![]() Therefore by either adding decimal 1 or subtracting decimal 1 from the CV29 decimal number you are toggling the binary value of Bit 0 between binary 0 and binary 1 and changing the default loco direction configuration. Thus, if CV29 is an odd decimal number, then Bit 0 must be binary 1 and if CV29 is an even decimal number, then Bit 0 must be binary 0. Bit 0 controls the default loco direction. Each of the 8 bits controls a different decoder function. CV29 represents an eight bit binary word (Bit 7, Bit 6, Bit 5, Bit 4.Bit 0). So what am I doing by either adding or subtracting the decimal number 1 from the CV29 value I here you ask. Replace your loco on the main track with the track re-connected, if disconnected earlier, and it should now run the opposite way from before. Once the write process is complete (should only take a few seconds, the decimal number you have entered should be re-read automatically by RM back into the CV list as a confirmation that the change of CV number has been accepted successfully) save and exit the pop up screens back the to the main RM screen. It is the 'pencil' icon on the far left hand side of the bottom row. With the new number for CV29 entered in the value column, click the ' Write CV' button. In the row associated with CV29 replace the old number with the new number arrived at in the step above. If the number is 'even' then add 1 to it (for example 0 becomes 1, 2 becomes 3, 6 becomes 7 etc). If odd, then subtract 1 away from it (for example 1 becomes 0, 3 becomes 2, 7 becomes 6 etc). Take a mental note of whether this number is 'odd' or 'even'. Once the read CV's process has completed successfully look in the list for the value of CV29. In fact I would tend to do this first anyway just to be 'belt 'n' braces'. If the reading process returns odd values such as a high number of 255 values or keeps giving 'error retrying messages' then cancel the reading task (using the pause ' II ' button) and disconnect the main track from the e-link then try again with ONLY the programming track connected to the e-link. RM will now start reading all the CV's of the loco. ![]() In this window click the Green tick ' Get CVs' icon (bottom right hand side of screen). In the pop up 'locomotives screen' click the locomotive settings ' i ' icon in the bottom left hand side, a 'Locomotive CV Settings' pop up will appear. The icon with the little steam engine next to the cog at the top left hand side of the screen. In RailMaster (RM) click the " Set up locomotives" button. Put your loco on the programming track connected to the e-link programming track output. The easiest way to do that is as follows (saves you Googling): In order to reverse the direction of just individually selected locos you need to adjust the value of CV29 for each affected loco. I'm fairly certain that if you "reverse loco direction in main setup screen" that this is a global RailMaster command so not only will you reverse the direction of the two affected locos you will also end up reversing the correctly operating locos as well.
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