Hi peter,
Looking at screenshots on MERG forum it appears that the module has been taught node 0 events, ie short events.?
To send these,? just enter the address,? eg "+30" without a node number.
If you see the JMRI MERG CBUS event table, acessed via MERG menu in main panel pro window, you may be able to see more clearly how these work and exactly what events are being sent,
Steve.