This installation guide is for the 4012 light entry signal from Viessmann for the LED-Classic on the LED bus.

Connecting to the LED-Classic

The wiring diagram shows the pin assignment.

Wiring diagram 4012 entry signal on LED-Classic .

Registering the module in the WiFi

If the CTC-Multi IO Board 4 is not yet registered in the model railway WiFi, you must do this first. You can find the instructions for this in the operating instructions in Chapter 3.1 "Registering modules in the WiFi" .

Opening the configuration

A registered CTC-Multi IO Board 4 can be found under its name in the module list in the CTC app. There, click on the pencil icon to open the "switch box configuration".

Open config module list

There, click on the "Change config" button:

Change config

Adding the product

In the config dialog, click on the plus button to the right of "Connected products" to select what type of product you have connected:

Edit config 1

Select the product catalog "universal signal" and then click "Apply":

Edit config 2

Give your signal a meaningful name and select the appropriate product and product configuration. Then click "Apply":

Edit config 3

Connecting the product

Now you need to specify which connections of the CTC module the signal is connected to.

Edit config 4

If it is not yet connected, click on "Connect".

For the other signals in the row, proceed in exactly the same way as for the first one.

Uploading the configuration

Once all pins are connected, you can click the "Upload" button to save the changes to the config on the CTC-Turnout-Module:

Edit config 7

The CTC-Turnout-Module will restart.

Signal in the signal tower

After a few seconds, the newly configured signal appears in the signal tower:

Edit config 7

Here you can now switch between the individual light signals.