
B–62075E/04
5. TROUBLESHOOTING
315
Absolute pulse coder, cable or servo module is faulty.
Check the details of the error using the CNC diagnostic function.
The diagnostic number for each axis is obtained as follows:
3018 + (n – 1) x 20 (n: axis number = 1, 2, 3, ...)
#7
APMVALDiagnostic
#6
APPER
#5
APFER
#4
APTER
#3
APCER
#2 #1
APPLSM
#0
(1)#1 (APPLSM) A mispulse alarm has been issued.
⇒ Associate the reference position with absolute position detection.
(2) #3 (APCER) A communication error has occurred during data transfer.
#4 (APTER) A time–over error has occurred during data transfer.
#5 (APFER) A framing error has occurred during data transfer.
#3 (APPER) A parity error has occurred during data transfer.
⇒ (i) If the error recurs, identify the error by applying the above
diagnostic. If the diagnostic always indicates the same error,
replace the feedback cable, servo interface module, or pulse
coder.
(ii) If the diagnostic does not always indicate the same error, or if
any other failure is detected, the error may have been caused
by external noise.
(3)#7 (APMVAL) An excessive motor shift alarm has been issued.
This alarm is issued if the machine is shifted by a large amount,
exceeding 24000 detection unit pulses, upon power–on.
⇒ The machine must be prevented from shifting upon power–on.
NOTE
If the feedback cable, servo interface module, or pulse
coder is replaced, the reference position and machine zero
point will differ from those before replacement. Perform
adjustment and setting as necessary after replacement.
5.13
ALARM SV101 (DATA
ERROR (ABS PCDR))
Points
Causes and Remedies