31
May ’00
Chapter 2. Commands
PC --> Reader:
1
Reader --> PC:
1 <CR><LF>
Command acknowledgment
When the command is acknowledged the TIRIS reader has been switched into the
Multipage Transponder mode and is now ready to accept further command charac-
ters as described in sections 2.5.1 to 2.5.5.
2.5.1
EXECUTE Command
If the command X is immediately followed by a page number (in the range 01 to 11)
the system reads the specified page as described in section 2.5.1.1. If the command
X is immediately followed by the letter M the system is switched into Multiplexer
mode as described in section 2.5.1.2.
2.5.1.1
Execute Command
The ASCII character X and a subsequent two digit page information, specifying the
corresponding MPT page (01 to 11
hex
) to be read, switch the TIRIS reader to a single
readout mode and trigger one readout sequence. This command can also be used
to stop (terminate) the continuous read modes (LINE or NORMAL). After receiving
the character X the TIRIS reader echoes X and waits for the page specification. After
receiving the page specification the TIRIS reader proceeds with the EXECUTE com-
mand.
If no valid identification number could be received, the TIRIS reader transmits the an-
tenna number, an optional ' 11 ' (invalid), carriage return with line feed.
If an MPT transponder was read, the MULTIPAGE TRANSPONDER PROTOCOL,
that is: antenna number, status information, the transponder type character (M),
space, transponder page read, space, application code, space, identification
code, carriage return and line feed, will be transmitted to the PC.
If a RO or R/W was read, the TIRIS reader will transmit the 64-Bit PROTOCOL, that
is: antenna number, transponder type character (R, W), space, application
code, space, identification code, carriage return and line feed.
Note:
RO and R/W transponders can also be read when the TIRIS reader is
operating in the MPT mode. If a RO or R/W is read when the TIRIS
reader is in K1 (MPT) mode, an additional character (antenna charac-
ter) is transferred via the serial port immediately before the trans-
ponder type character (R or W).
Note:
Page specification 00 does not refer to an addressed page number
00, but just causes the TIRIS reader to send a charge-up signal. This
causes a simple read-out of the first page (01) of an MPT, or a read-
out of a RO or R/W. Therefore if you only want to read page 01 of an
MPT you achieve a faster reading cycle time by specifying page 00.