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MELSEC-Q
2 USING THE E-MAIL FUNCTION
2.1.2 Sending e-mail using the PLC CPU monitor function
(1) Monitor function of the PLC CPU
The monitor function of the PLC CPU is used to regularly monitor the status of
the PLC CPU and device values, and send e-mail to the designated external
device when they match with the notification conditions (PLC CPU status and
device values) set by the user.
External device
Sending e-mail using the PLC CPU
monitor function (notification setting)
(
1
)
Ethernet module
(MRECV
instruction)
PC
Portable terminal
(device that
cannot handle
attached files)
Remark
Subject
(
2
)
—
Binary format
Binary to ASCII conversion
Attached
file
Binary to CSV conversion
Maximum 960 words
Main text
Binary to ASCII conversion
Maximum 960 words.
1 For the notification of CPU status monitoring, only the Subject (that stores the
PLC CPU status) will be sent.
2 The Ethernet module receives the Subject without decoding.
(a) The PLC CPU in the Ethernet module loaded station is monitored for every
CPU inquiry time interval set by the user. The following information can be
registered as the notification conditions.
1) Device monitoring of the PLC CPU
• Monitoring the numeric values stored in the word device
• Monitoring the bit device ON/OFF status
2) Monitoring of the PLC CPU status
• Monitoring the CPU module status (RUN/STOP/PAUSE)
(b) The device monitoring result of the PLC CPU is sent by either the main text
or attached file of e-mail.
1) The attached file is sent by converting the device monitoring data into
binary/ASCII/CSV data format.
2) The main text is sent by converting the device monitoring data into
ASCII format.
(c) As for the status monitoring result of the PLC CPU, only the Subject (that
stores the PLC CPU status) is sent.
(d) When more than one send mail address are specified in the notification
setting, the smallest numbered address is set in the "To" field of the mail
header.
The other addresses are set into the "Cc" field for transmission.
(2) Data conversion method used by the Ethernet module
The following shows the data conversion method used by the Ethernet module.
Ethernet
module
Subject
(binary data)
Main text
(binary data)
(binary data)
(ASCII data)
(CSV data)
Encode
(Base64)
server
(ASCII data)
Attached file
(binary data)
(ASCII data)
Encode
(7bit)
Encode
(Base64/7bit)
CPU monitoring
Содержание QJ71E71-100 Series
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