I am off on a bit of a tangent here and have to admit that I have not really looked into console capabilities. I am sure that I misunderstood that the console could handle more inputs as being complete ISS's. Maybe the post I read just showed that you could change the station id of the ISS by shorting the dip switch pin spaces on the board.
A console can only ever listen to exactly one ISS.
Given that the wired system is a point-to-point link, there will only ever be one ISS so there is no-need for dip switches to change station id.
The need for a station id is twofold:
1. to provide the ability to change wireless transmitter ID to prevent interference with neibouring stations and
2. to provide the wireless system to listen to additional sensor stations, and differentiate between them by id.
To reverse engineer this, you need to look at the whole system, not just a small part of it...
Now back to the ISS communication debate: simplex or duplex? I would like to find out what brand RS485 snapper used so I can check the data sheets.
Not really a debate, more a fact that the ISS is transmit only. It doesn't matter what the spec sheets say about duplex/simplex...
Many people here have spent many hours looking at this, myself, I have spent days with an oscilloscope and can categorically say that the consoles do not transmit data to the ISS.
The rs485 sniffer I used was just a cheapie from ebay (cost about 5ukp) it has "model STM485S" written on it...
I connected green wire to D+ and red wire to D-