What line does RS485 usually use?
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Wire mesh used as RS-485 bus has some waste and communication quality can not be guaranteed. It is recommended to use special shielded twisted pair as wire for RS-485 line, and 0.5 mm is recommendedWire diameter wire.
The wire problem: 485+ requirements in RS-485 specification, 485- bus wiring, two wires to each other and with a twisted pair,The shield protects the signal line from interference from the external environment. In the field construction, because the cable is widely used, many people use the cable as the wire of the 485 communication line, because the cable has eight lines, and the diameter of the single is thin
