
APPENDIXG. ALARM LIST
B–63014EN/02
994
No. DescriptionMessage
385 n AXIS : SERIAL DATA ERROR
(EXT)
Communication data from the separate detector cannot be received.
386 n AXIS : DATA TRANS. ERROR
(EXT)
A CRC or stop bit error occurred in the communication data being
received from the separate detector.
#7
202
#6
CSA
#5
BLA
#4
PHA
#3
PCA
#2
BZA
#1
CKA
#0
SPH
#6 (CSA) : Check sum alarm has occurred.
#5 (BLA) : Battery low alarm has occurred.
#4 (PHA) : Phase data trouble alarm has occurred.
#3 (PCA) : Speed count trouble alarm has occurred.
#2 (BZA) : Battery zero alarm has occurred.
#1 (CKA) : Clock alarm has occurred.
#0 (SPH) : Soft phase data trouble alarm has occurred.
#7
DTE203
#6
CRC
#5
STB
#4
PRM
#3 #2 #1 #0
#7 (DTE) : Data error has occurred.
#6 (CRC) : CRC error has occurred.
#5 (STB) : Stop bit error has occurred.
#4 (PRM) : Parameter error alarm has occurred. In this case, a servo parameter error
alarm (No. 417) is also output.
5) Servo alarms
Number Message Contents
401 SERVO ALARM: n–TH AXIS VRDY
OFF
The n–th axis (axis 1–8) servo amplifier READY signal (DRDY) went off.
Refer to procedure of trouble shooting.
402 SERVO ALARM: SV CARD NOT EX-
IST
The axis control card is not provided.
403 SERVO ALARM: CARD/SOFT MIS-
MATCH
The combination of the axis control card and servo software is illegal.
The possible causes are as follows:
· A correct axis control card is not provided.
· Correct servo software is not installed on flash memory.
404 SERVO ALARM: n–TH AXIS VRDY
ON
Even though the n–th axis (axis 1–8) READY signal (MCON) went off,
the servo amplifier READY signal (DRDY) is still on. Or, when the power
was turned on, DRDY went on even though MCON was off.
Check that the servo interface module and servo amp are connected.
405 SERVO ALARM: (ZERO POINT RE-
TURN FAULT)
Position control system fault. Due to an NC or servo system fault in the
reference position return, there is the possibility that reference position
return could not be executed correctly. Try again from the manual refer-
ence position return.
407 SERVO ALARM: EXCESS ERROR The difference in synchronous axis position deviation exceeded the set
value.
409 SERVO ALARM: n AXIS TORQUE
ALM
Abnormal servo motor load has been detected. Alternatively, abnormal
spindle motor load has been detected in Cs mode.
D The details of serial
pulse coder alarm