Wiring is one of the biggest causes for problems when using the 75A00-2 Access Card Reader. The pinout for the built-in serial ports on Leviton controllers are:

With the above stated, your pinout should be using Pins 4 & 5, where Pin 5 should be connected to the Gray (A) and Pin 4 should be connected to the Orange (B) wires of the reader, as detailed in the picture below:

Once the above has been confirmed, plug the cable into the serial port.

The next useful tip is related to the RS-232/485 jumper below the serial port being used. The jumper below the serial port on the controller must be set to RS-485 (center and right pins on 3-position jumper,

Another tip is related to configuring the reader. Although the reader and cards can be configured using PC Access, Leviton recommends using the controller and console to configure, as this procedure reduces the potential for human error. To properly enroll the reader, perform the following steps from a console:

1. From the Installer Setup menu, press the 7 (EXP) key. Use the [Down Arrow] key to scroll to the appropriate Serial X Function (where X is the number of the serial port being used).
   
2. Press #-1-8-# - the display should now show that the Serial Function is set to type 18 – ACCESS CONTROL.
   
3. Use the [Down Arrow] to scroll to READER 1 ADDRESS.  CRITICAL NOTE:  If the address listed shows anything other than 0.0.0.0, press # (DELETE), and then 1 (YES) – the display should read as
   

      READER 1 ADDRESS:

0.0.0.0                                      #=CFG

1. Press the # (Configure) – the display should read as:
   

        CONFIGURE READER 1

        SWIPE CARD 3 TIMES

1. Go to the Access Control Reader to be enrolled and swipe any HAI Access Control Card or Key Tag 3 times in front of the reader – you should hear/see the following:
   
1. After the first swipe, you should hear a single beep tone.
   
2. After the second swipe, you should hear a single beep tone.
   
3. After the third swipe, you should hear a “longer” single beep tone.
   
4. The display on the console should display:
   

        READER 1 ADDRESS:

        X.X.X.X #=DEL (where the X’s should be populated with the values of    the card reader’s address.

NOTE: You have 3 minutes to complete the operation once the system is put into configuration mode. If a Leviton Access Control Card or Key Tag has not been swiped 3 times within the first 3 minutes, the controller will automatically exit configuration mode.