User's Manual

OPERATION 5
37
HF80 Transponder Reader – HSMS, Release 1.3
5.5 HSMS Implementation
HSMS defines the procedure for all messages exchanges between
entities across the TCP/IP. The HSMS Connection State Diagram - The
HSMS state machine is illustrated in the diagram below. The behavior
described in this diagram defines the basic requirements of HSMS:
State Description:
A - NOT CONNECTED
The entity is ready to listen for or initiate TCP/IP connections, but
either has not yet established any connections or all previously
established TCP/IP connections have been terminated.
CONNECTED
A TCP/IP connection has been established. This state has two
substates, NOT SELECTED and SELECTED.
B - NOT SELECTED
A sub state of CONNECTED in which no HSMS session has been
established or any previously established HSMS session has ended.
C - SELECTED
A sub state of CONNECTED in which at least one HSMS session has
been established. This is the normal "operating" state of HSMS: data
messages may be exchanged in this state.
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6
2
3
4
5
A
BI
C
connected