Don't you love how Fanuc makes a controler and sells it to the OEM and neither understand a message that one of them surely had something to do with the creation/genration of????

BTW, the message may have been created by an firm that Toyoda and/or Fanuc farmed the programming work out to when the machine was created/built. The message is/was essentially and will remain undocumented by the programmer. We ran across a lot of this sort of crap when I worked for a noted Japanese OEM.

They consider this to be "know how" and they don't always document the stuff to protect their "know how" aka trade secrets. Why? Because people don't fix their own stuff in Japan nor is there an aftermarket service system - they call in the OEM factory guys to service EVERYTHING. When they run into something like this, they simply replace the whole controller as nobody can fix it.

Besides, by the time the thing needs major service, they have developed a new, more modern one and the old one is obsolete anyway. And they think we are a throw away society....