Communication
11.2 PROFINET
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
867
Legacy TCON, TDISCON, TSEND, and TRCV instructions
Prior to the release of STEP 7 V13 SP1 and the S7-1200 V4.1 CPUs, the TCON, TDISCON,
TSEND, and TRCV instructions could only work with connection parameters with structures
according to "TCON_Param". The general concepts apply to both sets of instructions. Refer
to the individual legacy TCON, TDISCON, TSEND, and TRCV instructions for programming
information.
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
e 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-
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.
To verify the version of a TCON, TDISCON, TSEND, or TRCV instruction in a program, you
must inspect project tree properties and not the properties of a box displayed in the program
editor. Select a project tree TCON, TDISCON, TSEND, or TRCV FB or FC instance, right-
click, select "Properties", and select the "Information" page to see the TCON, TDISCON,
TSEND, or TRCV instruction version number.
To Next Page
Loading...
