Yamaha RCX142 User Manual page 449

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. • Check that DC 24V is supplied
from standard I/O interface
connector.
• Check DI04 on MPB screen.
• Problem in signal • Check wiring on standard I/O
connection. interface connector.
• Error has occurred. • Connect MPB and check robot
settings in SYSTEM mode.
• Check if "ERR" LED is lit on
front of controller.
• No DC24V supply. • Check that DC 24V is supplied
from standard I/O interface
connector.
• Check DI04 on MPB screen.
• Problem in signal • Check wiring on standard I/O
connection. interface connector.
• Error has occurred. • Connect the MPB and check
robot settings in SYSTEM mode.
• Check if "ERR" LED is lit on
front of controller.
• No DC24V supply. • Check that DC 24V is supplied
from standard. I/O interface
connector.
• Check DI04 on MPB screen.
• Check that DC 24V is supplied
for option I/O interface.
• Problem in signal • Check wiring on standard I/O
connection. interface connector.
• Check wiring on option I/O
interface connector.
• Error in option I/O • Check the option I/O interface
interface setting. setting on the DIP switch.
• Error has occurred. • Connect the MPB and check
the error information.
• Check if "ERR" LED is lit on
front of controller.
2. Troubleshooting
Check items Corrective action
• Supply DC 24V.
• Make the correct wiring on
standard I/O interface
connector.
• Check the cause from the
error information.
• Eliminate the cause of the
error.
• Supply DC 24V.
• Make the correct wiring on
standard I/O interface
connector.
• Check the cause from the
error information.
• Eliminate the cause of the
error.
• Supply DC 24V.
• Make the correct wiring on
standard I/O interface connector.
• Make the correct wiring on
option I/O interface connector.
• Make the correct option I/O
interface setting.
• Check the cause from the
error information.
• Eliminate the cause of the
error.
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