I'm looking to lay my hands on some ladder logic chips from a dead machine. I need to verify that my PC Writer from Fanuc will read, decode and burn new chips. The problem is that I don't have any chips to experiment with.
The chips will have a part number silk screened onto them something like
27C64-15. These were used on the old Fanuc 0 models A and B controls. The later model B and C controls used 27C256 chips. I have these.
If I can get this to work, I plan to modify some ladders on a few grinders. I don't want to experiment on the only good chips I have.