
B-63354EN/04 APPENDIX A.TROUBLESHOOTING
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2) Press the EMERGENCY STOP button on the machine
with the servo/spindle amplifier OFF, and issue the
"ping" command from the personal computer.
3) Count the number of lost packets (packets for which a
response was not returned).
f a lost packet occurs in this state, the machine is
probably being affected by electrical influence from
peripheral machines.
Countermeasure:
Pin-point the source of the electrical noise, and check
the wiring again to prevent the influence of electrical
noise.
2 About the influence of electrical noise from mounted
machinery
1) Start up the machine in the same way as 1. above.
2) Cancel the emergency stop on the machine with the
servo/spindle amplifier ON, and issue the "ping"
command from the personal computer.
3) Count the number of lost packets.
If more lost packets than in 1 above are occurring, a
probable cause is the influence of electrical noise on the
machine itself. General probable causes are the state of
the ground on the machine or on the communicating
party.
Countermeasure:
Check the state of the ground on the machine or on the
communicating party, and insulate the communications
trunk with the machine.
• For details on how to check the operating status or
communications status of the Ethernet board other than the
above, see "VI. Maintenance."