APPENDIXG. ALARM LIST
B–63834EN/02
754
Number ContentsMessage
5306 MODE CHANGE ERROR In an one–touch macro call, the mode is not normally switched at the
beginning.
5311 FSSB : ILLEGAL CONNECTION 1. This alarm is issued if, in a pair of axes in which one axis has an
odd servo axis number (parameter No. 1023) and the other has an
even servo axis number that is adjacent to the odd servo axis
number, one of the axes is assigned to an amplifier connected to
an FSSB in a system different from that for the other axis.
2. This alarm is issued if the system does not satisfy a constraint for
performing high–speed HRV control, current control periods for
two FSSBs are different, and it is specified that pulse modules
connected to an FSSB in different paths are to be used.
2) Background edit alarm
Number Message Contents
070 to 074
085 to 087
BP/S alarm BP/S alarm occurs in the same number as the P/S alarm that occurs in
ordinary program edit.
140 BP/S alarm It was attempted to select or delete in the background a program being
selected in the foreground. (Note)
Use background editing correctly.
NOTE
Alarm in background edit is displayed in the key input line of the background edit screen instead
of the ordinary alarm screen and is resettable by any of the MDI key operation.
3) Absolute pulse coder (APC) alarm
Number Message Contents
300 n AXIS NEED ZRN Manual reference position return is required for the nth–axis (n=1 – 4).
301 APC ALARM:n AXIS
COMMUNICATION
nth–axis (n=1 – 4) APC communication error. Failure in data transmission
Possible causes include a faulty APC, cable, or servo interface module.
302 APC ALARM:n AXIS
OVER TIME
nth–axis (n=1 – 4) APC overtime error.
Failure in data transmission.
Possible causes include a faulty APC, cable, or servo interface module.
303 APC ALARM:n AXIS
FRAMING
nth–axis (n=1 – 4) APC framing error. Failure in data transmission.
Possible causes include a faulty APC, cable, or servo interface module.
304 APC ALARM:n AXIS
PARITY
nth–axis (n=1 – 4) APC parity error.
Failure in data transmission. Possible causes include a faulty APC, cable, or servo
interface module.
305 APC ALARM:n AXIS
PULSE MISS
nth–axis (n=1 – 4) APC pulse error alarm.
APC alarm. APC or cable may be faulty.
306 APC ALARM:n AXIS
BATTERY ZERO
nth–axis (n=1 – 4) APC battery voltage has decreased to a low level so that the data
cannot be held.
APC alarm. Battery or cable may be faulty.
307 APC ALARM:n AXIS
BATTERY DOWN 1
nth–axis (n=1 – 4) axis APC battery voltage reaches a level where the battery must
be renewed.
APC alarm. Replace the battery.
308 APC ALARM:n AXIS
BATTERY DOWN 2
nth–axis (n=1 – 4) APC battery voltage has reached a level where the battery must
be renewed (including when power is OFF).
APC alarm .Replace battery.
309 APC ALARM:n AXIS ZRN
IMPOSSIBLE
An attempt was made to perform reference position return without rotating the motor
through one or more turns. Rotate the motor through one or more turns, turn off the
power then on again, then perform reference position return.