Rikaline GPS-24 - Manual (Page 18)

GPS Receiver Board GPS-24 / 24A Operating Manual
Rikaline
Specifications subject to change without prior notice
Rikaline International Corp. 10F, 64, Kang-Din Road, Taipei 108, Taiwan
Tel: ++886 2 2370 4688 Fax: ++886 2 2370 4686 E-Mail: [email protected] Web: www.rikaline.com.tw
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 ZX4120 output messages (300,301,302,303,304)
C.7 $PNMRX108, NMEA message sequence
This message is used to set the sequence used to output the NMEA messages. All messages in the list are
set to be output with a default output rate. The messages that are not included are disabled. Once the
sequence is defined, individual settings for the messages can be changed by means of the $PNMRX103
message. 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 $PNMRX108 6 8 PNMRX108 protocol header.
Mask ID Int 3 3 Mask identifier: possibilities are
GGA / GLL / GSA / GSV
RMC / VTG / ZDA
Mask ID Int 3 3 Mask Identifier.
Checksum *xx (0) 3 3 2 digits.
Message
terminator <CR> <LF> 2 2 ASCII 13, ASCII 10.
Examples:
$PNMRX108, GGA, GLL, and GSA*xx: Enables the GGA, GLL and GSA in this sequence, output
Every second. All other messages are disabled
C.7 $PNMRX110, Fix Settings
This message is used to set various settings and masks which control how the software will behave in
relationship to the satellites in view, for example a mask can be set for the minimum satellite elevation,
minimum SNR etc. The message consists of a varying number of fields depending on the number of masks
to be set. Each mask setting consists if a mask identifier and new value pair. The $PNMRX110 message
format is shown below.
PNMRX110 field list
Field Format Min
chars
Max
chars
Notes
Message ID $PNMRX110 6 8 PNMRX110 protocol header.
Mask ID Int 2 2 Mask identifier, see below.
Value Variant 1 8 New value for mask, dependent on the preceding
field, see below.
Mask ID Int 2 2 Mask identifier.
Value Variant 1 8 New value for mask, dependent on the preceding
field.
Checksum *xx (0) 3 3 2 digits.
Message terminator <CR> <LF> 2 2 ASCII 13, ASCII 10.
PNMRX110 Mask Field interpretation
Mask Id mask format width units
0 Local Time Zone Int: unsigned 2:2 Hours : Minutes
1 Maximum PDOP 1 Unsigned 4 x10, [0-100]
2 Maximum HDOP Unsigned 4 x10, [0-100]