In conventional the handles function as normal. But, when the command base is on the zw does the following. A and d off. B and c on.
So, if you leave the b and c handles at 18 volts. When you turn the zw back on when the command base is powered first. (Make sure of this) Those outputs will be 18volts... tHe a and d outputs will be off regardless where the handles are set.
so, let's assume you are running all command. That you are running engines on a and d and accessories on b and c. You would leave the b and c handles set to say 14vac. When the layout is powered up all the accessories will be on.
The a and d post were designed different. Remember, they were designed the be off when first turned on. You must bring up both throttles to max voltage or less.
There will be no voltage. The cab 1/cab2 must address the tracks numbers that correlate to those outputs.Then the throttle must be turned to raise The voltage.
after a reset the a post is track 1, b track2, c track 3,, d track 4. So, try this. Turn on command base first. Followed by the transformer. There should be no voltage on A.
lift the A handle. There should still be no voltage. Using cab1/2. Press tr then 1..slowly turn the throttle. The transformer should slowly bring up the voltage.
if you are running all command leave both a b c d throttle on to the voltage you normally use. Do you have the manual for the transformer?