Internet PLC Forum

General => Technical support => Topic started by: lberridge on February 25, 2011, 01:03:31 PM

Title: FRAM-RTC memory addressing
Post by: lberridge on February 25, 2011, 01:03:31 PM

I am using a Nano-10 in a data logging application
with FRAM-RTC installed
Memory addresses above 1024 do not seem to work.
SAVE_EEP and LOAD_EEP return 0 rather than attempted stored value.
Also EEP utility in latest TRIlogy version limits access above 1024
Is 11K words FRAM contiguous? Start address? End Address?
Please advise.

Title: Re:FRAM-RTC memory addressing
Post by: support on February 25, 2011, 09:23:42 PM

1) Please ensure that the FRAM-RTC is properly plugged into the socket.

2) Please select "Controller->Get PLC's Hardware Info" to see if the maximum EEPROM space is 11K. If it says only 1024 that means either the FRAM-RTC is faulty or some problem on the Nano-10. You can change a different FRAM-RTC to see if the new FRAM-RTC works. If it still does not work then arrange for RMA and send both PLC and FRAM-RTC back for inspection/trouble-shooting.

Title: Re:FRAM-RTC memory addressing
Post by: lberridge on February 26, 2011, 08:46:52 AM

Reseating in socket solved the problem. Thank you.