Use this command to check the current supervisor settings.
Command format in ASCII and NMEA 0183:
aSU<cr><lf>Command format in SDI-12:
aXSU!| a | Device address |
| SU | Supervisor settings command in ASCII and NMEA 0183 |
| XSU | Supervisor settings command in SDI-12 |
| <cr><lf> | Command terminator in ASCII and NMEA 0183 |
| ! | Command terminator in SDI-12 |
The response in ASCII and NMEA 0183:
aSU,R=[R],I=[I],S=[S],H=[Y]<cr><lf>The response in SDI-12:
aXSU,R=[R],I=[I],S=[S],H=[Y]<cr><lf>