The CoolGear USB-8COMi-M Series is a versatile and reliable USB to serial adapter with 8 COM ports. Easily connect multiple devices to your computer. For step-by-step instructions on installation and usage, download the free manual from our website. Enjoy seamless connectivity and productivity with this innovative product. Download the manual from manualshive.com.
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RS-485 4-Wire (Full duplex) Signal Pin-outs of DB-9 Male
Pin 1
Tx- (A)
Pin 2
Tx+ (B)
Pin 3
Rx+ (B)
Pin 4
Rx– (A)
Pin 5
GND
RS-485 2-Wire (Half duplex) Signal Pin-outs of DB-9 Male
Pin 1
Data- (A)
Pin 2
Data+ (B)
Pin 5
GND
RS-485 Signal Wiring
•
Point-to-Point 4-Wire Full Duplex
•
Multi-drop RS-485 2-Wire Half-duplex
