TM172SIG retain variables

[Szekeres_ADE]

Hello,

I am writing a program for TM172SIG.
I need some variables to retain their values ​​in case of power failure.
How can I do this?

Thank you:
Zsolt

@retain variable

[FedericoM · Accepted solution]

Hi,

the RETAIN area of TM172SIG is stored into flash on variation with the following rules:

If your retain data change continously it will be really saved once per minute, but you will damage soon the Flash.

The RETAIN area of TM173O is instead saved at power off, TM172 has a DWORD retained by lithium battery.

Do you have only TM172SIG in your architecture?

[Szekeres_ADE]

Hello Federico,

Yes, there is only a TM172SIG in the architecture.

I collect some machine running signal, make working hours, and send hours and minutes end of the day in email.

I like to save the datas i the reatin memory every minutes.

So my  update time 60s.

[FedericoM]

It is better to save working hours into flash every hour

[Szekeres_ADE]

Dear Federico,

Thanks for the help.
I'll keep an eye on the timing.