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SR50 and CR200 SDI-12 problems


Matt3169 Feb 20, 2010 03:01 AM

I have a recently purchased CR200 and an older SR50 sonic ranging sensor. I've tried all SDI-12 addresses, and I always get "NAN" for my outputs. I've been using short cut for programming. The sensor works perfectly with my CR10XPB.

Any ideas what my problem is?

Thanks!


IslandMan Feb 20, 2010 10:48 AM

Matt,
Please post the SDIRecorder command you are using in the CR200.
IslandMan

* Last updated by: IslandMan on 2/20/2010 @ 3:52 AM *


jra Feb 22, 2010 04:41 PM

Also, what is your scan interval? Slow things down to no faster than 5 seconds while you are troubleshooting.

Janet


Matt3169 Feb 24, 2010 07:07 AM

This is the Main Program I created with Short Cut:

'Main Program

BeginProgram
Scan(30,Sec)
'Default Datalogger Battery Voltage measurement BattV
Battery(BattV)
'109 Temperature Probe measurement T109_C
Therm109(T109_C,1,1,1,1,0)
'SR50 Sonic Ranging Sensor(SDI-12 Output) .cont'd. measurements DT, TCDT, and DBTCDT
SDI12Recorder(DT,"0M!",100,0)
TCDT=DT*SQR((T109_C+273.15)/273.15)
DBTCDT=150-TCDT
'Call Data Tables and Store Data
CallTable(Table1)
CallTable(Table2)
NextScan
EndProg


IslandMan Feb 24, 2010 10:31 AM

Hi Matt,
I've been over the program, can't see anything wrong with that. Could it be a wiring issue? Only other issue I can think of is possibly the jumper settings on the sensor?
Sorry I don't have more ideas.
IslandMan


aps Feb 24, 2010 02:49 PM

Please try that program without the quotes around the SDI-12 command, i.e.

SDI12Recorder(DT,0M!,100,0)

This is a difference compared to some of our other loggers for reasons I cannot really explain.

Also check the program you are loading compiles correctly too as the code above has some missing declarations and BeginProgram which is not right.

Once running check if you can hear the sensor fire (click) every 30 sec too.


Matt3169 Mar 6, 2010 03:35 AM

The problem seemed to be the CR200 OS. The unit was shipped with v07 last month (2/10). I was advised to download and upgrade to v09 which didn't work either. A CS engineer emailed me v06 and the SR50 is now working great with the CR200! Thanks for all of your suggestions everyone.


Dataloggers Sep 20, 2010 01:45 AM

Hi ,
I am using CR10X logger with 12 Sentek moisture sensors. I cannot go more than 12reps in the Elog. Is there a way to increase > 12 replecation to be able to read >12 sensors attached to the logger?

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