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Chapter 5: Using Hardware Interface
5.1 Using Serial Port
Wires color
White
Purple
Orange
Yellow
Blue
Brown
Definition
RS232 RXD (CPU)
RS232 TXD (CPU)
RS232 RXD (USB)
RS232 TXD (USB)
RS485-A
RS485-B
ttyUSB0
ttyUSB1
Device tty ports
ttyUser
2. RS232 orange/yellow wires and RS485 blue/brown wires are converted from the USB
Hub and will only work if there is an external power supply connected.
1. RS232 purple/white wires are from the CPU. it works the same as the MDT-860 and
MDT-760. It can work even without connecting a external power supply.