
1.DISPLAY AND OPERATION B-63945EN/01
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STB: Communication failure of serial Pulsecoder.
Transferred data is erroneous.
PRM: The alarm is detected by the servo, the values specified in the
parameter is not correct.
#7 #6 #5 #4 #3 #2 #1 #0
DGN 204 OFS MCC LDA PMS
OFS: Abnormal current value result of A/D conversion of digital
MCC: Contacts of MCC of servo amplifier is melted.
LDA: Serial Pulsecoder LED is abnormal
PMS: Feedback is not correct due to faulty serial Pulsecoder C or feedback
cable.
• Details of separate serial Pulsecoder alarms
#7 #6 #5 #4 #3 #2 #1 #0
DGN 205 OHA LDA BLA PHA CMA BZA PMA SPH
OHA: Overheat occurred in the separate Pulsecoder.
LDA: An LED error occurred in the separate Pulsecoder.
BLA: A low battery voltage occurred in the separate Pulsecoder.
PHA: A phase data error occurred in the separate linear scale.
CMA: A count error occurred in the separate Pulsecoder.
BZA: The battery voltage for the separate Pulsecoder is zero.
PMA: A pulse error occurred in the separate Pulsecoder.
SPH: A soft phase data error occurred in the separate Pulsecoder.
#7 #6 #5 #4 #3 #2 #1 #0
DGN 206 DTE CRC STB
DTE: A data error occurred in the separate Pulsecoder.
CRC: A CRC error occurred in the separate Pulsecoder.
STB: A stop bit error occurred in the separate Pulsecoder.
• Details of invalid servo parameter alarms (on the CNC side)
When servo alarm No. 417 is issued, and diagnosis No. 203#4 = 0, its
cause is indicated.
When diagnosis No. 203#4 = 1, see diagnosis No. 352.
#7 #6 #5 #4 #3 #2 #1 #0
DGN 280 AXS DIR PLS PLC MOT
MOT: The motor type specified in parameter No. 2020 falls outside the
predetermined range.
PLC: The number of velocity feedback pulses per motor revolution,
specified in parameter No. 2023, is zero or less. The value is invalid.
PLS: The number of position feedback pulses per motor revolution,
specified in parameter No. 2024, is zero or less. The value is invalid.
DIR: The wrong direction of rotation for the motor is specified in parameter
No. 2022 (the value is other than 111 or -111).