Direct works best for me with the Zephyr and MRCs. Some of the MRCs read back and others dont. Some of them read back sometimes and not others. Sometimes I program the same CV several times before it takes hold. I have an MRC 1800 that is supposed to read back CVs, but it doesn't. Some of the 1634s read back. MRCs are a crap shoot. "Like a box of chocolates. You never know what your're going to get".
Also make sure the wheels are making good contact. Sometimes I've had the "does not read" error message, and just by moving the engine a few inches it will then work fine.
Paged mode always works on mine. Direct should work as well.
DO you have the program track wired to the correct terminals? The ground connection is in the midde of the two progrma track terminals so there should be a hole skipped on the terminal block. Is the program track clean? Are the loco wheels clean? If you switch to page or direct program mode, press CV, key in 29, and press CV-RD, does it work?
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
Well am going to try some CV changes but am curious as to whats thebest mode for TCS/MRC decoders. Direct ,Page etc... Tried all on my programming track and keep getting the d nc reading on my Digitrax Z while trying CV29 change. Thanks Much