Using my Cab1-L set the TR ID to #5. I am able to turn on an vary the voltage using the Cab1-L as desired. However, the TR ID does not show up in my Cab3. Is that a known bug? Do I need to assign the PowerMaster as an ENG ID# instead of a TR ID# for it to appear in the Cab3 App roster?
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Yes, this is a known but uncorrected bug. You can assign your Powermaster as an ENG# but this is only a partial workaround because there are additional CAB-3 bugs that impact the Powermaster. For example, momentum can’t be turned off which creates an intolerable lag in voltage response to throttle changes. There are also multiple throttle related bugs which cause voltage to be out of sync with throttle position. For example, if you set the Powermaster to 200 speed steps, voltage will only increase up to step 31 and drop to zero at step 32. Another bug involves the direction button. If you press it, the voltage goes off and back on but the throttle stays at 0. And I don’t recommend playing around with other AUX-1 + # commands. Some cause the Powermaster to “flutter” off and on to full power which wreaks havoc on conventional engines. It also trips up DCS engines which then miss the watchdog and fly off at 200mph. The bottom line is that I would recommend staying with your CAB-1 which works correctly. If you really want to use an app for Powermaster control, you may wish to consider the MTH DCS app which does an excellent job if you assign your Powermaster as a Legacy or TMCC engine.
Thanks for the observations. I am using it to power accessories and want to limit the voltage to 14-16 V to keep my lightbulbs happy. I'll use TR ID# assignment and the Cab1-L
A separate and probably old question is if the TR ID# assignment is used can the Cab1-L set a max voltage as described in the PM user manual on pg#13?
Yes, you could potentially put your Powermaster in CMD mode and set a voltage limit. The only part I am not certain about is whether this would work if assigned as a TR versus ENG. I have always assigned my power masters as ENG without issues. But a lot of folks like using a TR assignment for reasons unknown to me. For my own personal understanding what is the advantage of having all that costly infrastructure (base / power brick / Powermaster) to set a fixed voltage when it could be replaced with a single transformer set to 14 volts?
Very good question. The only reason is to control it from my remote. I already have the Cab3/Cab1-L infrastructure. It is indeed an expensive option for accessory power control.
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