Wiegand Readers
Installation Guide
26
CSI Readers
One of the interface difficulties associated with the use of the Wiegand cards revolves
around the differences in the card encoding styles A and A1 and the associated right-
hand and left-hand insertion readers. The standard A1 card used for swipe readers
reverses the bit pattern when used in an insertion reader (style A1). This causes the least
significant bit (LSB) to be read first instead of the most significant bit (MSB).
Only the MSB-first sequence is supported when using the 66-bit Wiegand data format.
When reading 26- or 32-bit Wiegand data format, CSI readers automatically detect the
data direction and adjust the decoding of the contents as required. This detection is
based on the examination of the Wiegand bit pattern and does not require any action on
your part.
General Wiegand Reader Field Output Installation
The wires from the reader connect to 24 AWG (0.206 mm
2
), shielded, twisted-pair cable
that goes to the DPU. This cable connects to the DPU in one of the following ways:
✦
When connecting the reader to a DPU-7920 series controller, the cable from the
reader can be connected directly to TB3 or TB4 on the DPU.
✦
When connecting the reader to any DPU other than the 7920-series controller, the
cable from the reader connects to a CSI breakout box (BRKBOX1 or BRKBOX2).
The breakout box then connects to the DPU reader ports (1A, 2A, 1B, or 2B) using
an RJ45 CSI modular reader cable (CBL063).
With I/NET 2000 versions 2.x and later, DPU-7910A and DPU-7920 series controllers
with firmware version 2.20 or later also support the use of the 66-bit Wiegand reader.
These controllers also support the combination of a 66-bit Wiegand reader along with
an ESSEX PIN pad. Installation instructions for this configuration are described
following the basic reader installation instructions.
Connecting the 26-/32-Bit Wiegand Reader
There are five different models of 26-/32-bit Wiegand readers provided by CSI. All use
the same field output installation steps. These readers are detailed in
.
Use the following steps to connect the field output cables to the CSI breakout box, or
directly to the DPU-7920 at TB3 or TB4 (see
1.
Connect the white wire (DATA 1) to terminal 3.
2.
Connect the red wire (+5 V) to terminal 4.
3.
Connect the green wire (DATA 0) to terminal 5.
Table 7. Wiegand Reader Models
Model Number
Type of Reader
WK11
Insertion Type Key Reader, Red LED
WC11
Insertion Type Card Reader, Red LED
WS11
Swipe Type Card Reader, Red LED, Indoor
WS21
Swipe Type Card Reader, Red LED, Outdoor
WT11
Turnstile Type Card Reader, Red LED
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