It's actually pretty simple:
The PR3 has two modes of operation - One is "talk to the LocoNet" (MS100) mode, and the other is "use my (the PR3's) programming outputs" (Stand-alone Programming) mode. It can only be in one of those modes at any given time.
Due to the differing nature of those two modes, there are also two rather basic sets of connection requirements: If you want it to program decoders. you have to provide the correct DC power (the PR3 comes with a wall-wart) and connect it's programming outputs to a programming track. And if you want to talk to the LocoNet, you have to connect it to, well, the LocoNet.
To put it in the mode you want, you simply push the "Mode" button. The LED's on the device indicate which mode you're in. The PR3's instructions have a table describing the various LED colors/flashes/etc, so I won't repeat that here.
But there's an easier way to set the mode: Set up your JMRI profile(s) correctly for your intended use!
For example, my DecoderPro profile puts my PR3 in Stand-alone Programming mode, and my PanelPro profile puts it in LocoNet (MS100) mode.
Bottom line; Since you are getting a 306, your computer and the PR3 aren't talking to each other. Check that your physical connections and your JMRI profile are set correctly for the PR3 mode you intend to use, and that the proper DC power is applied if you are using Stand-alone Programming Mode.
More info here: <>
HTH,
Steve (A Happy PR3 user for many years)
---In jmriusers@..., <decals@...> wrote :
I have never been able to make complete sense out of the Digitrax instructions on "correct mode".
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