User Manual

Easy to communicate between devices

7.5 PROFINET

Easy Book

Manual, 03/2014, A5E02486774-AF

137

As shown in the following example, you can also use individual TSEND and TRCV

instruction to communication over a connection created by a TSEND_C or TRCV_C

instruction. The TSEND and TRCV instructions do not themselves create a new connection,

so must use the DB and connection ID that was created by a TSEND_C, TRCV_C or TCON

instruction.

①

TSEND_C on CPU_1 creates a

connection and assigns a connection

ID to that connection (ID=1).

②

TRCV_C on CPU_2 creates a

connection and assigns the

connection ID to that connection o

CPU_2 (ID=1).

③

TSEND and TRCV on CPU_1 use the

connection ID created by the

TSEND_C on CPU_1 (ID=1).

TSEND and TRCV on CPU_2 use the

connection ID created by the TRCV_C

on CPU_2 (ID=1).

7.5.1.3

Parameters for the PROFINET connection

The TSEND_C, TRCV_C and TCON instructions require that connection-related parameters

be specified in order to connect to the partner device. These parameters are assigned by the

TCON_Param structure for the TCP, ISO-on-TCP, and UDP protocols. Typically, you use the

"Configuration" tab of the "Properties" of the instruction to specify these parameters. If the

"Configuration" tab is not accessible, then you must specify the TCON_Param structure

programmatically.