Specifications

434
[ 5 ] Check Spread Spectrum Communications Device Syn-
chronization with Master
Using a spread spectrum communications device for TCP/IP communication requires synchro-
nizing with the master (e.g., access point). To check the synchronization, use the extension
library
SS.FN3.
In any of the following cases, a spread spectrum communications device may not be synchro-
nized with the master:
• When a spread spectrum communications device is opened (Opening a spread spectrum
communications device and synchronizing with the master will take a few seconds.)
• When a wireless block tries to synchronize with a new master in roaming.
• When a wireless block is moved out of the radio-wave area with the master.
• When a wireless block is moved to a place where there is any radio-wave obstruction
between the wireless block and the master.
For details about
SS.FN3, refer to Section 17.4, "Spread Spectrum Communication Library
(SS.FN3)."
Given below is a setting example using
SS.FN3.
timeout% = 100 ’Set time (10 sec.) to wait for
’synchronization with master.
call "ss.fn3" .fcSyncInf timeout%, assoc% ’Check synchronization with master.
’(SS.FN3 function #7)
’Returns value in assoc%
if assoc% = -1 then ’If synchronization is not complete,
goto Sync.Err ’go to Sync.Err.
endif