User's Manual
FP300RA User Manual
2140-72018-00-0A REV: A Page 11 Of 38
1.4.1.5 Lane Discrimination Support
The FP-300RA lane discrimination function enables detecting on which lane the transponder
entered the communication zone.
The lane discrimination parameters that can be configured include:
• Detection of lane in which a transponder enters or leaves the communication zone
• Search window size
• Minimum number of activation messages that must be received
• Minimum delta (difference between the numbers of activation messages received in
each lane) needed to identify the lane.
1.4.1.6 Support for Reader Synchronization
The FP-300RA supports the master-slave synchronization mode:
• When configured as synchronization master, the FP-300RA outputs
synchronization pulses via its AUX port, at RS-232/422 levels.
• When configured as slave, the FP-300RA synchronizes its air interface to the
synchronization pulses received via its AUX port, at RS-232/422 levels.
While operating in the slave mode, the FP-300RA sends messages reporting loss and regaining
of synchronization through the host and maintenance interfaces.
1.4.1.7 Active List
The FP-300RA maintains a list of transponders that are currently in the FP-300RA
communication zone: this list is the active list, and can include up to 100 transponders. The
FP-300RA will send the active list to the host upon host’s request.
The criteria for adding transponders to the active list are:
• New activation message has been received
• A successful data access is performed with a transponder that is not in the list.
The FP-300RA can check if any transponder is still within its communication zone by self-
initiated data access (ping). Ping reads the transponder internal memory contents. The time
between consecutive pings can be set by commands, or pinging can be disabled altogether.
The criteria for removing a transponder from the active list are:
The transponder failed to respond to an FP-300RA command (auto-function, ping or
host request)
If the ping function is disabled, then:
If the transponder has not been accessed, i.e., it is in the out-of-link state, it
will be removed after a configurable number of frames from the last received
activation message
If the transponder has been accessed, i.e., it is in the link-granted state, it will
be removed 10 seconds after the last access.