Rockwell Automation Allen-Bradley DriveLogix 5730, Руководство пользователя

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6-26 Communicating with Devices on an EtherNet/IP Link
To include “To:”, “From:”, and “Subject:” fields in the email, use
<CR><LF> symbols to separate each of these fields. The “To:” and
“From”” fields are required; the “Subject:” field is optional. Use a second
set of <CR><LF> symbols after the last one of these fields you enter. For
example:
To: email address of recipient $r$l
From: email address of sender$r$l
Subject: subject of message $r$l$r$l
body of email message
Use the “From” address to specify where the mail relay server can send an
undeliverable email message.
The maximum length of an email message is 474 characters. An additional
4-byte string-length value is added to the tag. As a result, the maximum
source length is 478 characters.
Entering Ladder Logic
You need two MSG instructions. One MSG instruction configures the mail
server. This only needs to be executed once. The second MSG instruction
triggers the email transmission. This can be executed as often as needed.
Important: Be careful to write the ladder logic to ensure the MSG
instructions are not continuously triggered to send email
messages.
This is an example of the basic MSG logic. You can build more complex logic that automatically
manages the Source Lengthes within the MSG blocks. Refer to
Using Ladder Logic to Dynamically
Configure Messages on page 6-30 .