Siemens SIMATIC S7-1200

Communication
11.2 PROFINET
S7-1200 Programmable controller
856 System Manual, V4.2, 09/2016, A5E02486680-AK
Connection Ethernet protocols
Every CPU has an integrated PROFINET port, which supports standard PROFINET
communications. The TSEND_C and TRCV_C and TSEND and TRCV instructions all
support the TCP and ISO on TCP Ethernet protocols.
Refer to "Device Configuration: Configuring the Local/Partner connection path (Page 807)"
for more information.
11.2.8.9
TCON, TDISCON, TSEND, and TRCV instructions
As of version V4.1 of the S7-1200 CPU together with STEP 7 V13 SP1, the CPU extends the
capability of the TCON, TDISCON, TSEND, and TRCV instructions to use connection
parameters with structures according to "TCON_IP_v4" and "TCON_IP_RFC".
For this reason, the S7-1200 supports two sets of TCON, TDISCON, TSEND, and TRCV
instructions:
● Legacy TCON, TDISCON, TSEND, and TRCV instructions (Page 868): These TCON,
TDISCON, TSEND, and TRCV instructions existed prior to version V4.0 of the S7-1200
and only work with connection parameters with structures according to "TCON_Param".
● TCON, TDISCON, TSEND, and TRCV instructions (Page 857): These TCON, TDISCON,
TSEND, and TRCV instructions provide all of the functionality of the legacy instructions,
plus the ability to use connection parameters with structures according to "TCON_IP_v4"
and "TCON_IP_RFC".
Selecting the version of the TCON, TDISCON, TSEND, and TRCV instructions
There are two versions of the TCON, TDISCON, TSEND, or TRCV instructions available in
STEP 7:
● Versions 2.5 and 3.1 were available in STEP 7 Basic/Professional V13 or earlier.
● Version 4.0 is available in STEP 7 Basic/Professional V13 SP1 or later.
For compatibility and ease of migration, you can choose which instruction version to insert
into your user program.
Do not use different instruction versions in the same CPU program.
Click the icon on the instruction tree task card to enable the headers and columns
of the instruction tree.
To change
the version of the TCON,
TDISCON, TSEND, or TRCV instructions,
select the version from the drop
-down list.
You can select the group or individual i
n-
structions.
When you use the instruction tree to place a TCON, TDISCON, TSEND, or TRCV instruction
in your program, a new FB or FC instance, depending on the TCON, TDISCON, TSEND, or
TRCV instruction selected, is created in the project tree. You can see new FB or FC instance
in the project tree under PLC_x > Program blocks > System blocks > Program resources.