Commands
7-31
viate interference issues in dense populations of Interagency Group (IAG) readers.
The
values are set with commands #648NN and #649NN.
Reader Response:
SYNC T<00 to FF> H<00 to 0A>
Where T is the number of milliseconds (ms) before the rea
der sends a synchronization
pulse to all other readers on the RS–485 bus and H is the number of milliseconds that
the reader holds off starting IAG tag protocol once it receives the synchronization
pulse.
Reader Control Functions — Command Group 6
Group 6 commands set reader control functions such as reader ID, communication
protocol, output pulse, and RF control.
60NN Set Reader ID Number
Command #60NN sets the reader ID that will be sent in the auxiliary data field (com-
mand #311).
Uppercase or lowercase characters are allowed for NN; for example, hex
digits A though F or a through f
where NN = 00 to FF (hex for
0 to 255, factory default = 00).
Reader response:
Done
610 Select Basic Communication Protocol (Factory Default)
Command #610 enables the basic communications protocol. Refer to “Basic Proto-
col” on page 6-4 for more information.
Reader response:
Done
611 Select Error Correcting Protocol
Command #611 enables the error correcting protocol. Refer to “Error Correcting Pro-
tocol” on page 6-4 for more information.
Reader response:
Done
Caution
Do not switch to ECP (command #611 Select Error Correcting Protocol) unless
the host is prepared to acknowledge each reader transmission.
612NN Select Error Correcting Protocol Timeout
Command #612NN selects the timeout interval for ECP. This timeout applies to the
transmission of tag, report, and error messages and to the receipt of host commands.
The transmit timeout is initiated immediately after the end-of-message sequence CR/
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