User`s manual

Hardware
Setup
Serial Port Connector: COM2 – COM5
Each RS232 COM port has similar pinouts.
2-13
Signal Pin Pin Signal
NDCD 1 2 NSIN
NSOUT 3 4 NDTR
GND 5 6 NDSR
NRTS 7 8 NCTS
VCC_COM 9 10 [KEY]