Hi,

I'm new to the forum, and I'm just learning about CNCs. We've got a Fanuc 0i-TD. Occasionally, it will shutdown with an error screen saying "SYS_ALM019 Illegal Instruction Program Exception" then "Main Board(CPU)" with a bunch of stack information following. We've checked our maintenance manual, and can't find details for a sys_alm019. All of the sys_alm information seems to start at 400.

Any ideas what sys_alm019 may be or which manual may have details about this? As we troubleshoot, I'll add more information.

Thanks to anyone who has any insight here!