I have a DT85 series 4 running v9.20

Whilst the logger is logging i want to unload a time frame of data. i try to connect via Ethernet and the address displayed on the LCD screen. the browser tries to go through its usual process but doesn't display the usual configure, monitor page?

i had to perform a hard reset which as a result looses all data stored.

i have the logger set for 5 sec intervals and have 2 CEM modules attached.

is there any way round this issue ?

Cheers

Good morning Andyc

The primary job of the logger is to sample data so the highest priority is given to the sampling and storing the data.
Comms, web services run as background processes on any remaining processing power left over.
Slow comms etc is the result of sampling near the maximum capacity of the processor.

While 5 second doesn't seem that fast we don't know the number of channels you are reading.
Having 2 CEM20's attached would indicate a large number of channels.
The only solution is to slow down your sampling speed to free up the processor resources to allow more background threads.

Cheers,
Roger

Hi Andyc,

Roger is right, the logger maximum speed is 25 Hz (or 40 Hz for series 4) so assuming if you utilize all terminals in both CEM20 for 2 wire sensors, there will be maximum 120 sensors.
If you have series 3 logger (or series 4 without maximum speed setting), the number of channel almost hit 25 Hz limit (5 seconds - 125 data points).

In that instance the free time for unloading dEX is almost none, thus from the user perspective dEX become very slow.
Please reduce the frequency or halt the job temporarily when you need to access dEX.

One last thing, hard reset will not delete the data, may I know the process that you did to re-run dEX?

Best regards,
Rudy Gunawan