As RS485 is multi-drop, one would assume that you can hang multiple devices on the same line (meaning different devices of different makes, like say two controllers from two different manufacturers). I have two questions:
- Is this at all possible, or should all devices on the 485 line be the same type/make
- If possible, what should I check about the 485 parameters/protocols to ensure it works
The reason I have a doubt is because unlike TCPIP where it's just the addressing that matters (no relation to what the device does, or what's in the packet), I think 485 can have clashes in the above scenario - but I have not worked with 485 so hence the question....