R
EM4223
Command : Next_Slot
Initial State
Ready
Criteria
Action
New State
Ready
Quiet
None
None
None
None
Quiet
Round_Active
Tag has answered in previous slot, AND
Signature matches AND 1st low pulse of
Next_Slot command was received in the
acknowledgement time window.
None
Quiet
Tag is in ISO Mode and has NOT
answered in previous slot, OR Signature
does not match OR 1st low pulse of
Next_Slot command was not received in
the acknowledgement time window.
Tag is in FST Mode and has NOT
answered in previous slot, OR Signature
does not match OR 1st low pulse of
Next_Slot command was not received in
the acknowledgement time window.
ISO Mode
The tag shall increment its slot counter
and send its response if slot counter
matches the chosen slot.
Round_Active
The tag will automatically increment is
Current Slot Counter at internally
determined times and send its response
if the its Current Slot Counter matches its
Selected Slot Register.
The tag shall increment its slot counter
and send its response if slot counter
matches the chosen slot.
The tag resumes the FST Arbitration
process and will automatically increment
is Current Slot Counter at internally
determined times and send its response
if the its Current Slot Counter matches its
Selected Slot Register.
Round_Active
Round_Standby
Round_active
Round_active
FST Mode
Table 12 - Tag state transitions for Next_Slot
Command : Close_slot
Initial State
Ready
Criteria
Action
New State
Ready
Quiet
None
None
None
None
Quiet
Round_Active
ISO Mode
FST Mode
The tag shall increment its slot counter
and send its response if slot counter
matches the chosen slot.
The tag will automatically increment is
Current Slot Counter at internally
determined times and send its response
if the its Current Slot Counter matches its
Selected Slot Register.
Round_Active
Round_Active
Round_Standby
ISO Mode
FST Mode
The tag shall increment its slot counter
and send its response if slot counter
matches the chosen slot.
The tag resumes the FST Arbitration
process and will automatically increment
is Current Slot Counter at internally
determined times and send its response
if the its Current Slot Counter matches its
Selected Slot Register.
Round_active
Round_active
Table 13 - Tag state transitions for Close_Slot
Command : Reset_To_Ready
Initial State
Ready
Quiet
Round_Active
Criteria
Action
New State
Ready
Ready
None
None
None
None
None
None
Ready
Round_Standby
None
None
Ready
Table 14 - Tag state transitions for Reset_To_Ready
13
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