103BCommunication
10.2 PROFINET
S7-1200 Programmable controller
420
System Manual, 11/2011, A5E02486680-05
Connection Ethernet protocols
Every CPU has an integrated PROFINET port, which supports standard PROFINET
communications. The TUSEND and TURCV instructions support the UDP Ethernet protocol.
Refer to "Configuring the Local/Partner connection path" (Page 118)" in the "Device
configuration" chapter for more information.
Operations
Both partners are passive in UDP communication. Typical parameter start values for the
"TCON_Param" data type are shown in the following table. Port numbers (LOCAL_TSAP_ID)
are written in a 2-byte format. All ports except for 161, 34962, 34963, and 34964 are
allowed.
Table 10- 19 "TCON_Param" data type parameter values
TCON instruction
TCON "UDP Conn DB"
The TUSEND instruction sends data through UDP to the remote partner specified in the
"TADDR_Param" data type. The TURCV instruction receives data through UDP. After a
successful execution of the TURCV instruction, the "TADDR_Param" data type shows the
address of the remote partner (the sender).
Table 10- 20 "TADDR_Param" data type parameter values
TUSEND instruction
TUSEND "UDP ADDR DB"