18
$PNMRX107, Messages rate control
This message is sent to set the automatic update rate, and to configure which messages will be
automatically output, it is also sent from the node to report which messages are currently
configured for automatic transmission. The $PNMRX107 message format is shown below. This
message can be used to enable and disable multiple messages by including up to 4 message codes
and associated fields in each $PNMRX107 message.
The message length is limited to 80 characters, in the event that the message length would
exceed 80 characters it is divided into 2 messages. This message is supported also in a variable
length format, where only the necessary fields are used.
Field
Format
Min chars
Max chars
Notes
Message ID
$PNMRX107
8
8
PNMRX107 protocol header.
Determines which message is being configured.
Message code
Char
3
3
300
PNMRX300 Almanac Data
301
PNMRX301 Ephemeris Data
302
PNMRX302 lonospheric corrections
303
PNMRX303 UTC Time
304
PNMRX304 GPS constellation health
ALL Applies to all messages
Mode
Int
1
1
0
Disable message
1
Send message now
2
Send message on change
3
Send message now and on change
Checksum
*xx
(0) 3
3
2 digits.
Message terminator
<CR> <LF>
2
2
ASCII 13, ASCII 10.
Examples:
$PNMRX107,300,1*xx :
Output the almanac stored in NVRAM
$PNMRX107,301,2*xx :
Output Ephemeris will be output on change
$PNMRX107,ALL,2*xx :
Output all output messages (300,301,302,303,304)
