RS232
full duplex
point to point
short distance(1 meter) at 115kbaud
at least 3 wires (more with handshake control)
RS485
half duplex
point to multi-point (master to multiple slaves)
1200 m distance at 115kbaud
2 wire (RS422 uses 4 wires)
full duplex
point to point
short distance(1 meter) at 115kbaud
at least 3 wires (more with handshake control)
RS485
half duplex
point to multi-point (master to multiple slaves)
1200 m distance at 115kbaud
2 wire (RS422 uses 4 wires)
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