Mitsubishi Electric MELSEC iQ-F Series User Manual page 62

■Operation to clear tool settings
Setting 'Tool setting storage area clear request' (Un\G108874) to 1 (Execute) clears the tool setting storage area (in the
Ethernet module's built-in flash ROM) (disables the tool setting change function).
The following describes the procedure for clearing the tool setting storage area.
1.
Write 1 (Execute) to 'Tool setting storage area clear request' (Un\G108874).
2.
Check the clear result with the following buffer memory areas.
Buffer memory area No.
Un\G109875
Un\G109878
3.
When the clear processing is completed successfully, the module parameters in GX Works3 are immediately reflected as
Ethernet module values.
4.
Check the storage status with 'Tool setting change function enable flag (Un\G109876)'.
Buffer memory area No.
Un\G109876
If the clear processing for the tool setting storage area (in the Ethernet module's built-in flash ROM) is not
completed successfully, the error code is stored in 'Tool setting storage area clear error code (Un\G108878)'.
For details on possible error codes, refer to the list of error codes.
For details on possible error codes, refer to the following.
Page 110 List of Error Codes
■Precautions
The following lists the precautions on the function to change MQTT connection settings and tool settings.
• Power-off and CPU module reset
Do not power off the system or reset the CPU module while writing to or clearing the MQTT connection setting storage area or
the tool setting storage area (in the Ethernet module's built-in flash ROM). Otherwise, values may not be reflected to the
MQTT connection setting storage area or the tool setting storage area (in the Ethernet module's built-in flash ROM).
• Execution timings of write processing and clear processing
When operating the write or clear request in such a way as turning it on, off, and on or turning it off, on, and off at short
intervals, the write or clear processing for the MQTT connection setting storage area or the tool setting storage area (in the
Ethernet module's built-in flash ROM) may not be executed.
While the write processing is being executed, if the write request is operated 0  1 again, the write processing of the first
operation is completed successfully, and the second write request operation is ignored. (Similarly, the clear request operation
is also ignored.)
While the write processing is being executed, if the clear request is operated 0  1, the clear request operation fails.
(Similarly, performing the write request operation while the clear processing is being executed results in a failure.)
If both the write and clear requests are operated 0  1 simultaneously, priority is given to the write request, and the clear
request operation fails.
• Buffer memory update for the setting value (password)
The current setting value of the Ethernet module is not reflected to the buffer memory when the system is powered off and on
or when the CPU module is reset. This is because passwords for MQTT connection settings/tool settings are different from
other setting values from a security perspective. In addition, when the write execution is completed, the value in the buffer
memory is cleared to 0.
4 FUNCTION LIST
60
4.3 Other Functions
Name
Tool setting storage area clear status
Tool setting storage area clear error code
Name
Tool setting change function enable flag
When completed successfully
b0: 1 (Completed)
b1: 0 (Normal)
0
Description
0: Setting values from GX Works3
1: Setting values registered to a flash ROM by using the buffer memory
When completed with an error
b0: 1 (Completed)
b1: 1 (Error)
Error code