Instruction Manual

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GNAV540UserManual
7430‐0808‐01Rev.B
Page93
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WFPayloadContents
ByteOffset Name Format Scaling Units Description
1 field0 U2 — — ThefirstfieldIDwritten
3 field1 U2 — — ThesecondfieldIDwritten
… … U2 — — MorefieldIDswritten
numFields*2–1 Field… U2 — — ThelastfieldIDwritten
TableRFCommandReadFieldsCommand
ReadFields(‘RF’=0x5246)
Preamble PacketType Length  Payload Termination
0x5555 0x5246 1+numFields*2 <RFpayload> <CRC(U2)>
Thiscommandallowstheusertoreadthedefaultpower‐upconfigurationfieldsfromtheEEPROM.NumFieldsisthe
numberoffieldstoread.The
field0,field1,etc.arethefieldIDstoread.RFmaybeusedtoreadconfigurationand
ds
calibrationfieldsfromtheEEPROM.Ifatleastonefieldissuccessfullyread,theunitwillrespondwithareadfiel
responsecontainingthefieldIDsanddatafromthesuccessfullyreadfields.
Ifanyfieldisunabletoberead,theunitwillrespondwithanerrorresponse.Notethatbothareadfieldsandan
errorresponsemaybereceivedasaresultofareadfieldscommand.
Table70RFPayload
RFPayloadContents
ByteOffset Name Format Scaling Units Description
0 numFields U1 — — Thenumberoffieldstoread
1 field0 U2 — — ThefirstfieldIDtoread
3 field1 U2 — — ThesecondfieldIDtoread
… … U2 — — MorefieldIDstoread
numFields*2‐1 Field… U2 — — ThelastfieldIDtoread
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ReadFieldsResponse
Table71RFResponse
ReadFields(‘RF’=0x5246)
Preamble PacketType Length  Payload Termination
0x5555 0x5246 1+numFields*4 <RFpayload> <CRC(U2)>
Theunitwillsendthispacketinresponsetoareadfieldsrequestifthecommandhascompletedwithouterrors.
Table72RFPayload
RFPayloadContents