19
C3 Pro Series Access Control Panels and ZKBioSecurity 3.0 Quick Start Guide
RS485 Connection
+
+
+
BUTTON BUTTONREADER 1 READER 2BUTTON BUTTONREADER 1 READER 2
TX
RX
TX
ACT
LINK
RX
POWER
RUN CARD
AUX 1
IN
GND
IN
GND
IN
GND
IN
GND
+12V
GND
485-
485+
AUX 2 AUX 3 AUX 4 EXT EXT
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
NO
COM
NC
AUXOUT1
NO
COM
NC
AUXOUT2
NO
COM
NC
AUXOUT3
NO
COM
NC
V+
V-
12V
GND
AUXOUT4
SEN
GND
NO
COM
NC
LOCK1
SEN
GND
NO
COM
NC
LOCK2
SEN
GND
NO
COM
NC
LOCK3
SEN
GND
NO
COM
NC
LOCK4 LOCK POWER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
12345678
ON
+
+
+
BUTTON BUTTONREADER 1 READER 2BUTTON BUTTONREADER 1 READER 2
TX
RX
TX
ACT
LINK
RX
POWER
RUN CARD
AUX 1
IN
GND
IN
GND
IN
GND
IN
GND
+12V
GND
485-
485+
AUX 2 AUX 3 AUX 4 EXT EXT
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
NO
COM
NC
AUXOUT1
NO
COM
NC
AUXOUT2
NO
COM
NC
AUXOUT3
NO
COM
NC
V+
V-
12V
GND
AUXOUT4
SEN
GND
NO
COM
NC
LOCK1
SEN
GND
NO
COM
NC
LOCK2
SEN
GND
NO
COM
NC
LOCK3
SEN
GND
NO
COM
NC
LOCK4 LOCK POWER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
12345678
ON
+
+
+
BUTTON BUTTONREADER 1 READER 2BUTTON BUTTONREADER 1 READER 2
TX
RX
TX
ACT
LINK
RX
POWER
RUN CARD
AUX 1
IN
GND
IN
GND
IN
GND
IN
GND
+12V
GND
485-
485+
AUX 2 AUX 3 AUX 4 EXT EXT
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
NO
COM
NC
AUXOUT1
NO
COM
NC
AUXOUT2
NO
COM
NC
AUXOUT3
NO
COM
NC
V+
V-
12V
GND
AUXOUT4
SEN
GND
NO
COM
NC
LOCK1
SEN
GND
NO
COM
NC
LOCK2
SEN
GND
NO
COM
NC
LOCK3
SEN
GND
NO
COM
NC
LOCK4 LOCK POWER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
12345678
ON
RS
485
#1 C3-400 Pro #2 C3-400 Pro #63 C3-400 Pro
RS485 --
RS485 +
GND
Important Notes:
1. RS485 communication wires should be a shielded twisted
pair cable. RS485 communication wires should be connected
in a bus cascade topology instead of a star topology, to
achieve a better shielding eect by reducing signal reection
during communications.
2. A single RS485 bus can connect up to 63 access control
panels, but preferably 32 is recommended maximum.
3. To eliminate signal attenuation in communication cables and
suppress interference, if the bus is longer than 200 meters,
set the number 8 DIP switch to the ON position. This is
equivalent to a parallel connection of one 120ohm resistance
between the 485+ and 485- lines.
12345678
ON
12345678
ON
SINGLE C3-400 Pro
MULTI C3-400 Pro
Incorrect RS 485 connections
Distance: More
than 200 meters
+
+
+
BUTTON BUTTONREADER 1 READER 2BUTTON BUTTONREADER 1 READER 2
TX
RX
TX
ACT
LINK
RX
POWER
RUN CARD
AUX 1
IN
GND
IN
GND
IN
GND
IN
GND
+12V
GND
485-
485+
AUX 2 AUX 3 AUX 4 EXT EXT
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
NO
COM
NC
AUXOUT1
NO
COM
NC
AUXOUT2
NO
COM
NC
AUXOUT3
NO
COM
NC
V+
V-
12V
GND
AUXOUT4
SEN
GND
NO
COM
NC
LOCK1
SEN
GND
NO
COM
NC
LOCK2
SEN
GND
NO
COM
NC
LOCK3
SEN
GND
NO
COM
NC
LOCK4 LOCK POWER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
12345678
ON
+
+
+
BUTTON BUTTONREADER 1 READER 2BUTTON BUTTONREADER 1 READER 2
TX
RX
TX
ACT
LINK
RX
POWER
RUN CARD
AUX 1
IN
GND
IN
GND
IN
GND
IN
GND
+12V
GND
485-
485+
AUX 2 AUX 3 AUX 4 EXT EXT
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
NO
COM
NC
AUXOUT1
NO
COM
NC
AUXOUT2
NO
COM
NC
AUXOUT3
NO
COM
NC
V+
V-
12V
GND
AUXOUT4
SEN
GND
NO
COM
NC
LOCK1
SEN
GND
NO
COM
NC
LOCK2
SEN
GND
NO
COM
NC
LOCK3
SEN
GND
NO
COM
NC
LOCK4 LOCK POWER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
12345678
ON
+
+
+
BUTTON BUTTONREADER 1 READER 2BUTTON BUTTONREADER 1 READER 2
TX
RX
TX
ACT
LINK
RX
POWER
RUN CARD
AUX 1
IN
GND
IN
GND
IN
GND
IN
GND
+12V
GND
485-
485+
AUX 2 AUX 3 AUX 4 EXT EXT
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
NO
COM
NC
AUXOUT1
NO
COM
NC
AUXOUT2
NO
COM
NC
AUXOUT3
NO
COM
NC
V+
V-
12V
GND
AUXOUT4
SEN
GND
NO
COM
NC
LOCK1
SEN
GND
NO
COM
NC
LOCK2
SEN
GND
NO
COM
NC
LOCK3
SEN
GND
NO
COM
NC
LOCK4 LOCK POWER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
12345678
ON
+
+
+
BUTTON BUTTONREADER 1 READER 2BUTTON BUTTONREADER 1 READER 2
TX
RX
TX
ACT
LINK
RX
POWER
RUN CARD
AUX 1
IN
GND
IN
GND
IN
GND
IN
GND
+12V
GND
485-
485+
AUX 2 AUX 3 AUX 4 EXT EXT
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
NO
COM
NC
AUXOUT1
NO
COM
NC
AUXOUT2
NO
COM
NC
AUXOUT3
NO
COM
NC
V+
V-
12V
GND
AUXOUT4
SEN
GND
NO
COM
NC
LOCK1
SEN
GND
NO
COM
NC
LOCK2
SEN
GND
NO
COM
NC
LOCK3
SEN
GND
NO
COM
NC
LOCK4 LOCK POWER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
12345678
ON
+
+
+
BUTTON BUTTONREADER 1 READER 2BUTTON BUTTONREADER 1 READER 2
TX
RX
TX
ACT
LINK
RX
POWER
RUN CARD
AUX 1
IN
GND
IN
GND
IN
GND
IN
GND
+12V
GND
485-
485+
AUX 2 AUX 3 AUX 4 EXT EXT
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
NO
COM
NC
AUXOUT1
NO
COM
NC
AUXOUT2
NO
COM
NC
AUXOUT3
NO
COM
NC
V+
V-
12V
GND
AUXOUT4
SEN
GND
NO
COM
NC
LOCK1
SEN
GND
NO
COM
NC
LOCK2
SEN
GND
NO
COM
NC
LOCK3
SEN
GND
NO
COM
NC
LOCK4 LOCK POWER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
12345678
ON
+
+
+
BUTTON BUTTONREADER 1 READER 2BUTTON BUTTONREADER 1 READER 2
TX
RX
TX
ACT
LINK
RX
POWER
RUN CARD
AUX 1
IN
GND
IN
GND
IN
GND
IN
GND
+12V
GND
485-
485+
AUX 2 AUX 3 AUX 4 EXT EXT
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
NO
COM
NC
AUXOUT1
NO
COM
NC
AUXOUT2
NO
COM
NC
AUXOUT3
NO
COM
NC
V+
V-
12V
GND
AUXOUT4
SEN
GND
NO
COM
NC
LOCK1
SEN
GND
NO
COM
NC
LOCK2
SEN
GND
NO
COM
NC
LOCK3
SEN
GND
NO
COM
NC
LOCK4 LOCK POWER
IN
GND
BEEP
GLED
WD1
WD0
GND
+12V
BUTTON READER
12345678
ON
RS
485
#1 C3-400 Pro
#1 C3-400 Pro
#2 C3-400 Pro
#2 C3-400 Pro
#63 C3-400 Pro
#63 C3-400 Pro
RS485 --
RS485 +
GND
RS485 --
RS485 +
GND
RS
485
x
x
Figure 26
Figure 27
Figure 28
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