Troubleshooting By Symptom - Mitsubishi Electric NZ2MFB2-16A User Manual

11.3

Troubleshooting by Symptom

Perform troubleshooting by symptom when the I/O module does not operate properly with no error.
Check the following items in the order from the top.
When the ON/OFF status of an external input cannot be read
Check item
Is the corresponding LED (X0 LED to X1F LED) of the input module and I/O
combined module on when an external input device is on?
Is the setting of the refresh device correct?
Is data link established?
(Check the data link status on the CC-Link IE Field Network Basic
diagnostic window.)
When the ON/OFF status of an external output cannot be changed
Check item
Is the I/O PW LED turned on?
Is the corresponding LED (Y0 LED to Y1F LED) of the output module and I/
O combined module on when an external output signal RY0 to RY1F is
turned on?
Is the setting of the refresh device correct?
Is data link established?
(Check the data link status on the CC-Link IE Field Network Basic
diagnostic window.)
When "Communication Setting Reflection of Slave Station" does not work
Check item
Is the IP address setting switch of I/O module set to 0?
Is the MAC address for the selected I/O module correct?
11 TROUBLESHOOTING
80
11.3 Troubleshooting by Symptom
Action
If the LED does not turn on, there is a problem on the input wiring.
Check the wiring confirming that the input wiring is not disconnected or short-
circuited, or the voltage of the input signal is correct.
For the rated input voltage, check the rated input voltage column of each I/O
module specifications.
Page 16 Input module
Page 31 I/O combined module
Refer to the following as well.
Page 81 Troubleshooting for input circuit
Check the refresh parameter and correct the setting of the refresh device so that
it matches with the setting in the program. For the setting of the refresh
parameters, refer to the following.
 CC-Link IE Field Network Basic Reference Manual
Determine the error factor by the CC-Link IE Field Network Basic diagnostic
window or LED status of I/O module, and take action.
Action
Take corrective action according to the following.
Page 77 When the I/O PW LED does not turn on
If the LED turns on, there is a problem on the output wiring.
Check the wiring confirming that the output wiring is not disconnected or short-
circuited.
Refer to the following as well.
Page 86 Troubleshooting for output circuit
Check the refresh parameter and correct the setting of the refresh device so that
it matches with the setting in the program. For the setting of the refresh
parameters, refer to the following.
 CC-Link IE Field Network Basic Reference Manual
Determine the error factor by the CC-Link IE Field Network Basic diagnostic
window or LED status of I/O module, and take action.
Action
Set the IP address setting switch of I/O module to 0 and execute
"Communication Setting Reflection of Slave Station" again.
Check that the MAC address for the selected I/O module matches with the MAC
address for the target I/O module, and execute "Communication Setting
Reflection of Slave Station" again.