Plc Write, Plc Read; Boot Operation - Mitsubishi Electric FX5UC-96MT/D User Manual

PLC write, PLC read

PLC write cannot be performed
If data cannot be written to the CPU module from the engineering tool, check the following items.
Item to check
Check if a password is not registered.
When an SD memory card is the write destination, check that the write
protection is not applied to the card.
When an SD memory card is the write destination, check that the card is
formatted.
Check that the size of the write data does not exceed the memory capacity.
If writing still cannot be performed even after the items shown above are checked, there may be a hardware issue. Consult
your local Mitsubishi Electric representative.
Reading from the PLC cannot be performed
If data cannot be read from the CPU module to the engineering tool, check the specification of the target memory to be read.
Check the memory and reset the CPU module. Then try PLC read again.
If reading still cannot be performed, there may be a hardware issue. Consult your local Mitsubishi Electric representative.
The program is unintentionally overwritten
The boot operation may be being performed. Read the parameters and review the boot file settings with the engineering tool.
If the boot operation is not being performed, there may be a hardware issue. Consult your local Mitsubishi Electric
representative.
For details on the boot operation, refer to MELSEC iQ-F FX5 User's Manual (Application).

Boot operation

Boot operation cannot be performed from the SD memory card
Item to check
Check for errors in the CPU module.
Check that the file is set in the boot file settings of the parameters.
Check that the file is set in the program file settings of the parameters.
Check that the file to run is stored in the SD memory card.
If the boot operation cannot be performed even after the items shown above are checked, there may be a hardware issue.
Consult your local Mitsubishi Electric representative.
9 TROUBLESHOOTING
148
9.7 Troubleshooting for Each Symptom
Action
Authenticate a password using the engineering tool.
Remove the write protection from the SD memory card.
Page 176 SD Memory Card
Format the SD memory card.
• Ensure sufficient empty capacity.
• Clear the memory to which the data is to be written.
Action
Remove the cause of the error.
Set the file in the parameters.
Store the file to run.