Home assistant Siemens LOGO! via modbus tcp (digital signals)
'Home assistant' 'Modbus tcp' ‘LOGO!Soft Confort’ 'Siemens' 'LOGO!' 'tutorial'
Home assistant allows you to control any installation, and with ESPHome you can even automate installations independently of Home assistant, but despite the fact that the ESP32, ESP8266 boards and others that are being included in ESPHome are improving a lot, they still have problems from time to time and automate with Home assistant with the constant updates is also generating problems.
If we have an installation that we do not want to fail, it is better to resort to a professional microcontroller, one of the best is undoubtedly the LOGO! from Siemens that in its version 8 has an Ethernet connection with Modbus tcp protocol capacity, in which we can implement a program in a function diagram or in a circuit diagram, also with the Modbus tcp connection we can transfer data to Home assistant and vice versa. This would allow us to view the status history of the installation, send orders from cards in the main display or from automation, both digital and analog signals.
If we make a diagram in LOGO! Taking into account that it works without Home assistant, the installation will continue working even if Home assistant is stopped.
In this first video of the series we are going to see the transfer of digital signals in both directions. First we will see how to configure the Modbus connection of the Logo! With the 'LOGO!Soft Comfort' program we will also make a small function diagram for testing. Secondly, the Modbus configuration of Home assistant with swich entities, then we will create cards in the main visualization to control and visualize, we will also see how to use binary sensors.
We will try to make other videos to see the transfer of analog signals, export some temperature from Home assistant to LOGO! …