CV 28
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NMRA CV 28 - Bi-Directional Communication Configuration (RailCom®)
This CV is used to configure decoder’s bi-directional communication characteristics when RailCom is enabled in CV 29.
Note: If the decoder does not support a feature contained in this table, it shall not allow the corresponding bit to be set improperly. E.G. if a decoder does not support RailCom, this CV will read 0 and will not accept any values to be programmed to it.
| Feature | Description | Default | Value |
|---|---|---|---|
| Channel 1 | If enabled, Channel 1 will broadcast the address. | ON | 1 |
| Channel 2 | If enabled, Channel 2 will send and receive data and provide acknowledgements. | ON | 2 |
| Programming Address 253 | Serves as a programming lock. If this setting is disabled, programming address 253 will be locked. | ON | 16 |