Mitsubishi Electric Melsec Q Series User Manual page 35

2 USING THE E-MAIL FUNCTION
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(f) When communication errors of e-mails cannot be checked by a dedicated
instruction, check the error codes stored in the mail send/reception error log
area of the buffer memory.
(g) If e-mails cannot be received, try one of the following.
1) Execute the MRECV instruction once.
2) Shorten the "Enquiry Interval" time in the e-mail settings of a
programming tool.
3) Check the number of incoming mails remaining on the mail server.
(Can be checked with the buffer memory address 5870
(h) When the receive data of an e-mail sent using the MSEND instruction is
abnormal (garbled characters, etc.), review the transmission data format
(binary/ASCII/CSV) designated with the MSEND instruction.
The Subject should be designated in ASCII code data. (It is not converted
to ASCII format.)
(i) Confirm with a system administrator regarding the minimum time intervals for
accessing the mail server when sending mails, reading receive mails, and
inquiring whether or not there are receive mails.
Depending on the mail server's security setting, frequent access may be
prohibited.
(j) The e-mail send/reception function using the programmable controller CPU
and the communication function using the random access buffer cannot be
used together. Only one of them can be used at a time.
The e-mail send function using programmable controller CPU monitoring
and the communication function using the random access buffer can be
used together.
(k) A Subject that has been sent by the MSEND instruction from an Ethernet
module of the following versions, cannot be received normally by the
MRECV instruction.
•
Ethernet modules with serial numbers where the first 5 digits are 03101
or less
Different methods are used for converting Subject data at send and
reception. (See Section 2.1.1 (2).)
•
When sending: Encodes the Subject and then send it.
•
When receiving: Receives the Subject without decoding it.
MELSEC-Q/L
area.)
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