TransCore SmartPass AI1611, System Manual

Page: 168 / 179

Commands
Reader message:
Done or Error
690N Select Presence Without Tag Report Option
These commands select the presence without tag reporting option. If enabled
(command 6901), input reports are transmitted when a presence is detected without
the subsequent acquisition of a valid tag. The values for
N
specify reporting as
follows:
Table 9-16 Select Presence Without Tag Report Option Commands
Command Report Option
6900 Disable presence without tag reports
(factory default)
6901 Enable presence without tag reports
Reader message:
Done
Refer to Chapter 8, “Communication Protocols,” for message format information.
692N Select RF Control Algorithm
These commands select the algorithm for turning RF power off when RF-by-input
control is enabled (command 641). The values for
N
specify the RF control
algorithm as follows:
Table 9-17 Select RF Control Algorithm Commands
Command RF Power Off
6920 On timeout only
6921 Timeout or tag ID acquired
6922 Timeout or presence false (factory default)
Command 6920 turns off RF power based on the timeout established by command
693N.
Command 6921 allows RF power to be turned off either after the timeout period or
upon acquisition of a valid tag ID, whichever occurs first.
Command 6922 turns off RF power either after the timeout period or upon the
presence false condition, whichever occurs first.
Reader message:
Done
693N Select RF Timeout Period
Command 693N selects the RF timeout period used by RF control algorithm
command 692N. Values for
N
range from 0 (always expired) to E (752 ms).
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