Siemens LOGO! System

• What is the Siemens LOGO! System

• What distinguishes Siemens LOGO! From other PLC systems?

• Wide range of applications from Siemens LOGO!

• Application example for the Siemens LOGO! Systems

• Conclusion

Siemens LOGO! Is a novel system used primarily for the automation and monitoring of electrical consumer systems and sensors. Siemens LOGO! Replaces classic "stupid" electrical components used to connect electrical consumers. Because Siemens LOGO! Can be programd, the switching processes for the electrical end users suddenly become "intelligent" and open up new application possibilities.

Often the Siemens LOGO replaces! Control:

• Time switches, which can be located in a power box, as a component in a machine or at a Schuko socket
• Protective relay for switching off electrical consumers in emergency situations
• Counters designed to measure consumption, operating time or costs of consumers

With the help of Siemens LOGO! These components can be controlled by a programd software logic. Such systems are referred to as programmable logic controllers (PLCs).

Siemens LOGO! Is an intelligent complete system of hardware and software components. This is how Siemens LOGO offers! For example, the basic equipment already includes an easy-to-use basic element with display. This means, for example, that in home automation awnings, blinds or roller doors can be controlled via a programmable menu. Siemens LOGO! Brings an integrated web server so that the elements connected to the base module can be controlled via the browser app in the smartphone, tablet or with a desktop PC.

The base unit can be easily supplemented with expansion and control modules. You can connect all electrical consumers to the control modules, which you can also connect to an ordinary relay. This means that you can connect sprinkler systems or blind motors via the analogue and digital outputs of the control module and control them via the Siemens LOGO! operation. The prefabricated plug-in systems reduce the wiring effort to a minimum; the modules themselves can be dynamically mounted on a DIN rail.

Siemens LOGO! Uses current, everyday and highly standardized interfaces. Thus, the base unit offers a RJ45 Ethernet connection for data exchange with other network components and for connecting the web server to the local network as well as a commercially available SD card slot for storing data records.

In addition to the feature-rich development environment, Siemens LOGO can be used! SoftComfort also draw circuit diagrams that help with the documentation of the project.

The Siemens LOGO is due to the possibility of software-controlled interaction with electrical switching and measuring elements! System popular with hobby-hobbyists as well as with professional engineers. The system is used, for example, in home automation for controlling irrigation systems, blinds or awnings. In industry, it is used, among other things, for the control of conveyor belts, lifting platforms or feed systems.

Thanks to the SD card memory, the Siemens LOGO is suitable! For precise long-time recording of data. Siemens LOGO can do this! Further process the data of connected sensors (for example for temperature or weather) via the programming logic and then store it on the SD memory. The IoT Gateway from Siemens can also be used to access applications for the Internet of things that require an Internet connection. The embedded Web server provides viewers with highly descriptive dashboards that have been developed in advance for each scenario.

In this example project, the Siemens LOGO! Control module with display is installed in an easily accessible location inside the building. In the best case, the module is located in a place with a view of the garden.

There, the user selects from different menu items. The menu items and their control have been programd in advance. For example, by pressing a button, the user can manually start an immediate watering of the garden via the irrigation solutions connected to the control module. This is useful for watering newly embedded seeds for the first time or for checking the operation of the irrigation system. In this case, the user can activate either all sprinklers at the same time or individual elements in a sub-menu.

On the other hand, you can set times at which individual irrigation elements are to be activated automatically. Thus, it is possible, for example, to initiate an unattended watering of the garden on holiday or overnight. In addition to the time, the duration of the watering process can also be configured. Thanks to the integrated web server, this control can be done remotely.