GPS-721 User Manual
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GPS-721 User Manual V2.0, Oct. 2010
There will be no response if the command syntax is incorrect,
there is a communication error, or there is no module with the
specified address.
Examples:
Command: ~03M
Response: !0330
Reads the transmission mode of module 03 and
the module returns a valid response. The
response shows that module supports both DCON
and GPS modes. The protocol is DCON mode.
Command: ~03M1
Response: !03
Sets the transmission mode to GPS protocol and
the module returns a valid response.
(This command needs the module to be set to INIT
mode. The new setting will become effective after
the module is reset).
Command: ~03M
Response: !0331
Read the transmission mode of module 03 and the
module returns a valid response. The response
shows that module is in GPS transmission
protocol.
The module needs to be restarted before the new
transmission protocol is effective.
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