ZKTeco BioPro SA20, Быстрый старт

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PC Connection
2. RS485 communication wires should be connected in a bus cascade instead
of a star form, to achieve a better shielding e ect by reducing signal re ec-
tion during communications.
3. Adjust the communication speed as needed. The signal quality var
ies with
wiring conditions, and it may be necessary to lower the baudrates.
4. The GND Signal may be omitted if and only if the GND potential di erence
is less than ±5V
Do not use
PIN DESCRIPTION WIRE
1
WD0 Green
2
WD1 White
3 GND Black
4
RXD Gray 5
6
GND Black
7
8
485B Yellow
485A Blue
TXD Purple
1
8
1 . RS485 communication wires should be a shielded and twisted pair of cable.
RLED
RJ45-1 COM1
+12V
BUT
BELL+
BELL-
RJ45-3
GLED AL-
IWD0 NO1
GND
RJ45-2
IWD1
NC1
GND
SEN
RJ45-6
BEEP AL+
Ethernet
Alarm
Wiegand In
Output
Wiegand Output
RS485
Lock
Bell
Power Out
Sensor
Button RXD
GND
WD1
TXD
485A
GND
485B
WD0
+12V
GND GND
AUX
Auxiliary In
RS232
Power In
}
}
}
}
}
}
}
}
}
}
}
}
}
}
RS485 Connection
Important Notes:
7