7. Get Connection – Preparations
Connection via USB will create a virtual serial COM Port and will therefore consequently
ask for installation of the appropriate drivers. This driver installation is described in the
according instruction manual of the SNG3.
7.1 SNG3 Interface Converter
Figure 7.1.1: Picture of SNG3
The interface converter SNG3 (optional, see chapter 10. “Accessories”) can be used for
connecting a reader to a host/PC via USB. Powering of the reader is carried out as well by
the SNG3 (in case this is connected to a power supply unit itself). For this a special wall
power supply is available (optional, also see chapter 10. “Accessories”). The drivers
needed can be found on the CD within delivery.
SNG3
Description
Function
UDL 250
Pin 1
+V
CC
Supply voltage for UDL 250 (12...24 V/DC)
Pin 1
Pin 2
GND
Ground
Pin 3
Pin 3
RS485–A
RS485 interface, data line A
Pin 2
Pin 4
RS485–B
RS485 interface, data line B
Pin 4
Table 7.1.1: Pin Assignment for connection SNG3 to UDL 250
Connect as follows:
PC
SNG3
UDL 250
Figure 7.1.2: Connection Scheme for UDL 250 with SNG3
V14/05/09
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Wiring and Installation UDL 250