I can't find any information about how sleep works in the CR1000. How do I put the logger to sleep?
That wouldn't be sleep. That would be dead.
I can't find any information about how sleep works in the CR1000. How do I put the logger to sleep?
The logger is "asleep" any time it is not executing a scan or communicating with another device.
If your scan rate is 5 seconds, the datalogger will come out of sleep mode to run the instructions in the program, and then it will return to sleep mode for 5 seconds until it is time to run the scan again. It will also wake up any time communication is attempted with the datalogger.
Regards,
Dana
I guessed that, however I find that between scans current consumption is 6.6 mA instead of the stated 0.6mA. This is with no sensors or serial devices connected. Could it be something to do with my code?
Perhaps there is something in the program that is keeping the datalogger "awake". Hard to tell without seeing the program.
Regards, Dana
I loaded the default program from CRbasic and just changed the scan rate to 10 seconds and data interval to 20 seconds. Still the sleep current is 6.6mA:
'CR1000 Series Datalogger
'To create a different opening program template, type in new
'instructions and select Template | Save as Default Template
'date:
'program author:
'Declare Public Variables
'Example:
Public PTemp, batt_volt
'Declare Other Variables
'Example:
'Dim Counter
'Declare Constants
'Example:
'CONST PI = 3.141592654
'Define Data Tables
DataTable (Test,1,-1)
DataInterval (0,60,Sec,10)
Minimum (1,batt_volt,FP2,0,False)
Sample (1,PTemp,FP2)
EndTable
'Define Subroutines
'Sub
'EnterSub instructions here
'EndSub
'Main Program
BeginProg
Scan (20,Sec,0,0)
PanelTemp (PTemp,250)
Battery (Batt_volt)
'Enter other measurement instructions
'Call Output Tables
'Example:
CallTable Test
NextScan
EndProg
Any other ideas?
Thanks,
Ross
Are you leaving the logger connected to the PC during this test.
What operating system is the logger running?
Hi all, thanks for replying.
Logger was not connected to computer during test, and OS version was CR1000 15.
I upgraded the OS to version 16, and sometime after startup (perhaps 30 seconds?) the unit goes to sleep (0.7mA). When it does the measurements it uses about 4mA. Sometimes I notice that it will jump up to about 20mA for about 10-15 seconds, any cause for this?
Anyway it is working well enough now! Time to deploy. Thanks for the responses.
Ross