Specifications

I Alarms
MCP Alarms (Y)
I - 27
Y02 Servo communication error : Number of received frames 0051 0x04
Details
A communication error has occurred between CNC and drive unit.
The number of received frames was inconsistent in four consecutive communication cycles.
x: The number of received frames subtracted by one (0 or later)
Remedy
- Check for any duplication of rotary switch settings on drive units connected with other drive
units.
- Confirm that the number of axes does not exceed the number designated by CNC.
- Check for any failure of the communication cable connectors.
- Check for any failure of the communication cables.
- Take measures against noise.
(Note 1) When two or more "Y02 System alarms 0051" alarms occur at the same time, only
the alarm which occurs first is displayed. Therefore, the display precedence will be as
follows: 0006, 0x04, 0005, 0x20, then 0x03.
(Note 2) Station No. always shows "0" in the alarm details, because C70 has only one com-
munication channel.
(Note 3) If the error is not cleared with the measures above, the drive unit may have a fault.
Take a note of the 7-segment LED contents of each drive unit and contact service center.
Y02 SV commu er: Commu error 0051 0005
Details
A communication error has occurred between controller and drive unit.
Non-specified communication errors occurred in four consecutive communication cycles.
Remedy
- Check for any failure of the communication cable connectors.
- Check for any failure of the communication cables.
- Take measures against noise.
(Note 1) When two or more "Y02 System alarms 0051" alarms occur at the same time, only
the alarm which occurs first is displayed. Therefore, the display precedence will be as
follows: 0006, 0x04, 0005, 0x20, then 0x03.
(Note 2) Station No. always shows "0" in the alarm details, because C70 has only one com-
munication channel.
(Note 3) If the error is not cleared with the measures above, the drive unit may have a fault.
Take a note of the 7-segment LED contents of each drive unit and contact service center.
Y02 Servo communication error : Connect error 0051 0006
Details
A communication error has occurred between CNC and drive unit.
CRC errors, overrun errors or short frame errors occurred in four consecutive communication
cycles.
Otherwise, 250 bytes of "0"/"1" data was received.
Remedy
- Confirm that the rotary switch setting on the drive unit connected with CNC does not dupli-
cate with any other.
- Confirm that the number of axes does not exceed the number designated by CNC.
- Check for any failure of the communication cable connectors.
- Check for any failure of the communication cables.
- Take measures against noise.
(Note 1) When two or more "Y02 System alarms 0051" alarms occur at the same time, only
the alarm which occurs first is displayed. Therefore, the display precedence will be as
follows: 0006, 0x04, 0005, 0x20, then 0x03.
(Note 2) Station No. always shows "0" in the alarm details, because C70 has only one com-
munication channel.
(Note 3) If the error is not cleared with the measures above, the drive unit may have a fault.
Take a note of the 7-segment LED contents of each drive unit and contact service center.
Y02 Control axis No. error: Connection error 0051 0x07
Details
A communication error has occurred between CNC and drive unit.
x: Drive unit rotary switch No. (0 or later)
Remedy
- Take measures against noise.
- Check for any failure of the communication cable connectors.
- Check for any failure of the communication cables.
- The drive unit may have a fault. Take a note of the 7-segment LED contents of each drive
unit and contact service center.
- Update the drive unit software version.
(Note 1) When two or more "Y02 System alarms 0051" alarms occur at the same time, only
the alarm which occurs first is displayed. Therefore, the display precedence will be as
follows: 0006, 0x04, 0005, 0x20, then 0x03.
(Note 2) Station No. always shows "0" in the alarm details, because C70 has only one com-
munication channel.
(Note 3) If the error is not cleared with the measures above, the drive unit may have a fault.
Take a note of the 7-segment LED contents of each drive unit and contact service center.
Y02 Servo communication error : Initial communication error 0051 0x20
Details
A communication error has occurred between CNC and drive unit.
A drive unit stopped due to transition failure from initial communication to runtime.
x: Drive unit rotary switch No. (0 or later)
Remedy
- Confirm that "the spindle drive unit rotary switch No. + 1" does not duplicate with the lower
two digits in "#1021 mcp_no (Drive unit I/F channel No. (servo)".
- Confirm that "the servo drive unit rotary switch No. + 1" does not duplicate with the lower two
digits in "#3031 smcp_no (Drive unit I/F channel No. (spindle)".
(Note 1) When two or more "Y02 System alarms 0051" alarms occur at the same time, only
the alarm which occurs first is displayed. Therefore, the display precedence will be as
follows: 0006, 0x04, 0005, 0x20, then 0x03.
(Note 2) Station No. always shows "0" in the alarm details, because C70 has only one com-
munication channel.
(Note 3) If the error is not cleared with the measures above, the drive unit may have a fault.
Take a note of the 7-segment LED contents of each drive unit and contact service center.