Mitsubishi L02CPU User Manual page 204

(d) Command examples
A response mail is returned in response to the request mail requesting to read word device D100.
• Ended normally (1995
Re: Test command
• Ended with an error
Re: Test command
(3) Response mail format (abnormal response)
If the content of the received e-mail fails to satisfy the request e-mail format, the following message is written as
an abnormal response.
(a) Subject
"Re:" is added to the beginning of the received command e-mail.
If adding "Re:" causes the command e-mail to exceed 128 one-byte characters (64 two-byte characters), the
last three one-byte characters (two two-byte characters) are deleted.
(b) Message body
The following description is sent as response mail.
The command was not able to be executed due to the following errors.
Check the contents of e-mail and send it again.
• Format error
• Data size error
• Data count error
• Unsupported command error
Since communications using the MC protocol was not permitted, the command was not able to be executed.
Check the parameters and send e-mail again.
(c) Precautions
If one of the following command mails is received, an error mail is sent.
• The start and end header and footer of a command or e-mail are unpaired.
• An abnormal value is stored in the frame subheader.
• The command size exceeds the maximum size (1024 bytes).
• Two or more commands exist in one mail.
• An incompatible command is received.
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is assumed stored in D100.)
H
Subject
<MELRET>D000 00 FF 03FF 00 0014 0000 1995</MELRET>
Subject
<MELRET>D000 00 FF 03FF 00 0014 C051 00 FF 03FF 00 0401 0000</MELRET>
Message body
Message body
Response mail