Read fields (‘rf’ = 0x5246), Preamble, Packet type – Moog Crossbow GNAV540 User Manual
Page 93: Length, Payload, Termination, Rf payload contents, Byte offset, Name, Format

GNAV540 User Manual
7430‐0808‐01 Rev. B
Page 93
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
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