Saving text message details after power loss

Is there any way to save the date and time in a text message display after a power loss to LOGO?

 Hello Studd,

There is a way. It can be not a "best practice". It is a trick. But it works.

By "Message enable time" and "Message enable date" you can see the last time and date fault.

For this, the Logo must be supplied by a UPS. A relay is necessary too.

For every fault occured, a input changes  message text En 0 to 1, and update time and date fault.

Be sure: the program can not run during the fault.