User's Manual Part 1

13,56 MHz Multitag Reader Module, Version 0.9v
ACG Identification Technologies AT Page 40
5.3.19.2.1 ASCII mode
The station ID has only effect in binary mode.
5.3.19.3 Time slotted answer
In party line mode more than one reader can be used simultaneously. The time
slotted answer allows a separation of all connected devices. The station ID is used to
determine the correct time slot.
The reader supports up to 254 unique time slots. Following formula allows calculating
the needed time of one time slot. Only one baud rate on the same party line is
supported.
6*
10
][
0
B
audrate
sT =
Figure 5-25: Time slot formula
Following figure shows a timing diagram of time slotted answers.
timeslot 0 1 2 3 4 5 252 253 254
T
0
T
1
T
2
T
3
T
4
T
5
T
253
T
254
T
255
HOST
‘g’ →
reader (01)
←
01
reader (03)
←
03
reader (04)
←
04
reader (254)
←
254
Figure 5-26: Timing diagram of time slotted answers