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Siemens AG
Entry type: Application example Entry ID: 64143308, Entry date: 04/16/2019

Building Automation: House Control with LOGO! 8 and Master-Slave Communication (LOGO! Set 9)

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The LOGO! 8 controller together with further LOGO! 8 controllers is used to control and monitor various functions in houses or other buildings. A smartphone can be used to monitor and control the house functions via WLAN.

The aim is to individually automate the functions of a building with a controller. This application uses an example to show how to realize an automatic house control.
The following functions shall be controlled manually or automatically:

  • Blinds
  • Roof hatch
  • Interior and exterior lighting including panic switch
  • Heating
  • Garden watering 

In this automation task, a vast number of signal must be processed. This requires the use of several LOGO! controllers. A LOGO! (master) controller is connected to other (slave) LOGO! controllers and is thus able to connect additional inputs and outputs to the master controller with master-slave communication. This enables substantial expansion of a LOGO! controller. This example of the house control is used to explain interconnection and expansion of the inputs and outputs of the LOGO! simply and easy to understand. Because of the integrated Webserver of the LOGO! controller, the house functions can be monitored and controlled via WLAN with a mobile device (smartphone, tablet) or a PC.

Figure 2
The automation solution fulfills the following operating requirements:
  • Controlling and monitoring a house controller with a mobile device (smartphone, tablet) via WLAN on the integrated webserver of LOGO! 8
  • Operating a house controller with buttons, the LOGO! display and the LOGO! TDE
  • Time-based control of blinds and garden watering in automatic mode
  • Temperature-based control of heating and roof windows in automatic mode
  • Display of the status of the relevant house function on the LOGO! display in the distributor box and on an external text display (LOGO! TDE)
  • Light pushbutton with integrated panic function and central pushbutton for switching off all lights

This application offers you the following advantages:

  • High user friendliness thanks to house control monitoring via WLAN with a mobile device (smartphone, tablet)
  • Protection of the blinds during maintenance work
  • Presence simulation when absent through automatic opening and closing the blinds via a random generator
  • Immediate switching all lights on and off via panic buttons

This application offers you the following advantages:

  • Cost-effective support thanks to saved space in the distributor box
  • Time saved due to reduced wiring work
  • Monitoring of the room temperature and heating control with setpoint specification
  • Control of several areas and functionalities of a house control via still unassigned inputs and outputs
  • Planning safety due to a configuration successfully tested.
  • Avoiding failures with a tested code and step-by-step instruction.

The application example is available for download for the new LOGO! 8 and for LOGO! 7.

Downloads LOGO! 8
  Documentation (2,0 MB)
 Registrierung notwendig  LOGO!Soft Comfort project (626,7 KB)

Downloads LOGO! 7
  Documentation (2,2 MB)
 Registrierung notwendig  LOGO!Soft Comfort project (151,8 KB)

Further Information
LOGO! Set 10: House Control with LOGO! 8 and Touch Panel 
LOGO! Set 11: House Control with LOGO! 8 and Weather Sensors
Micro Automation Overview in Industry Online Support
LOGO! 8 Manual

Last Changes
Complete revision of LOGO! software and documentation; Including user defined webserver

Additional Keywords
LOGO! Ethernet, LOGO!, blinds, LOGO!, lights, sunblind

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