u-blox ZED-F9P - Page 50

u-blox ZED-F9P Interface Description - Manual
Advance Information
CFG-DAT continued
Byte Offset Number
Format
Scaling Name Unit Description
0 R8 - majA m Semi-major Axis ( accepted range = 6,300,000.0
to 6,500,000.0 meters ).
8 R8 - flat - 1.0 / Flattening ( accepted range is 0.0 to 500.0
).
16 R4 - dX m X Axis shift at the origin ( accepted range is +/-
5000.0 meters ).
20 R4 - dY m Y Axis shift at the origin ( accepted range is +/-
5000.0 meters ).
24 R4 - dZ m Z Axis shift at the origin ( accepted range is +/-
5000.0 meters ).
28 R4 - rotX s Rotation about the X Axis ( accepted range is
+/- 20.0 milli-arc seconds ).
32 R4 - rotY s Rotation about the Y Axis ( accepted range is
+/- 20.0 milli-arc seconds ).
36 R4 - rotZ s Rotation about the Z Axis ( accepted range is +/-
20.0 milli-arc seconds ).
40 R4 - scale ppm Scale change ( accepted range is 0.0 to 50.0
parts per million ).
5.9.3.2 The currently defined Datum
Message
UBX-CFG-DAT
Description
The currently defined Datum
Firmware
Supported on:
• u-blox 9 with protocol version 27
Type
Get
Comment
This message is deprecated in protocol versions greater than 23.01. Use UBX-CFG-
VALSET, UBX-CFG-VALGET, UBX-CFG-VALDEL instead.
See the Legacy UBX Message Fields Reference for the corresponding configuration item.
Returns the parameters of the currently defined datum. If no user-defined datum has been
set, this will default to WGS84.
Header Class ID Length (Bytes) Payload Checksum
Message Structure
0xB5 0x62 0x06 0x06 52
see below
CK_A CK_B
Payload Contents:
Byte Offset Number
Format
Scaling Name Unit Description
0 U2 - datumNum - Datum Number: 0 = WGS84, 0xFFFF = user-
defined
2 CH[6] - datumName - ASCII String: WGS84 or USER
8 R8 - majA m Semi-major Axis ( accepted range = 6,300,000.0
to 6,500,000.0 meters ).
16 R8 - flat - 1.0 / Flattening ( accepted range is 0.0 to 500.0
).
UBX-18010854 - R04 Advance Information Page 42 of 259