Topcon BM-7A, Инструкция по эксплуатации

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4. Communication With a PC
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4.2.1 ST Command
When this command is sent to the BM-7A, measurement starts. After measurement is finished,
the measurement data is sent from the BM-7A.
Transmission from the PC to the BM-7A
After the USB or RS-232C line has been made active, the PC transmits the character string
"ST" (ASCII code 53H 54H), and then the PC transmits Cr (0Dh), Lf (0Ah).
Check of reception in the BM-7A
After the BM-7A receives "ST" + (Cr･Lf), it returns “OK” + (Cr･Lf) as a check command and
starts measurement.
Communication of measurement data
After measurement, the BM-7A transmits the measurement conditions and measurement data.
The delimiter (Cr･Lf) is attached to the end of 1 data string and the data are sent. After all the
data is transmitted, the ending code "END" is transmitted.
Output Format of Measurement Data
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「4.3 Remote Measurement Output Format」
A data check is not performed.
Data continues to be sent from the BM-7A until "END" is sent.
PC Command BM-7A
ST+(Cr･Lf)
OK+(Cr･Lf)
Measurement Start
･ ･ ･ ･ ･
Measurement end
Data communication
Data 1 + (Cr･Lf)
Data 2 + (Cr･Lf)
・
・
・
Data 21 + (Cr･Lf)
END + (Cr･Lf)
When Error Code E003 or E004 is displayed
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「4.5 Error Codes」