
B–63173EN–1/01
2. PREPARATIONS FOR OPERATION
136
Number Message Contents
301 APC alarm:
nth–axis communica-
tion
nth–axis (n=1 – 8) APC communication er-
ror. Failure in data transmission
Possible causes include a faulty APC, cable,
or servo interface module.
302 APC alarm:
nth–axis over time
nth–axis (n=1 – 8) APC overtime error.
Failure in data transmission.
Possible causes include a faulty APC, cable,
or servo interface module.
303 APC alarm:
nth–axis framing
nth–axis (n=1 – 8) APC framing error. Failure
in data transmission.
Possible causes include a faulty APC, cable,
or servo interface module.
304 APC alarm:
nth–axis parity
nth–axis (n=1 – 8) APC parity error.
Failure in data transmission.
Possible causes include a faulty APC, cable,
or servo interface module.
305 APC alarm:
nth–axis pulse error
nth–axis (n=1 – 8) APC pulse error alarm.
APC alarm.APC or cable may be faulty.
306 APC alarm:
nth–axis battery
voltage 0
nth–axis (n=1 – 8) APC battery voltage has
decreased to a low level so that the data can-
not be held.
APC alarm. Battery or cable may be faulty.
307 APC alarm:
nth–axis battery low
1
nth–axis (n=1 – 8) axis APC battery voltage
reaches a level where the battery must be re-
newed.
APC alarm. Replace the battery.
308 APC alarm:
nth–axis battery low
2
nth–axis (n=1 – 8) APC battery voltage has
reached a level where the battery must be re-
newed (including when power is OFF).
APC alarm .Replace battery.
OPERATOR’S MANUAL
(B–63174EN)
Appendix G Alarm list
Alarm and message
Reference item