Mitsubishi Electric MELSEC iQ-F Series User Manual page 42

Precautions
The following lists the precautions on the e-mail setting change function.
• If e-mail messages are sent consecutively, the SMTP server may not be accessed. If a connection error occurs, send e-
mail messages at large intervals.
• No error code can be identified in some cases, such as where no external device could be found when the Ethernet module
tried to send an e-mail. An error code that can be identified for the e-mail send function is stored in 'Error code' (Un\G4377).
For details on possible error codes, refer to the following.Page 110 List of Error Codes
• Do not send safety-related data because e-mail messages will not be sent if a power-off of the programmable controller
occurs while attempting to send e-mail messages.
• For the minimum time interval of access to the mail server when sending e-mails, check with the system administrator.
Frequent access may be prohibited depending on the security settings of the mail server.
• To avoid being asked to take responsibility for sending e-mail messages to unintended destinations and avoid being
charged for a large amount of money resulting from an unintended amount of data transmission, check the settings of the
module parameters and module function blocks configured in the engineering tool or buffer memory before sending e-mail
messages.
• If e-mail messages cannot be sent in ways other than the instructions in "E-mail settings", check for setting errors in the
network connection, module parameters, and module function blocks. (Page 82 E-mail settings)
• If the NULL code is included in a position other than the end of the message body in the e-mail sending function block, the
error code (1968H) may be generated. Therefore, configure the settings so that the NULL code is not included in a position
other than the end of the message body.
• If a character code not specified in the message body is included in the e-mail sending function block, the appearance of
the message body data may be corrupted at the e-mail destination.
■Power-off and CPU module reset
Do not power off the system or reset the CPU module while writing to or clearing the e-mail setting storage area. Otherwise,
values may not be reflected to the e-mail setting storage area.
Powering off the system or resetting the CPU module is not required after writing to or clearing the e-mail setting storage area.
■E-mail settings configured with the parameters
For the e-mail settings of the Ethernet module, priority is given to the values stored in the e-mail setting storage area over the
values configured with the module parameters.
Whether the e-mail setting change function is enabled can be checked with 'E-mail setting change function enable flag'
(Un\G4374).
To use the e-mail settings configured with the module parameters, clear the e-mail setting storage area.
■Execution timings of write processing and clear processing
When operating 'E-mail setting storage area write request' (Un\G4370) or 'E-mail setting storage area clear request'
(Un\G4372) in such a way as turning it on, off, and on or turning it off, on, and off at short intervals, the operation results and
the values in the operation result storage buffer memory may not match. Therefore, if operating an e-mail setting storage area
write request or clear request at short intervals, check in advance that b0 of 'E-mail setting area write completed' (Un\G4371)
or b0 of 'E-mail setting area clear completed' (Un\G4373) has turned on.
If both 'E-mail setting storage area write request' (Un\G4370) and 'E-mail setting storage area clear request' (Un\G4372) are
turned off and on, the write processing or clear processing may not be executed.
■Failure of writing to or reading from the e-mail setting storage area
If writing to or reading from the e-mail setting storage area fails, the error code (1813H) is stored in the event history, and the
e-mail settings configured with the module parameters are set to the Ethernet module.
■Exclusive control of the e-mail sending process and the e-mail setting change function
Do not perform an operation to execute the e-mail setting change function while the e-mail sending process is in progress.
Similarly, do not send an e-mail while the e-mail setting change function is being executed.
Otherwise, the operation performed later fails with an error (Error code: 1815H).
4 FUNCTION LIST
40
4.3 Other Functions