3. TROUBLESHOOTING AND
RECOVERY PROCEDURES
B–65195EN/01
TROUBLESHOOTING AND RECOVERY
58
D α pulse coder
b7 b6 b5 b4 b3 b2 b1 b0
Alarm 1 FBAL
b7 b6 b5 b4 b3 b2 b1 b0
Alarm 2 ALDF
b7 b6 b5 b4 b3 b2 b1 b0
Alarm 3 CMAL
(⇒ See Section 3.3.1.)
CMAL (b3)
A pulse count error occurred. If the CNC software does not
correspond to
α Series, this bit is not used for a mode other
than the APC MODE. If a built–in pulse coder hardware dis-
continued alarm (bit 1 of alarm 1 = 1 and bit 7 of alarm 2 = 1)
occurs in a system with an
α pulse coder, a pulse count error
has occurred.
b7 b6 b5 b4 b3 b2 b1 b0
Alarm 4 DTER CRC STB
(⇒ See Section 3.3.1.)
STB (b5)
A communication error occurred from the pulse coder
The pulse coder or feedback cable is abnormal, or the servo
module is defective.
CRC (b6)
A communication error occurred from the pulse coder
The pulse coder or feedback cable is abnormal, or the servo
module is defective.
DTER (b7)
The pulse coder does not communicate.
The pulse coder or feedback cable is abnormal.
3.3.8
Pulse Coder
Communication Error
Alarm