From OpenSCADAWiki
In the template we will create two IO for inputs ("TiCod", "ToCod"), two for output ("Ti", "To") and one transparent ("Cw"). For the IO "TiCod", "ToCod" and "Cw" we will set the "Configuration" sign in Link, which will allow them to be linked with the "raw" sources. Will set the sign "Attribute" for the IO "Ti" and "To" to Read only, for "Cw" to Full access — to form three attributes in the data acquisition parameter: two is on read only and one on full access.