Multitech MTR-C2 Dokumentacja Pobierz pdf (Strona 19)

INTRODUCTION



19 ATCommandsforHSPA‐H5Modems



Numericform Verboseform

11 CONNECT4800.

12 CONNECT9600.

15 CONNECT14400.

23 CONNECT1200/75.

CommandResponseTim e‐Out

Ifresponsecodesareenabled,whichisthedefaultsetting,theneverycommandissuedtothemodulereturnsa

resultresponse.

Thetimeneededtoprocessthegivencommandand returntheresponsevaries,dependingonthecommandtype.

CommandsthatdonotinteractwiththeSIMorthenetwork,and

onlyinvolveinternalsetupsorreadings,havean

immediateresponse.

CommandsthatinteractwiththeSIMorthenetworkcantakemanysecondstosendaresponse,dependingon:

 SIMconfiguration—forexample,numberofcontactsstoredinthephonebook,numberofstoredSMS.

 Thenetworkthecomma ndmayinteractwith.

CommandIssuingTiming

ThechainCommand‐>Responseisalwaysrespected.Youmaynotissueanewcommanduntilthemodule

finishessendingallofitsresponseresultcodes.

Thisappliesespeciallytoapplicationsthat“sense”theOKtextandthereforemaysendthenextcommandbefore

thecompletecode<CR><LF>OK<CR><LF>issentby

themodule.

Itisrecommendedtowaitforatleast20msbetweentheendofthereceptionoftheresponseand theissueofthe

nextATcommand.

Iftheresponsecodesaredisabled,andassuch,themoduledoes notreportresponsestothecommand,thenthe

20mspause

timeisrespected.

Duringcommandmode,duetohardwarelimitations,undersevereCPUloadtheserialportcanlosesome

charactersifplacedinautobaudingathighspeeds.Thereforeifyouencounterthisproblemfixthebaudratewith

+IPRcommand.Theflowcontrolincommandmodeisenabled.

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 329 330

Brak uwag

Multitech MTR-C2 Dokumentacja Strona 19