Remote Commands - Comtech EF Data CDM-570 Installation And Operation Manual

CDM-570/570L Satellite Modem with Optional IP Module
Appendix J
J.3

Remote Commands

For more information about using remote commands and queries, see
Appendix D. REMOTE CONTROL).
Several remote commands are available to enable the GPS Mode and retrieve GPS information.
These commands are for the SLAVE modem ONLY, which means the address field must be the
address of the Slave unit (e.g., 0021).
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Note: When the GPS mode is enabled, the SLAVE modem's serial's Baud Rate is changed to 4800
to receive data from GP-320B. To go back to normal serial operation mode, disable the GPS Mode.
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Example capture of the remote commands:
<0021/GPS?
>0021/GPS=0[cr][lf]
<0021/GPS=1
>0021/GPS=[cr][lf]
<0021/DTM?
>0021/DTM=$GPDTM,W84,,00.0000,N,00.0000,W,,W84*53[cr][lf]
<0021/GGA?
>0021/GGA=$GPGGA,222830,3325.4268,N,11158.2640,W,0,01,00.00,000293.6,M,-
026.2,M,,*7F[cr][lf]
<0021/ZDA?
>0021/ZDA=$GPZDA,223145,14,10,2005,+00,00*63[cr][lf]
<0021/GLL?
>0021/GLL=$GPGLL,3325.4268,N,11158.2640,W,222830,V,N*47[cr][lf]
<0021/VTG?
>0021/VTG=$GPVTG,,T,,M,,N,,K,N*2C[cr][lf]
<0021/RMC?
>0021/RMC=$GPRMC,222830,V,3325.4268,N,11158.2640,W,,,141005,011.8,E,N*12[cr][lf]
<0021/GPS=0
>0021/GPS=[cr][lf]
<0021/RMC?
>0021/RMC*[cr][lf]
GPS – GPS Mode, Query and Command
0 = Disabled
1 = Enabled
DTM? – Retrieve GPDTM data sentence
GGA? – Retrieve GPGGA data sentence
ZDA? – Retrieve GPZDA data sentence
GLL? – Retrieve GPGLL data sentence
VTG? – Retrieve GPVTG data sentence
RMC? – Retrieve GPRMC data sentence
queries current GPS status
SLAVE responds that GPS is disabled
SLAVE is commanded to enable GPS
SLAVE confirms that GPS is enabled
SLAVE is commanded to return GPDTM data sentence
SLAVE is commanded to disable GPS
SLAVE confirms that GPS is disabled
SLAVE is commanded to return GPRMC data sentence
SLAVE responds that data is not available
J–2
Revision 12
MN/CDM570L.IOM