Section 11. Programming Resource Library
113
SDI-12 commands and responses are defined by the SDI-12 Support Group
(www.sdi-12.org) and are summarized in
TABLE. Standard SDI-12 Command
& Response Set
(p. 113). Sensor manufacturers determine which commands to
support. The most common commands are detailed below.
Table 14.
Standard SDI-12 Command & Response Set
Name Command
1
Response
2
Break Continuous
spacing for at least
12 milliseconds
None
Acknowledge Active
a!
a<CR><LF>
Send Identification
aI!
allccccccccmmmmmmvvvxxx...xx<CR><LF>
Change Address
aAb!
b<CR><LF> (support for this command is required only
if the sensor supports software changeable addresses)
Address Query
?!
a<CR><LF>
Start Measurement
3
aM! atttn<CR><LF>
Start Measurement and Request
CRC
3
aMC! atttn<CR><LF>
Send Data
aD0!
.
.
.
aD9!
a<values><CR><LF> or a<values><CRC><CR><LF>
a<values><CR><LF> or a<values><CRC><CR><LF>
a<values><CR><LF> or a<values><CRC><CR><LF>
a<values><CR><LF> or a<values><CRC><CR><LF>
a<values><CR><LF> or a<values><CRC><CR><LF>
Additional Measurements
3
aM1!
.
.
.
aM9!
atttn<CR><LF>
atttn<CR><LF>
atttn<CR><LF>
atttn<CR><LF>
atttn<CR><LF>
Additional Measurements and
Request CRC
3
aMC1! ... aMC9!
atttn<CR><LF>
Start Verification
3
aV! atttn<CR><LF>
Start Concurrent Measurement
aC!
atttnn<CR><LF>
Additional Concurrent
Measurements
aC1!
.
.
.
aC9!
atttnn<CR><LF>
atttnn<CR><LF>
atttnn<CR><LF>
atttnn<CR><LF>
atttnn<CR><LF>
Additional Concurrent
Measurements and Request CRC
aCC1! ... aCC9!
atttnn<CR><LF>
Continuous Measurements
aR0! ... aR9!
a<values><CR><LF> (formatted like the D commands)
Continuous Measurements and
Request CRC
aRC0! ... aRC9!
a<values><CRC><CR><LF> (formatted like the D
commands)
1
If the terminator '!' is not present, the command will not be issued. The CRBASIC SDI12Recorder () instruction, however, will
still pick up data resulting from a previously issued "C!" command.
2
Complete response string can be obtained when using the SDIRecorder () instruction by declaring the Destination variable as
String.
3
This command may result in a service request.
Summary of Contents for CR200
Page 32: ...Section 2 Quickstart Tutorial 22 ...
Page 45: ...Section 3 Overview 35 3 3 Specifications ...
Page 46: ...Section 3 Overview 36 ...
Page 58: ...Section 4 Sensor Support 48 ...
Page 62: ...Section 5 Measurement and Control Peripherals 52 ...
Page 78: ...Section 8 CR200 X Configuration 68 ...
Page 102: ...Section 9 Programming 92 ...
Page 138: ...Section 11 Programming Resource Library 128 ...
Page 156: ...Section 16 Support Software 146 ...
Page 160: ...Section 17 Care and Maintenance 150 ...
Page 167: ...Section 18 Troubleshooting 157 18 3 3 2 Charging Circuit Test Solar Panel ...
Page 168: ...Section 18 Troubleshooting 158 18 3 3 3 Charging Circuit Test Transformer ...
Page 169: ...Section 18 Troubleshooting 159 18 3 3 4 Adjusting Charging Circuit Voltage ...
Page 170: ...Section 18 Troubleshooting 160 ...
Page 184: ...Appendix A Glossary 14 ...
Page 190: ...Appendix B Status Table and Settings 20 ...
Page 192: ...Appendix C Serial Port Pin Outs 22 ...
Page 211: ......