u-blox ZED-F9P Interface Description - Manual
Advance Information
5.12 UBX-MGA (0x13)
Multiple GNSS Assistance Messages: i.e. Assistance data for various GNSS.
Messages in the MGA class are used for GNSS aiding information from and to the receiver.
5.12.1 UBX-MGA-ACK (0x13 0x60)
5.12.1.1 UBX-MGA-ACK-DATA0
Message
UBX-MGA-ACK-DATA0
Description
Multiple GNSS Acknowledge message
Firmware
Supported on:
• u-blox 9 with protocol version 27
Type
Output
Comment
This message is sent by a u-blox receiver to acknowledge the receipt of an assistance
message. Acknowledgments are enabled by setting the ackAiding parameter in the UBX-
CFG-NAVX5 message. See the description of flow control for details.
Header Class ID Length (Bytes) Payload Checksum
Message Structure
0xB5 0x62 0x13 0x60 8
see below
CK_A CK_B
Payload Contents:
Byte Offset Number
Format
Scaling Name Unit Description
0 U1 - type - Type of acknowledgment:
0: The message was not used by the receiver
(see infoCode field for an indication of why)
1: The message was accepted for use by the
receiver (the infoCode field will be 0)
1 U1 - version - Message version (0x00 for this version)
2 U1 - infoCode - Provides greater information on what the
receiver chose to do with the message contents:
0: The receiver accepted the data
1: The receiver doesn't know the time so can't
use the data (To resolve this a UBX-MGA-INI-
TIME_UTC message should be supplied first)
2: The message version is not supported by the
receiver
3: The message size does not match the
message version
4: The message data could not be stored to the
database
5: The receiver is not ready to use the message
data
6: The message type is unknown
3 U1 - msgId - UBX message ID of the ack'ed message
4 U1[4] - msgPayloadSta
rt
- The first 4 bytes of the ack'ed message's
payload
UBX-18010854 - R04 Advance Information Page 101 of 259
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