Vicking electronics
Pag. 6
Magnetic cards
The TIMEMate reads magnetic cards with ISO track 2. (ISO 2 ABA)
Track 2 is 4 bits per character plus a parity bit
The track format is: START(13) data END(15) LRC
One internal reader can be connected.
Proximity cards (RF tags).
You can connect one internal reader and two external readers to the TIMEmate simultaneously.
Readers 2 and 3 have an opto-isolated current loop interface to connect a reader up 50 meter
away from the TIMEmate. The reader must be connected through a doorlock interface. This
doorlock interface gives power to the reader and drives the current loop interface. The doorlock
interface has also 2 relays and a powersupply for AC or DC doorlock coils.
If you close jumper 1,2 and 3 or the power supply board, reader 3 can be connected, for a short
distance, directly to the TIMEmate without a doorlock interface. (see the drawings at the end of
the manual)
Wiegand proximity cards.
You can connect one internal wiegand reader to the TIMEmate.
The data from a wiegand reader is not in the form of readable characters like a mag. stripe cards
or data received though the mag. stripe interface.
Wiegand data is a stream of bits that must be decoded to a decimal card number.
This bit stream is divided into blocks of bits. These blocks need to be converted to a decimal
number, in the example below bit 10 to 25 are used to make the card number.
Because there is no standard in the formatting of wiegand cards the decoding of the card number
takes place in the application program not in the firmware of the TIMEmate.
Example of a typical wiegand card structure.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
P F F F F F F F F C C C C C C C C C C C C C C C C P
P=Parity bits
C=card number 16bits
range 0 - 65536
F=facility code 8bits
range 0 - 255
