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COM3 [RS-485] connect
RS-485 2 wire Device
NP-610X
COM1 [RS-485]
9P D-SUB Female
RS-485 2 wire Device
4 Data+ Data+
5 Data- Data-
1 GND
COM3 [RS-485] connect
RS-485 4 wire Device
NP-610X
COM1 [RS-485]
9P D-SUB Female
RS-485 4 wire Device
1 Rx- Tx- RS485 Transmit
2 Rx+ Tx+ RS485 Transmit
3 Tx- Rx- RS485 Receive
4 Tx+ Rx+ RS485 Receive
5 GND
2.3.3 USB Master port
The USB Master port can connect USB mouse and USB keyboard.
The USB Master port support USB 2.0 full-speed host (12Mbps).
This port support USB Mass storage device. But the USB hard disk must use external power.