Users manual
Appendix A
Revision #:
A
Date:
07-14-15
Page
40
of
58
8
Proprietary NMEA Output Sentences
This sentence is a protocol only for our company. It starts from “$PERD” which shows that it is an
original sentence.
ACK
–
Output the Command Reception Check Format:
1
2
Num
Contents
Range
Default
Remark
1
command
-
-
First field of received command
2
sequence
-1 to 255
0
The number of times successful for the reception.
It is added 1 whenever it succeeds in command
reception, and 0 to 255 is repeated. When
command reception is failed, -1 is returned.
3
subcommand
-
-
Second token of input command
Example:
$PERDACK,PERDAPI,-1,PPS*72
PERDAPI,PPS command input is failed.
Notes:
- As for the command, check sum must be effective before ACK is sent.
$PERDACK , command , sequence , subcommand *hh <CR> <LF>
