Siemens SIMATIC ET 200AL - Page 757

Open User Communication
6.3 Instructions for Open User Communication
Communication
Function Manual, 12/2017, A5E03735815-AF
71
The following table shows you the different connections of the Secure Open User
Communication and the matching system data types and instructions.
Secure OUC connection
System data type
Instructions
Secure TCP connection from an
S7-1500 CPU as TLS client to a
third-party PLC (TLS server)
Secure TCP connection from an
S7-1500 CPU as TLS server to a
third-party PLC (TLS client)
• TCON_QDN_SEC • TSEND_C/TRCV_C
• TCON
Secure TCP connection between
two S7-1500 stations
• TCON_IP_V4_SEC
1
Secure connection to a mail serv-
er
2
• TMAIL_V4_SEC
• TMAIL_QDN_SEC
• TMAIL_C (V5.0 or higher)
Secure Modbus TCP connection
• TCON_IP_V4_SEC
1
• MB_Client
• MB_Server
• TCON_QDN_SEC
1
Also possible for CP 1543-1
2
Secure connection to a mail server also possible with CP1543-1 und TMAIL_C (V4.0)
Setting up the connection with connection configuration
When setting up through the configuration of the connection, the address parameters of the
connection are specified in the hardware and network editor of STEP 7.
To send and receive the data, use the same instructions as when the connections are set up
by programming:
Table 6- 4 Instructions for sending/receiving with configured connections
Protocol
Send/receive with configured connections
Supported instructions:
TCP
Send/receive data via:
• TSEND_C/TRCV_C or
• TSEND/TRCV or
• TUSEND/TURCV
ISO-on-TCP
ISO according to ISO/IEC 8073
(Class 4)
UDP Send/receive data via:
• TSEND_C/TRCV_C or
• TUSEND/TURCV
FDL Send/receive data via:
• TSEND_C/TRCV_C or
• TSEND/TRCV or
• TUSEND/TURCV
Modbus TCP
Not supported
E-mail
Not supported
FTP
Not supported