Appendix H
PPS Output Notify Message Format
With GS25, a message can be created. This message informs about the output
of a PPS pulse. The message can be in ASCII or in binary format. It is sent to a
connected device, for example a PC.
The message is sent at least 0.5 s before the next pulse. For this reason, notify
messages are sent when the PPS output rate is greater than 1 s.
Refer to "18.11 PPS output" for configuring the PPS output interface.
In binary, the notification message format is Leica Binary v2. Documentation
for LB2 is available on request from the Leica Geosystems representative.
$PLEIR,HPT,sssssssss,nnnn*hh<CR><LF>
Field
Description
$PLEIR
Header
HPT
Message identifier,
H
igh
P
riority
T
ime
sssssssss
GPS time of week of next PPS output in ms
nnnn
GPS week number
*hh
Checksum
<CR>
Carriage return
<LF>
Line feed
$PLEIR,HPT,134210000,1203*17
Description
Syntax in binary for-
mat
Syntax in ASCII
Description of the
fields
Example
PPS Output Notify Message Format
1035
