Bi-Directional Communication

ContentObjectsSensors


www.digitrax.com_images_transponding.jpgwww.ringwelt.de_ejurat_barcodeerkennung_2ofinterleaved.jpgwww.merg.org.uk_merg_images_merg_logo.jpg


Techniques

Technique Manufacturer Pro's Con's Retrofittable PoM CV-read
Barcode BarJut Yes No -
RFID MERG RFID
CAN-GC4
Arduino + GCA41
LDT
Easy and inexpensive, except for the readers, to put transponders in all of the roling stock for tracking. Restricted² communication, ID only on enter.
Only usable fore small scale like N, larger scales will run to fast for the reader to detect.
Yes No
Transponding Digitrax Standard LocoNet, 'Listening' by wire. Mounting of transponding receivers need some special attention. Not very reliable. No Yes, tested
LISSY Uhlenbrock
Per's Model Train recognition system
Standard LocoNet, easy to install, open protocol. Restricted communication, only info on 'eye contact'. Yes No
RailCom Tams
OpenDCC-BiDiB
Digikeijs
After OpenDCC grounded and implemented BiDiB it became stable and usable. Need new DCC equipment. No Yes
Selectrix Müt Selectrix and address only. Yes No


PoM CV-Read

PoM = Programming on the Main, also referred as OPS (Operations Mode Programming).

  • Very fast, no polling but direct answer.
  • If only interested in CV-Read, only one transponder receiver is needed for the whole layout. (Transponding)


Reactions in Rocrail

Both tables show the reaction of Rocrail if a BiDi decoder is detected in a block.

Without create guest on BiDi

Mode Unknown Known Accept BiDi
Manual ignore set in block ignore
Automatic ghost ghost set in block


With create guest on BiDi

Mode Unknown Accept BiDi
Manual create guest + set in block create guest + set in block
Automatic ghost create guest + set in block


Related pages

Additional functionality

Automatic mode

  • Check the Code against the loco who reserved the block. If it does not match: Ghost.

Trains

Run manual loco into block


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