![]() ![]() An exception is if address zero is used,(or you forget to enter an address when you start). The decoder is first addressed by the Command Station, then the CV is addressed and then the data that is to be written into that CV of that decoder is sent. ![]() POM is very useful for tuning loco performance while it is operating and the ack is the change in performance. Program on the Main writes are often called a "blind write" because there is no response from the decoder that the write was successful. ![]() ![]() If reading fails it usually reports as a 306 error (Timeout Talking to Command Station.) With a few exceptions it is not possible to read from a CV on the Main. The layout gets the same programming! The same is true if you try to program a loco with address zero (or forget to enter an address when you start). Some command stations will only "broadcast" programming commands, which can mean every locomotive on However, because it addresses a specific decoder address, some decoders will not allow you to change the decoder's address using this method! This lets you program a specific decoder on the layout, even while it is Operations Mode (Main Track) Programmer.When the write has been successful the decoder will acknowledge (ack) to the Digital Command Station (DCS.) If the ack is not seen by the DCS it says the decoder did not respond. The CV data is written to ANY and ALL decoders on the programming track. Writing to Decoder on the programming track: If the ack is never received the Command Station tells DecoderPro that the Decoder did not respond. When the Command Station sends the decoder data that is in agreement with what is in the CV of the decoder, the decoder will send an ack. The computer folks call this an ack (for acknowledgement). Sometimes you can see the loco jump a bit as the decoder pulses the motor for “yes”. When DecoderPro is working it will show you what events are being performed. This can take a bit of time since the command station must ask all possible values waiting for the yes response.You can observe the process by looking down at the bottom line of all the panes (the status bar) where the word idle is normally shown when the programmer is inactive. The command station notices the current being drawn and stops asking questions, since it got the yes answer to the last question. They just respond to instructions, so special instructions were developed which allow the Command Station to determine the contents of the decoder's memoriesīasically the decoder is asked a whole series of questions and when the answer is “yes” it turns on the Most decoders cannot talk to send information back to the command station. To obtain information from the decoder on the programming track we rely on the ability of the decoder to respond to a query, what is known as Readback. Reading your Decoder On the programming track: Not all command stations support a dedicated programming track, and some brands will shut down the mainline power when in programming mode (not pleasant when you have an ops session in progress. (Probably because the Locomotive has to be taken to the servicing track to be programmed). With this button you program the locomotive on the dedicated programming track. Service Mode (programming track) Programmer.There are four buttons near the bottom, the first two of which are: What are the Programming Modes? DecoderPro® Programming Modes.How do I set up my preferences? Using DecoderPro®.What DCC systems will DecoderPro® work with?. ![]()
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