Airmar LB150 - Manual (Page 55)

LB150 WeatherStation Technical Manual revision 0.013
Proprietary and Confidential
PRELIMINARY - DRAFT 52
The $PAMTC,EN,L command allows the settings to be reloaded from EEPROM to
RAM without cycling power to the unit. This can be used to discard any changes made
to the working copy in RAM, and restore the saved settings as though the unit had been
turned off and then back on again.
The $PAMTC,EN,LD command loads the factory default settings from ROM memory
into RAM memory.
Note that the $PAMTC,ERST command (see separate description) differs from the
$PAMTC,EN,LD command in that $PAMTC,ERST will initialize all of user EEPROM
memory to its factory default settings. This includes settings unrelated to the selection of
transmitted sentences.
The above paragraphs are summarized in the below figure.
Working Copy
(RAM)
Saved Copy
(EEPROM)
Factory Defaults
(ROM)
$P
AM
TC
,E
N,L
D
$PAMTC,ERST
$P
AM
TC
,EN
,S
$P
AM
TC
,EN
,L
The $PAMTC,EN,Q command provides a query function to allow reading the current
settings from the working copy in RAM. The reply to the $PAMTC,EN,Q command is a
series of sentences with the following format:
$PAMTR,EN,<1>,<2>,<3>,<4>,<5>*hh<CR><LF>
where
<1> = Total number of $PAMTR,EN sentences in the reply
<2> = Sentence number
<3> = Sentence ID (GGA, GLL, GSA, GSV, HDG, MDA, MWD, MWVR,
MWVT, RMC, VTG, VWR, VWT, or XDR)
<4> = 0 or 1 (0=disabled, 1=enabled)
<5> = Transmission interval (tenths of a second)
For example, a unit programmed with only the factory default settings would provide the
following as a reply to the $PAMTC,EN,Q command: