14 C5S110&120&140
User Manual
fingerprint verification of RS485 reader).
1)
Connection with RS485 Readers
C5S110 can connect two RS485 readers in the one-door two-way mode. C5S120 provides four readers, which can
be connected in the two-door two-way mode. C5S140 provides eight readers, which can be connected in the
four-door two-way mode.
RS485 reader connection: First of all, set the RS485 address (device number) of the reader by DIP switch or other
ways.
RS485
address
Control Panel
1
2
3
4
5
6
7
8
C5S110
1Door
IN
1Door
OUT
C5S120
1Door
IN
1Door
OUT
2Door
IN
2Door
OUT
C5S140
1Door
IN
2Door
IN
3Door
IN
4Door
IN
1Door
OUT
2Door
OUT
3Door
OUT
4Door
OUT
Connection between C5S140 and RS485 Readers
Besides, a single EXT RS485 interface can supply maximum 750 mA (12V) current. So the entire current
consumption should be less than this max value when the readers share power with the panel. In calculation,
please use max current of the reader, and start current is usually more than twice of the normal work current,
please consider of this situation.
For example, use the KR502M-RS card reader, the standby current is less than 80mA, the max current is less than
90mA, When the device is start, Instantaneous current can reach 180 mA. As RS485 reader, consider the starting
current is bigger, through the EXT RS485 interface can only connect four readers for power supply. So the power
of control panel connect only nearest 4 readers.
If RS485 reader is connected externally and shares the power supply for the device, it is recommended that the
GND
+12V
(Separate power supply)
PC
8# Reader 5# Reader 4# Reader 1# Reader
GND
485B
485A
TCP/IP
+12V
GND
+12V
