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4.1.2 ST Command
"ST" command
The measurement starts when this command is transmitted to the instrument.
When measurement is ended, the measured data is returned with text data from the instrument.
①
Transmission from computer to the SR-LEDW/SR-UL2/SR-UL1R/SR-3AR
After activating the circuit of RS-232C, the computer transmits the character line
"ST" (ASCII code 53H 54H) and subsequently Cr (0Dh) and Lf (0Ah).
②
Check of reception in the SR-LEDW/SR-UL2/SR-UL1R/SR-3AR
When the SR-LEDW/SR-UL2/SR-UL1R/SR-3AR
receives "ST"+(Cr•Lf), it returns "OK"+(Cr•Lf) as a
check command and the measurement starts.
· In this manual, Cr
•
Lf was used as the delimiter but Cr is usable too.
☞
‘3.10 Remote Command Terminal Codes’
③
Communication of measurement data
After measurement, the instrument transmits the measuring conditions and measurement data.
The delimiter (Cr•Lf) is added to the last of each data line and then the data is transmitted.
After all the data is transmitted, the ending code "END" is transmitted.
Measurement Output Format
☞
‘4.2.1 Remote Measurement Output Format’
The communication method differs depending on the settings.
Setting Communication Method
☞
‘3.9 Data Communication Methods’
(1) Normal Type
When this method is selected, the data of "0x60" and "0x15" are not checked as compared with
"(2) CS900 Type". The SR-LEDW/SR-UL2/SR-UL1R/SR-3AR keeps sending data until "END".
PC
Command communication direction
Measuring instrument
“ST”+(Cr•Lf)
“OK”+(Cr•Lf)
Measurement starts.
• • • • • •
Measurement is ended.
Data communication
Measurement data 1+(Cr
•Lf)
Measurement data 2+(Cr
•Lf)
•
Measurement data 414+(Cr
•Lf)
“END”+(Cr•Lf)
Note
