5.11 Programming a reader for reverse mode transmission
To provide backwards compatibility to V1.08, V1.09, and V1.12 Mullion readers, you can program the
reader for Reverse mode transmission.
1. Remove the Base of the reader from the Front of the reader.
2. Power down the reader if connected.
3. Connect the Green to the Tamper connection.
4. Place Jumper 2 in the lower position.
5. Remove Jumper 1.
6. Power up the reader.
The reader beeps the affirmation tone and the green indication LED flashes. The reader is now in
VR firmware 1.X Wiegand compatible mode.
7. Power down the reader.
8. Disconnect the Green from the Tamper connection.
9. Place Jumper 2 in the appropriate position for the number of Weigand bits.
For 32 Bit Wiegand, place Jumper 2 in the upper position.
For 56 Bit Wiegand, place Jumper 2 in the lower position.
For 26 Bit Wiegand you must re-progamme the reader into 26 Bit mode.
10. Continue with the installation.
5.11.1 Reverting to standard mode Wiegand
To return the reader to the standard data sequence for Wiegand, follow the steps below:
1. Remove the Base of the reader from the Front of the reader.
2. Power down the reader if connected.
3. Connect the Green to the Tamper connection.
4. Remove Jumper 1 and Jumper 2.
5. Power up the reader.
The reader beeps the affirmation tone and the green indication LED flashes. The reader is now in
standard mode.
6. Power down the reader.
7. Disconnect the Green input from the Tamper connection.
8. Place Jumper 2 in the appropriate position for the number of Weigand bits.
For 32 Bit Wiegand, place Jumper 2 in the upper position.
For 56 Bit Wiegand, place Jumper 2 in the lower position.
For 37 Bit Wiegand , remove Jumper 2.
9. Continue with the installation.
5.12 Programming a Reverse mode transmission reader for 26 Bit
Wiegand
The reader may programmed into 26 Bit Wiegand mode as follows;
1. Connect Red input to the Tamper
2. Put J2 in the lower position.
© Vanderbilt 2021
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A-100410-d
12.02.2021
Mullion Reader VR20 VR50 – Installation Manual
Mounting and connecting
