I’ve 3 inputs called I1, I2 and I3 (VMB7IN).
I’ve 1 output called O1 (VMB4RYNO).
I’ve 1 virtual output called vO1 (VMB4RYNO).
In normal situation, everything has value 0.
Output O1 gets the value 1 when input I1 or I2 or I3 gets the value 1 but only if virtual output vO1 has the value 1.
If vO1 has the value 0, than the value of O1 stays 0, even I1, I2 or I3 gets the value 1.
please take a look at the SUPPORT/FAQ (Dutch part of velbus website)
The first item tells you how the use sun rise programmation, you only have to change the relay by your virtual relay.