Yamaha RCX222 User Manual page 477

3. I/O operation
Symptom
1 Won't operate
even when
dedicated input
signal is
supplied.
2 No output of
dedicated output
signal.
3 No output of
general-purpose
I/O signal.
Possible cause
• No DC24V supply.
• Problem in signal
connection.
• Error has occurred.
• No DC24V supply.
• Problem in signal
connection.
• Error has occurred.
• No DC24V supply.
• Problem in signal
connection.
• Error in I/O interface
(OP.DIO) setting.
• Error has occurred.
Check items
• Check that DC 24V
is supplied from I/O
interface connector
(STD.DIO).
• Check wiring on I/O
interface connector
(STD.DIO).
• Connect RPB and
check robot settings
in SYSTEM mode.
• Check if "ERR" LED
is lit on front of
controller.
• Check that DC 24V
is supplied from I/O
interface connector
(STD.DIO).
• Check wiring on I/O
interface connector
(STD.DIO).
• Connect the RPB
and check robot
settings in SYSTEM
mode.
• Check if "ERR" LED
is lit on front of
controller.
• Check that DC 24V
is supplied from I/O
interface connector
(STD.DIO).
• Check that DC 24V
is supplied for I/O
interface connector
(OP.DIO).
• Check wiring on I/O
interface connector
(STD.DIO).
• Check wiring on I/O
interface connector
(OP.DIO).
• Check the I/O
interface (OP.DIO)
setting on the DIP
switch.
• Connect the RPB
and check the error
information.
• Check if "ERR" LED
is lit on front of
controller.
2. Troubleshooting
Corrective action
• Supply DC 24V.
• Make the correct
wiring on I/O
interface connector
(STD.DIO).
• Check the cause
from the error
information.
• Eliminate the cause
of the error.
• Supply DC 24V.
• Make the correct
wiring on I/O
interface connector
(STD.DIO).
• Check the cause
from the error
information.
• Eliminate the cause
of the error.
• Supply DC 24V.
• Make the correct
wiring on I/O
interface connector
(STD.DIO).
• Make the correct
wiring on I/O
interface connector
(OP.DIO).
• Make the correct
I/O interface (OP.
DIO) setting.
• Check the cause
from the error
information.
• Eliminate the cause
of the error.
9-61
Chapter
9