Lokommander II Next18 ECU
User Manual firmware 5.10.306
Version 0.5.07
Page 43 of 118
15.
Bidirectional communication (RailCom)
"Bidirectional" means that the data transfer is two ways, not only from the Command Station. The
decoder will send data to the Command Station if is requested. The decoder can send messages such as
confirmation of receipt of commands, address, actual speed, internal temperature, load and other status
information.
The RailCom operating principle is based on the introduction of a cut-out by the control station at the
end of each DCC package where it interrupts the power supply and short-circuits the two lines. In these
windows the decoders send a few bytes of data that are received by a detector connected between
locomotive and Command Station or by Command Station itself (if it is capable to receive RailCom
information).
The data packet is divided into two channels. On the first channel, the address (short, long, or consist) of
the decoder is transmitted. On the second channel, CV handling POM responses are delivered (reading,
writing result).
RailCom communication can be deactivated from CV29-Bit3 (
“
0
”
- RailCom disabled,
“
1
”
- RailCom
the enabled). Channels 1 and 2 are enabled in CV28 Bit1 and Bit2.
