2 connect through rs-485 interface – GeoVision GV-R1352 Card Reader (13.56 MHz) User Manual
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1.3.2 Connect through RS-485 Interface
Multiple readers can be connected to GV-AS Controller through a single RS-485 interface.
12V
-
+
GND
(Black)
(Blue)
(Light blue)
(Red)
GV-AS Controller
GV-Reader
GV-Reader
⚫
Switch Settings for RS-485 Connection (GV-Reader1251 / 1352 V2 only)
1
2
3
4
5
6
7
8
ON
ECE
SW4 must be turned OFF.
⚫
Switch Settings for Multiple GV-Readers (RS-485) (GV-Reader1251 / 1352 V2 only)
When connecting multiple readers to GV-AS Controller, turn
SW8
on the last connected
GV-Reader to ON. Make sure to define the ID of each reader using SW5 to SW7 first.
GV-Reader 1
GV-Reader 8
1
2
3
4
5
6
7
8
ON
ECE
1
2
3
4
5
6
7
8
ON
ECE
⚫
ID Number Settings for Multiple GV-Readers (RS-485) (GV-SR1251 only)
To define the ID of each GV-SR1251, see
1.2.3 Define the ID of GV-SR1251
.