Omron C200HW-CORT21, Руководство по эксплуатации

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Troubleshooting
Section 5-2
51
Start-up problems
Description Possible cause Possible remedy
No LEDs are ON or
Blinking. The PLC’s power is off. Turn the PLC’s power supply on.
The Unit is defective. Replace the C200HW-CORT21.
The RUN LED is
Blinking. The same Unit number has been set on
another Special I/O Unit, causing an I/O UNIT
OVER error in the PLC. Make sure that the same Unit number is not
used by more than one Special I/O Unit and
restart the PLC.
I/O table verification error. A Unit has been
removed or the Unit number setting has been
changed that caused an I/O SET ERR error in
the PLC. Verify the I/O table and/or register the I/O
table again.
Another Special I/O Unit or Interrupt Input Unit
has not been initialised, causing a CPU
WAIT’G error in the PLC. Check and/or remove the defective Unit.
The Unit is defective. Replace the C200HW-CORT21.
ERR LED is ON. A fatal error was detected at start-up.
The cause is reported in IR n+3.13, IR n+3.14 Try to solve the cause and restart the Unit. If
this does not help, replace the Unit.
Message communication problems
Description Possible cause Possible remedy
IOWR instruction
not successfully
executed. The IOWR instruction contains syntax errors.
(EQ-flag is not set) Check if the correct Machine number and
message length is specified in the IOWR
instruction.
The control code is invalid or the specified
message length does not relate to the function
indicated by the control code. (EQ-flag is not
set).
The contents of the message is invalid.
Read the error log to find out the cause.
Check if the control code equals to #0003 or
#0004.
Check the message length.
Check the contents of the message.
The Unit is defective. Replace the C200HW-CORT21.
IORD instruction not
successfully
executed. The IORD instruction contains syntax errors.
(EQ-flag is not set) Check if the correct Machine number and
message length is specified in the IORD
instruction.
The control code is invalid or the specified
message length does not relate to the function
indicated by the control code (EQ-flag is not
set). Read the error log to find out the cause.
Check if the control code equals to #0000.
Check the message length.
The Unit is defective. Replace the C200HW-CORT21.
User defined CAN
message is not
received by another
node. The wrong identifier or data length was set in
the IOWR message structure. Compare the identifier of the receiving node
with the one specified in the IOWR message
structure.
Check if the data length corresponds with the
amount of data bytes that the receiving node
expects to receive.
The network cabling is not correct. Check the error log. If the error log indicates
that the Unit was unable to transmit the
message, then check if the correct pins of the
bus connector are connected (see section 2-
1-5), if there are no short circuits, if the stub-
lines are not too long, and if the network is
terminated at the appropriate places (see
section 2-3).
The Unit operates on a different baud rate than
the other node on the network. Configure all the units on the network to the
same baud rate.