The picture shows Upgrading of a UCM/Cbus using UCM/USB
When the programming cable is connected to the UCM/Cbus, and the PP2 shunt inserted on the UCM/Cbus, its D9 and D10 leds will flash in time with that on the UCM doing the programming
The UCM/CBUS should not be connected to Comfort at this time
When the programming cable is connected to the UCM/Cbus, and the PP2 shunt inserted on the UCM/Cbus, its D9 and D10 leds will flash in time with that on the UCM doing the programming
The UCM/CBUS should not be connected to Comfort at this time

