Справочник Пользователя для Iolan Systems Inc. LA-WIWPROXKEYM
LA WIW Proxkey M
ISIBR.doc
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Page: 7
9.
The Wiegand Interface
The data interface is a ‘clock-data’ interface. The following scheme shows the hardware of the lines:
•
Connector 1, the negative is the reference for the data lines.
•
The circuit is similar for clock and data.
•
Maximum current through the transistor is 30mA
•
The maximum open power is 10 volt. For ESD protection a zenerdiode (12V) is applied parallel over
the emitter en collector.
•
There is no pull-up resistance.
10.
The LED interface
Two LED’s are externally controlled, the red and the green LED. The yellow LED lights up when a card is
being read.
being read.
Red yellow green
The controller can steer the LED’s. Typical use is showing: red = no access, green = access. In case of
using IOLAN modules the controller would be of type LA-TCK-2WI-4I-2Y.
using IOLAN modules the controller would be of type LA-TCK-2WI-4I-2Y.
The hardware from the two connections is shown in the next scheme:
330ohm
max 10v
max 30mA
conn. 1
conn. 2/3