User`s manual

65
CHAPTER2 DeviceNet Unit
2-14 Troubleshooting
Check the following items if any problems occur during operation. Also, refer to "Trou-
bleshooting" in the controller instruction manual and always refer to the section on trou-
bleshooting in the master station sequencer (PLC) instruction manual. If the following
items do not eliminate the problem, promptly contact your Yamaha dealer or Yamaha for
assistance.
Checkpoints
• Check if DeviceNet cable is not
connected, is miswired, or wires are
broken.
• Refer to "2-5-1 Validating the
DeviceNet unit" and check that the
DeviceNet unit is properly validated.
• Refer to "2-5-3 How to check MAC
ID and communication speed" and
check the MAC ID.
• Refer to "2-5-3 How to check MAC
ID and communication speed" and
check the MAC ID.
• Connect the HPB and check for an
alarm.
• Check if the status LED is lit in red.
• Check the DeviceNet cable wiring.
• Check the DeviceNet cable
installation.
• Replace the DeviceNet unit.
• Check bit 15 status of "m" channel
input.
• Check if set to emergency stop at HPB
or external parallel I/O.
• Connect the HPB and check the alarm
that was issued. - Status LED is lit up
in red.
Remedy
• Correctly repair any miswirings or
unconnected wiring. Replace the
cable if broken.
• Validate the DeviceNet unit, and turn
on the controller power again.
• Refer to "2-5-2 Setting MAC ID and
communication speed" and reset the
MAC ID. Then turn on the controller
power again.
• Refer to "2-5-2 Setting MAC ID and
communication speed" and reset the
communication speed. Then turn on
the controller power again.
• Refer to the controller instruction
manual and troubleshoot according to
the particular alarm.
• Repair the wiring.
• Reinstall the DeviceNet unit away
from the source of noise
(motor/power lines.)
• If this solves the problem, replace the
DeviceNet unit.
• To turn off the servo, set bit 15 of
"m" channel input to ON .
• Cancel emergency stop on the HPB
or external parallel I/O in order to set
the servo to on (servo-on).
• Refer to the controller instruction
manual and troubleshoot per the
particular alarm.
No.
1
2
Causes
DeviceNet cable
not correctly
connected.
DeviceNet unit is
not validated so
cannot be
identified from
controller.
Wrong MAC ID
setting.
Wrong
communication
speed setting.
Alarm occurring
on controller.
DeviceNet cable
length does not
meet
specifications for
the DeviceNet, or
a terminating
resistor is not
connected.
DeviceNet cable is
in proximity to a
noise source such
as motor/power
lines.
DeviceNet unit is
defective.
Set to emergency
stop as bit 15 of
"m" channel
input was set to
OFF.
Set to emergency
stop from HPB
or external
parallel I/O.
Controller alarm
was issued.
1)
2)
3)
4)
5)
6)
7)
8)
1)
2)
3)
Symptom
When using
the master
station
sequencer
line test
function,
unable to
verify from
the master
station
sequencer
(PLC), that
the controller
is correctly
connected to
the
DeviceNet
system.
Servo won't
turn on.
(continued to next pa
g
e)