So, say, blue is TX and orange is RX. Just tie blue/white and orange/white together for ground?It should TX/gnd and RX/gnd.
Oh, because RS-485 has two lines for TX (+/-) and two for RX? I'm thinking of DMX here.Yes, RS-485 is different.
A and B lines make up a twisted pair, plus a common ground.
I am more familiar with half-duplex networks using RS-485.Oh, because RS-485 has two lines for TX (+/-) and two for RX? I'm thinking of DMX here.
(I've been wondering about those USB-to-RS485 adapters that only have screw terminals for two wires. I guess it leaves out the common ground??)
Yes, no common ground really needed to operate. (differential pair)(I've been wondering about those USB-to-RS485 adapters that only have screw terminals for two wires. I guess it leaves out the common ground??)
Ah. Maybe I'll try it then. Just two wires. (I guess I was wrong about the pairs in DMX. I'll have to find out what the 2nd pair of wires is used for. They're labeled optional.)Yes, no common ground really needed to operate. (differential pair)
Max.
Used to be possible to get twisted pair flat cable. It was a popular choice for RS232 runs.Running RS-232 over a long length of twisted pair cable, should TX/gnd and RX/gnd be paired, or should TX/RX be paired and gnd left on its own?
Probably too long! I don't know the distance, but the cable is run like a bus to control LCD TV's. Probably way beyond spec. I think it mainly just transmits control codes occasionally. The thought of multiple TV's possibly transmitting back at the same time scares me. haha (It wasn't my idea to do this.)depends what 'Long Length' is.!
Max.
Baud rate is usually tied to distance.Probably too long! I don't know the distance, but the cable is run like a bus to control LCD TV's. Probably way beyond spec.
Baud rate is usually tied to distance.
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