Mitsubishi QJ71E71-100 Series, Руководство пользователя

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MELSEC-Q
6 DEDICATED INSTRUCTIONS
Receive data
Device Item Set data Setting range
Set by (
1
)
(D1) + 1
to
(D1) + n
Receive data
This stores the contents ( attached file) of the
received e-mail.
— System
POINT
The receive data storage device (D1) requires a contiguous free area equal to or
greater than the receive data length ((S) + 9) (maximum of 6517 words).
1 The "Set by" column indicates the following:
• User: Data is set by the user before executing a dedicated instruction.
• System: The PLC CPU stores the execution result of a dedicated instruction.
2 The following shows a description of the processing after the MRECV instruction is
executed by selecting the execution type.
Setting option Description of processing Merit Demerit
Do not inquire
(Do not read)
• Execute only the read processing
of e-mails from the mail server.
• Inquire (read) about information
on receive mails remaining on
the mail server after the time set
in a GX Developer parameter
has elapsed.
No extra read
processing is executed
when there are no mails
on the mail server.
Even if mails remain on the mail
server, they cannot be read
immediately.
Mails tend to accumulate on the
mail server.
Inquire (Read)
• Execute the read processing of
e-mails from the mail server.
• After executing the MRECV
instruction, the inquiry (read)
processing of information on
receive mails remaining on the
mail server is also executed.
(Inquire whether or not mails are
received immediately.)
Receive mails stored on
the mail server can be
read in succession.
Inquiries to the mail server are
more frequent.
More processing in the module
affects other internal processing.
3 For a list of error codes , see Section 11.3.3 of the Q Corresponding Ethernet
Interface Module User's Manual (Basic)
Functions
(1) This instruction reads receive mails from the mail server.
Destination mail address
Header (Subject, etc)
Main text
Attached file
Attached file
Header
Buffer memory
×
Mail server Ethernet module
MRECV "Un" (S) (D1) (D2)
CPU module