Siemens CP 243-1 - Types of Communication; E-Mails

Application and properties
1.6 IT communication
CP 243-1
20 Operating Instructions, 03/2012, C79000-G8976-C244-02
Ethernet
HTTP
CPU 2xx
CP 243-1
...
S7-200
...
HTTP
bro w ser
4x
FTP
serve r
FTP
clie n t
E-mail
serve r
E-mail
serve r
FTP
FTP
SMTP
Figure 1-2 Overview of the IT functions
1.6.2 Types of communication
In addition to the S7 communication relations described in chapter Types of communication
(Page 15), the CP 243-1 allows four types
of IT communication relations that can be used
individually or as a combination.
1. Communication with an e-mail server
2. Communication with an FTP client located on a remote system.
3. Communication with an FTP server. Such a server is typically located on a remote
system. A link to the FTP server running on the CP 243-1 of the local S7-200 system is
also possible.
4. Communication with up to four Web browsers running on remote systems
1.6.3 E-mails
How it works
The SMTP protocol controls the transfer of e-mails. An e-mail consists of one or two address
fields, a subject field and a field for the actual text message.