VEGA VEGAPULS C 21 Betriebsanleitung Seite 49

Command
aMC1! ... aMC9!
aC!
aCC!
aC1! ... aC9!
aCC1! ... aCC9!
aR0! ... aR9!
aRC0! ... aRC9!
aD0! ... aD9!
aV!
Send Identification
Example: Address = 2, Sensor = PULSC 21, device revision = 1 and serial number = 43210123
214VEGA____PSC 2100143210123
Initial Command
aI!
Start Measurement and Send Data
Command Response
aM! atttn<CR><LF>
a<CR><LF>
VEGAPULS C 21 • SDI-12
Response
atttn<CR><LF>
atttn<CR><LF>
atttn<CR><LF>
atttn<CR><LF>
atttn<CR><LF>
a<values><CR><LF>
a<values><CRC><CR><LF>
a<values><CR><LF> or
a<values><CRC><CR><LF>
attn<CR><LF>
Response
aiiccccccccmmmmmmvvvxxx..xxx<CR><LF>
a: sensor address
ii:SDI-12 version number (14)
cccccccc: 8 char for vendor identification (VEGA)
vvv: 3 char for sensor version (001)
xxxxxxxx: 8 characters for. serial number (Ser-Nr)
Example
a2VEGAbbbbPSC 2100143210123<CR><LF>
Description
Additional Measurements and Request CRC
Start Concurrent Measurement
Start Concurrent Measurement and Request CRC
Additional Concurrent Measurements
Additional Concurrent Measurements and Request
CRC
Continuous Measurements
Continuous Measurements and Request CRC
Send Data (M*, C*, V)
Start Verification
Description
Start measurement
a: sensor address
ttt: the time in seconds, until the sensor will have the
measurement ready
n: the number of measurement values the sensor will ma-
ke and return
a<CR><LF>: service request
13 Anhang
49