MSB780(X) - User’s Guide
A service request is issued by the sensor after an M, MC, or V command, when it has finished
its measurement. After receiving the service request or after specified time elapses, the data
recorder issues aD0! command to get the measured data:
0D0!<cr>0+1009.066+1009.066+1021.121<cr><lf>
The output data is +pressure+QFE pressure+QNH pressure.
The units of the quantities can be set using serial port, or service port, see command unit on
page 45.
8.9 aM1! Start Measurement Command, return also HQFE, HQNH
This command behaves similarly to the previous command, but it will return also HQFE and
HQNH parameters at the end of the aD0! response.
Example:
0M1!<cr>00075<cr><lf>
When the measurement is ready, the device returns service request:
0<cr><lf>
Send the send data command:
0D0!<cr>
0+985.937+986.281+992.741+3.00+55.00<cr><lf>
The last two parameters are HQFE [m] and HQNH [m].
8.10 aD0! Send Data Command
This command is used to get data from the sensor. MSB780 does not distinguish between D0,
D1 etc.
8.11 aR0! Continuous Measurement (basic units)
This command returns last measured value of pressure. (Pressure is measured periodically,
new data is available each measurement period, see Parameters of sensor)
The output message format is “pressure QFE pressure QNH pressure”.
Example:
0R0!<cr>0+1009.066+1009.066+1021.121<cr><lf>
75
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