Owner's manual

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ge91
NAV440UserManual
7430‐0131‐01Rev.F
Pa
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RFPayloadContents
ByteOffset mat ling itsName For Sca Un Description
7 field1Data U2 — — ThesecondfieldID’sdataread
… … U2 — — …
numFields*4‐3 field… U2 — — ThelastfieldIDread
numFields*4‐1 field…Data U2 — — ThelastfieldID’sdataread
GetFieldsCommand
Table77GetFields
GetFields(‘GF’=0x4746)
Preamble PacketType Length Payload Termination
0x5555 0x4746 1+numFields*2 <GFData> CRC(U2)><
Thiscommandallowstheusertogettheunit’scurrentconfigurationfields.NumFieldsisthenumberoffieldstoget.
The
field0,field1,etc.arethefieldIDstoget.GFmaybeusedtogetconfiguration,calibration,andalgorithmfields
fromRAM.Multiplealgorithmfieldswillnotnecessarilybefromthesamealgorithmiteration.Ifatleastonefieldis
successfullycollected,theunitwillrespondwithagetfieldsresponsewithdatacontainingthefieldIDsofthe
successfullyreceivedfields.
Ifanyfieldisunabletobereceived,theunitwillrespondwithanerrorresponse.Notethatbothagetfieldsandan
rrorresponsemaybereceivedastheresultofagetfieldscommand.
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Table78GetFieldsPayloadContents
GFPayloadContents
ByteOffset Name Format Scaling Units Description
0 numFields U1 — — Thenumberoffieldstoget
1 field0 U2 — — ThefirstfieldIDtoget
3 field1 U2 — — ThesecondfieldIDtoget
… … U2 — — MorefieldIDstoget
numFields*2–
1
Field… U2 — — ThelastfieldIDtoget
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GetFieldsResponse
Table79GetFieldsResponse
GetFields(‘GF’=0x4746)
Preamble PacketType Length Payload Termination
0x5555 0x4746 1+numFields*4 <GFData> <CRC(U2)>
Theunitwillsendthispacketinresponsetoagetfieldsrequestifthecommandhascompletedwithouterrors.