Novatel OM-20000041 用户手册
C
Commands Summary
MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1
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C COMMANDS
SUMMARY
ACCEPT
The
ACCEPT
command controls the processing of input data and is primarily used to set the GPSCard’s
COM
port
command interpreter for acceptance of various data formats. Each port can be controlled to allow ASCII command
processing (default), binary differential data processing, or the command interpreter can be turned off.
processing (default), binary differential data processing, or the command interpreter can be turned off.
The command interpreter automatically distinguishes between ASCII commands and certain NovAtel-format
ASCII and binary logs without receiving an
ASCII and binary logs without receiving an
ACCEPT
command.
MiLLennium GPSCards will by default interpret $RTCM59A corrections, and will interpret RTCM59 if
ACCEPT
RTCM
has been entered.
On certain GPSCards the ACCEPT port COMMANDS mode will by default accept, interpret, and process these
data messages: $PVAA, PVAB, $REPA, REPB, $RTCM1A, $RTCAA, $RTCM3A, $RTCM9A, $RTCM16A,
$TM1A and TM1B, without any other initialization required.
data messages: $PVAA, PVAB, $REPA, REPB, $RTCM1A, $RTCAA, $RTCM3A, $RTCM9A, $RTCM16A,
$TM1A and TM1B, without any other initialization required.
The command interpreter can process some NovAtel-format binary logs (which have a proprietary header) or
ASCII logs without receiving an
ASCII logs without receiving an
ACCEPT
command. Therefore, the
ACCEPT
command is needed only for the
RTCA, RTCM and CMR logs. When using
ACCEPT
RTCM
, the interpretation of the RTCM data will follow the
rules defined by the
RTCMRULE
command (see Chapter 4, Message Formats, Page 45). In the default processing
mode (ACCEPT port COMMANDS), input ASCII data received by the specified port will be interpreted and
processed as a valid GPSCard command. If the input data cannot be interpreted as a valid GPSCard command, an
error message will be echoed from that port (if the command
processed as a valid GPSCard command. If the input data cannot be interpreted as a valid GPSCard command, an
error message will be echoed from that port (if the command
MESSAGES
is “ON”). When valid data is accepted
and interpreted by the port, it will be processed and acknowledged by echoing the port prompt (with the exception
of
of
VERSION
and
HELP
commands, which reply with data before the prompt).
In the binary differential data processing modes, (ACCEPT port RTCA/RTCM/CMR), only the applicable data
types specified will be interpreted and processed by the specified COM port; no other data will be interpreted. It
is important to note that only one out of two COM ports can be specified to accept binary differential correction
data. Both ports cannot be set to accept differential data at the same time.
types specified will be interpreted and processed by the specified COM port; no other data will be interpreted. It
is important to note that only one out of two COM ports can be specified to accept binary differential correction
data. Both ports cannot be set to accept differential data at the same time.
When ACCEPT port NONE is set, the specified port will be disabled from interpreting any input data. Therefore,
no commands or differential corrections will be decoded by the specified port. However, data can still be logged
out from the port, and data can be input to the port for formatting into Pass-Through logs (see Chapter 5, Page
45). If the GPSCard operator wants to time-tag non-GPS messages as a Pass-Through log, it is recommended that
the port accepting the Pass-Through data be set to “NONE”. This will prevent the accepting GPSCard COM port
from echoing error messages in response to receipt of unrecognized data. If you do not wish to disable the
command interpreter, and do want to disable message error reporting, see the
no commands or differential corrections will be decoded by the specified port. However, data can still be logged
out from the port, and data can be input to the port for formatting into Pass-Through logs (see Chapter 5, Page
45). If the GPSCard operator wants to time-tag non-GPS messages as a Pass-Through log, it is recommended that
the port accepting the Pass-Through data be set to “NONE”. This will prevent the accepting GPSCard COM port
from echoing error messages in response to receipt of unrecognized data. If you do not wish to disable the
command interpreter, and do want to disable message error reporting, see the
MESSAGES
command, Appendix C,
The GPSCard user can monitor the differential data link as well as the data decoding process by utilizing the
CDSA/B logs. See the CDSA/B log, Appendix D, Page 144 for more information on data link monitoring.
CDSA/B logs. See the CDSA/B log, Appendix D, Page 144 for more information on data link monitoring.
C
COMMANDS SUMMARY