When you look at the design lifespan for a Fanuc CNC compared to a generic “computer” by which I presumed you meant PC, you might recognize the manufacturer’s desire to use time proven and trusted architecture.
Vanc, you KNOW that answer is an indefensible utter bullshit with today's technology right?
The architecture is NOT!!! the obstacle for implementing a system where battery dependent backup is the only way to salvage the world.
You KNOW it!
Letting a battery go dead is just plain lazy, sloppy operation. Not having a current backup is stupid lazy behavior.
First, not accurately monitoring a battery condition by the very control that absolutely depends on it IS a lazy, sloppy and inexcusable design!
Mitsubishi MSX-850, and Fanuc Oi-TC control Does not!!! adequately monitor the status of the batteries!
Second, you cannot back up the positional parameters with absolute encoders.
You just cannot.
Period.
The END!
I don't know if you ever installed brand new batteries that were defective from the box.
I have!
Twice!
Fucking thing cost me over $2K!
Once I've replaced batteries that were 5 years expired. Radio Shack sold them as new, I did not check the expiration date, put them in a Mori NL.
It died 7 months later.
Control parameters remained intact, but the GPS location sensor was not.
After getting the machine re-authorized, I found out that all the absolute encoder data was lost as well, and that took a service guy to re establish everything
on a 2 spindle Y axis machine, mostly because the manual fucking SUCKS in how it explains the procedure!
Then, the second time, the battery I purchased and checked with a VM before installing in a machine in the morning, ran through the day without warning.
Then, when I powered it up again the next morning I got the dreaded absolute encoder parameter lost message, only to find that one of the two 3V batteries now measure .2V!
So no, I do not buy the bullshit that "proven technology" is the reason behind the reliance behind battery backed up systems built today!