Specifications

© 2010 Cypress Solutions Complete Manual: CTM-15X Firmware 1.3.0
Open CTM (Revision D)
159
Report Messages
Example:
$GPGSA,A,1,11,11,20,23,32,16,00,00,00,00,00,00,03.1,02.4,02.0*03
9.11 Message Type 85, ULCP binary position message with GPS
coordinates
Header: 0x55 0xSS 0x06 0x00 0x00 0x18 0x0000
Message body:
Hex
Description
4 bytes
Normalized latitude (RMC latitude x 100,000)
4 bytes
Normalized longitude (RMC longitude x 100,000)
2 bytes
Speed in knots
2 bytes
Heading
1 byte
GPS data validity: 0x”A” = valid; 0x”V” = invalid; 0x”B” = buffered valid; 0x”W” =
buffered invalid.
1 byte
Number of satellites used for position fix
1 byte
Position type (from GGA message)
1 byte
Digital input state (0= off, 1=on): bit 0 = input #1, bit 1 = input #2... bit 5 = input #6,
bit 6 = Not used, bit 7 = ignition status.
2 bytes
Altitude in meters
2 bytes
Differential correction age (only valid if differential correction being used)
4 bytes
Time (based on number of seconds since 00:00:00 January 1st 1970
Note: ULCP binary messages should not be used for local serial report mode 1 and 2 in applications where
timed message delivery is critical.
9.12 Message Type 88, ULCP message with Acceleration/Deceleration and
GPS information
Header: 0x58 0xSS 0x06 0x00 0x00 0xNN 0x0000
Where NN is the message length range 0x13 to 0x1D - dependent on the Modem ID string length.
Message body: