USBG-COMi-M USB-to-RS232/422/485 Adapter User’s Manual
14
RS-485 Signal Wiring
Point-to-Point 4 Wire Full Duplex
Multidrop RS-485 2-Wire Half-duplex
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Manual Part No.USBG054
2
Tx+(B)
Rx+ (B)
Rx- (A)
Tx+(B)
Tx- (A)
GND
USB-COMi-M
RS-485 Device
1
Tx- (A)
3
Rx+ (B)
Rx- (A)
5
GND
4
RS-485 Device
Data+(B)
Data- (A)
GND
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RS-485 Device x
Data+(B)
Data- (A)
GND
USB-
COMi-M
2
Data+(B
)
1
Data- (A)
5 GND