2N Helios IP Configuration Manual page 64

Allowed card types - select one or more card types to be accepted. If no
selection is made, all types of supported cards are accepted.
Interface mode – enable the Wiegand function and set Wiegand IN/OUT. The
IDs of the cards tapped on the internal card reader are always resent to Wiegand
OUT.
Received code format - select one or more message formats to be received via
the Wiegand interface. If no selection is made, all supported message formats
are accepted.
Transmitted code format – set the sent message format: 26-bit, 32-bit, 37-bit
or RAW.
0
E
Note
®
2N TELEKOMUNIKACE a.s., www.2n.cz
26-bit message format (HID26)
Bits are sent to the Wiegand interface from the left to the right
1 2 3 4
F F F F
E - Even parity, it is counted from bits 1 - 12
O - Odd parity, it is counted from bits 13 - 24
F - Facility code
C - Card code
37-bit message is modified according to the interface specification -
received and transmitted ID may differ.
5 6 7 8
F F F F
9 10 11 12
C C C C
13 14 15
C C C
64