
APPENDIX
G. ALARM LIST
B–63124EN/01
708
Number ContentsMessage
4871 AUTO SETTING PIECES ERROR In safety zone auto setting, the safety zone pieces are not correct. Or
the position detector has gone wrong, please tell your machine tool
builder.
4872 AUTO SETTING COMMAND
ERROR
M code, S code or T code is specified with safety zone auto setting
command (G32).
G32 is specified in the nibbling mode, in the cutter compensation, in
the rotation mode or the scaling mode.
13) System alarms
(These alarms cannot be reset with reset key.)
Number Message Contents
900 ROM PARITY ROM parity error (CNC/OMM/Servo)
Rewrite the flash ROM with the indicated ROM number.
910 RAM PARITY : (4N) RAM parity error in the tape memory RAM module. Clear the memory
or replace the module.
After this operation, reset all data including the parameters.
911 RAM PARITY: (4N+1) RAM parity error in the tape memory RAM module. Clear the memory
or replace the module.
After this operation, reset all data including the parameters.
912 RAM PARITY: (4N+2) RAM parity error in the tape memory RAM module. Clear the memory
or replace the module.
After this operation, reset all data including the parameters.
913 RAM PARITY : (4N+3) RAM parity error in the tape memory RAM module. Clear the memory
or replace the module.
After this operation, reset all data including the parameters.
914 SRAM PARITY (2N)
RAM parity error for part program storage RAM or additional SRAM.
p
lace the main CPU board or additional SRAM.
915 SRAM PARITY (2N+1)
.
Then, re–specify all data including parameters.
916 DRAM PARITY RAM parity error in the DRAM module. Replace the DRAM module.
920 SERVO ALARM (1/2 AXIS) Servo alarm (1st or 2nd axis). A watchdog alarm or a RAM parity error
in the servo module occurred.
Replace the servo control module on the main CPU board.
921 SERVO ALARM (3/4 AXIS) Servo alarm (3rd or 4th axis). A watchdog alarm or a RAM parity error
in the servo module occurred.
Replace the servo control module on the main CPU board.
922 SERVO ALARM (5/6 AXIS) Servo alarm (5th to 8th axis). A watchdog alarm or a RAM parity error
in the servo module occurred.
Replace the servo control module on the option 2 board.
924 SERVO MODULE SETTING ER-
ROR
The digital servo module is not installed.
Check that the servo control module or servo interface module on the
main CPU or option 2 board is mounted securely.
926 SERVO ALARM (1/2/3/4/5/6 AXIS) Servo alarm (first to sixth axis). A RAM parity error in the servo module
or a watchdog alarm has occurred. Replace the servo control module
on the main CPU board.
930 CPU INTERRUPUT CPU error (abnormal interrupt)
The main CPU board is faulty.
950 PMC SYSTEM ALARM Fault occurred in the PMC. The PMC control module on the main CPU
board or option 3 board may be faulty.
951 PMC–RC WATCH DOG ALARM Fault occurred in the PMC–RC (watchdog alarm).Option 3 board may
be faulty.
970 NMI OCCURRED IN BOC RAM parity error or NMI occurred in the PMC–RB or PMC–RA2 module.