LOGO! Soft Comfort, to the LOGO! Access Tool, and also the LOGO! Web Editor for the web server integrated into LOGO!

HM und SPS en Shoutbox
Hybrid Event, Apr 17 - Apr 21

Hannover Messe 2023

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Experience how industrial Digital Enterprises can be part of the solution for a smarter, more sustainable world. 

Get your free ticket now to be part of the Siemens experience at Hannover Messe, April 17th to 21st.
Onsite (Hall 9, stand D53) and online.

Which LOGO! user are you?

Whether in industry, building automation or as a hobbyist  - LOGO! is the perfect choice for fast, uncomplicated and space-saving solutions around control and feedback systems. Discover the possibilities of LOGO!
Simply ingenious for small automation tasks

System Overview

LOGO! accommodates virtually every demand of customers: with or without display, full communication options via Ethernet and integrated web server that does not need any html knowledge.

Getting started - first steps with LOGO!

Learn more about LOGO!

Download brochure


LOGO! in Practice

View application examples and industry-specific solutions that might be of interest to you. 
Support and services

Further information

Support Services

Within the framework of Online and Technical Support, Siemens Industry offers a wide range of services. Online Support, Technical Support...

Spare Parts Services 

Siemens Industry's spare parts services are available worldwide and provide smooth and fast supply of spare parts – and thus optimal plant availability.

SITRAIN - Digital Industry Academy

Further education for all Siemens industrial products - directly from the manufacturer, individually, with the latest methods.


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