ROM parity error occurred.
(1)Based PC board mounted on the base PC board or BOOT software on
the CPU card is defective.
SYSTEM ALARM 88E0–01
900 ROM PARITY
or ROM is displayed
Confirm the series and versions of control software those are displayed
on upper right of the screen.
Replace the memory or CPU card.
Be careful about the version of the system software and boot software
stored on each card. (Observe the CAUTION described in Sections 2.6.2
* The memory module contains the following data, which has been
written by the machine tool builder. Once the memory module has
been replaced, it becomes necessary to restore these programs.
Ladder program produced by MTB, macro executer program
produced by MTB, and C language executer produced by MTB
The memory module incorporates also a battery–backed
SRAM. When the memory module is replaced, the data in
the SRAM will also be removed. So it is necessary to re–set
up the data in the SRAM.