User`s guide

Chapter 5 - I/O Commands

POSITION LOCK PARAMETERS MESSAGE (@@AM)

Motorola Binary Format

Query current Position Lock Parameters:

@@AMxxxxC<CR><LF>

where:

xxxx = 4 out of range bytes, all 0xFF

C = 0x0C

Message length: 11 bytes

Complete hex string to query current Position Lock Parameters:

0x40 40 41 4D FF FF FF FF 0C 0D 0A

Change current Position Lock Parameters:

@@AMifddC<CR><LF>

where:

i = integer part of speed threshold 0..255 m/s (0x00 .. 0xFF)

f = fractional part of speed threshold 0..99 cm/s (0x00 .. 0x63)

dd = distance threshold 0..65535 m (0x00 00 .. 0xFF FF)

C = checksum

Message length: 11 bytes

Response to either command:

@@AMifddC<CR><LF>

where:

i = integer part of speed threshold 0..255 m/s (0x00 .. 0xFF)

f = fractional part of speed threshold 0..99 cm/s (0x00 .. 0x63)

dd = distance threshold 0..65535 m

(0x00 0x00 .. 0xFF 0xFF)

C = checksum

Message length: 11 bytes

Motorola GPS Products - M12+ User's Guide Revision 6.X 09FEB05