GeoVision GV-AS2120 IP Control Panel - Manual (Page 81)

GV-AS120 Controller
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3.2.4 Connecting to the PC
The computer running GV-ASManager software can be used to monitor the access
information and alarm messages from GV-AS120. The communication link between the
computer and GV-AS120 can be either through RS-485 or network. For RS-485 connection,
a RS-485 to RS-232 converter is required, such as a GV-Hub, GV-COM or GV-NET/ IO
Card V3.1. For network connection, an optional GV-ASBox or GV-ASNet is required.
3.2.4.A RS-485 Connection
The figure below illustrates the RS-485 connection to the computer. For this connection, a
RS-485 to RS-232 converter between GV-AS120 and the computer is required. You can use
GV accessories, such as GV-Hub, GV-COM and GV-NET/IO Card, as the RS-485/RS-232
converter.
GV-AS120
GV-HUB /
GV-COM /
GV-NET/IO Card
RS-485
PC
RS-232
Figure 3-6
The table shows the wire assignments of RS-485 connection on GV-AS120.
Wire color Definition
Blue RS485 A+
Light Blue RS485 A-