
APPENDIX
B. ALARM LIST
B–62835EN/01
372
The details of spindle alarm No. 750 are displayed in the diagnosis display
(No. 409) as shown below.
#7 #6 #5 #4 #3 #2 #1 #0
SPE S1E SHE409
SPE 0 : In the spindle serial control, the serial spindle parameters
fulfill the spindle unit startup conditions.
1 : In the spindle serial control, the serial spindle parameters do
not fulfill the spindle unit startup conditions.
S1E 0 : The first spindle is normal during the spindle serial control
startup.
1 : The first spindle was detected to have a fault during the
spindle axis serial control startup.
SHE 0 : The serial communications module in the CNC is normal.
1 : The serial communications module in the CNC was detected
to have a fault.
9) System alarms
(These alarms cannot be reset with reset key.)
Number Message Contents
900 ROM PARITY ROM parity error
Replace the ROM.
910 SRAM PARITY: (4N) RAM parity error. Clear the memory or replace the base PCB or
memory module.
After this operation, reset all data including the parameters.
911 SRAM PARITY : (4N+1) RAM parity error. Clear the memory or replace the base PCB or
memory module.
After this operation, reset all data including the parameters.
920 SERVO ALARM (1/2 AXIS) Servo alarm (1st or 2nd axis). A watchdog alarm or a local RAM par-
ity error of the servo occured.
Replace the servo control module on the main CPU board.
924 SERVO MODULE SETTING
ERROR
The servo module is not installed.
Check that the servo control module or servo interface module on the
base PCB is mounted securely.
930 CPU INTERRUPUT CPU error (abnormal interrupt)
The base PCB, memory module, or CPU module is faulty.
950 PMC SYSTEM ALARM Fault occurred in the PMC. The base PCB or PMC module may be
faulty.
951 PMC–PA WATCH DOG ALARM Fault occurred in the PMC–PA3 module (watchdog alarm).
Defective base printed–circuit board or PMC control module
970 NMI OCCURRED IN BOC A RAM parity error or NMI occurred in the PMC–PA3 module. It is
likely that the base printed–circuit board or PMC module is defective.
971 NMI OCCURRED IN SLC An alarm occurred in the FANUC I/O link master function. Check the
connection between the controller and the I/O unit or I/O card. Also
check whether the I/O unit and I/O card are supplied with power and
whether the interface module or the I/O card is faulty. Or, check the
PMC module.
973 NON MASK INTERRUPT NMI occurred for an unknown reason. Or, a communication error oc-
curred in the FANUC I/O link slave function.
980 SYNC ERROR The ITP period of the master became asynchronous with that of the
slave. Replace the base printed–circuit board.
D The details of spindle
alarm No.750