User's Manual

ACG HF Multi ISO RFID Reader V1.0
ACG Identification Technologies GmbH 67
12.4.3.5.2 Binary Protocol Version 2
This command never sends version 2 binary frames.
12.4.3.6 High speed select
This command selects a card in the antenna field (according to the selection criteria)
or prepares a multiselect command, switches to high baud rates and enables 256-
byte frames. If execution is successful, the command returns the UID of the selected
card and the used baud rate. The reader automatically detects the maximum frame
size of the card. The reader also tries to communicate to the transponder with the
specified baud rate. If no communication is possible, the reader will automatically
decrease the speed to the next lower value.
This command can also force the reader to the communication speed and frame size
of the tag to the specified values. This is only needed if the high speed select is done
manually with the transfer command.
Command
Command Data
‘h’ Option byte (1 byte)
00h … select a single card with 106kBaud
02h … select a single card with 212kBaud
04h … select a single card with 424kBaud
08h … select a single card with 848kBaud
10h … prepare next multiselect for 106kbaud
12h … prepare next multiselect for 212kbaud
14h … prepare next multiselect for 424kbaud
18h … prepare next multiselect for 848kbaud
20h … forces reader to 106kBaud
22h … forces reader to 212kBaud
24h … forces reader to 424kBaud
28h … forces reader to 848kBaud
30h – 38h … force tag frame size