In the reference I post earlier . Refer to figure 2.1 - what is the title? I'm sure there's no misinterpretation here. I think you'd best be telling B&B that they're lying and spreading misinformation.


Where in the RS422 standard does it say multiple devices can drive a pair? Sure you can have multiple receivers, but multiple drivers?

The RS485 standard allows multiple drivers, so what does one call a RS422 connection with multiple drivers?
According to your rules it can't be called RS422 because it is not in accordance with the standard and it's not RS485 because it uses two pairs. So what is it? It's obviously a hybrid - thus '4wire 485' probably best describes it - nowhere is it said the it complies with EIA/TIA standard xyz. The fact that it is so widespread declares it a defacto standard. The fact that it is refered to as '4wire rs485' differentiates it from the standard '485'. If I asked you about 'AT BUS' interface you'd probably know what I'm talking about even thought it was never a formal standard. So what's your problem with variations of a standard? A '6 clock 8051' shouldn't be called an 8051 because Intel didn't design it that way?? The variation is explicitly stated - so if '4wire rs485' isn't rs485 with 4 wires, then what is it? Then explain it to the world.