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Summary: A method of locking multifunction decoders to prevent programming.
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Accessory Decoder, Automatic Phase Inversion, Booster, Command Station, Computer Interface, Consists, DCC Ready, Decoder, Digital Packet, How Digital Command Control Works, Multifunction Decoder, Power Supply, Speed Steps, Throttle, Throttle Network
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Address Partitioning, Analog Control of Model Railroads, Bus, Cab, Can Motor, Command Control, Coreless Motors and DCC, DCC, DCC in a Box, Distributed Power, Frog Juicer, Jump Port, LCC, Layout Command Control, LocoNet, Locomotive, Multiple Unit Consisting, National Model Railroad Association (NMRA), Original Equipment Manufacturer, Phase, Power Bus, Programming Track, Quarter Test, Serial User System Interface - SUSI, Slots, Sound, Standard Dimensions, Starter Set, Turnout Motors, Turnouts, Voltage Drop, Wi-Fi Throttle, XpressNet, Zero Stretching
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Analog Conversion, Back EMF, Decoder Connection Method, Digitrax Transponding, Ditch Lights, Dither, Driver Quartering, Energy Storage, FX Lighting, Functions, High-Frequency Decoders, Kick Start, Lighting Effects, Momentum, Multifunction Decoder Assisted Consisting, Multifunction Decoder Programming Lock, NMRA Connector, NMRA DCC Plug for Multifunction Decoders, Power Conversion, Pulse Width Modulation, Silent Drive, Snood
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Ammeter, Continuous Load, Digital Multimeter, FRED, Heat Shrink Tubing, Magic Smoke, Motor, RJ12/RJ25 Connector, Rail Size, Rule 17, Series Resistor, Stall Current
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Primary DCC Components
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Short Definition
A method of locking multifunction decoders to prevent/facilitate programming.
Multifunction Decoder Programming Lock is a technique to lock multifunction decoders to prevent accidental programming or to enable programming two decoders in the same locomotive separately which share the same address. This allows one decoder to be locked, defeating the ability to program it, while allowing the other to be programmed. This feature can also be used to prevent accidental programming of a multifunction decoder. This feature uses CVs 15 and 16.
Multifunction Decoder Programming Lock is an optional feature, used when a multifunction decoder was installed in a locomotive and the modeller desired more functions than it supported. An additional decoder, such as a sound or function decoder sharing the same address, could be added and programmed independently. In operation all the decoders would respond to the same address. Today it would be rare to see such an arrangement, as multifunction decoders support a wide range of functions and sound effects. It could be used today with multiple function decoders installed for lighting or other effects in rolling stock, enabling control with one address of multiple decoders.
Another application is to prevent the accidental altering of the CVs in a multifunction decoder by an operator, such as adding or deleting a consist address.
For more information see the Decoder Programming Lock page.
