Siemens SIMATIC S5 Manual page 77

2 Engineering
Function
The OUC block TSEND_C is used to actively establish a connection via the
integrated PNIO interface of the CPU by calling the FB 6
(ConnManagerParamID6). As soon as the connection is established, the data are
exchanged via the communication blocks TSEND_C and TRCV.
Via the connection, data are sent bidirectionally with a count value from the
SIMATIC S5 to the S7-1500 every second. From there, this count value is mirrored
and sent back. After the data have been received, this count value is increased by
+1 and sent again.
Note The mixed variant of the OUC blocks TSEND_C (compact instruction) and TRCV
(single instruction) used in this example scenario is recommended, if only one
connection ID shall be used for sending and receiving the data.
Further details and information concerning this mixed operation are given in the
following entry (109479564).
Block
OB 100
OB 1
FB 6
DB 35
DB 25
DB 4
DB 3
DB 100
DB 200
DB 110
DB 210
Ethernet Communication (ISO on TCP) between SIMATIC S5 and
SIMATIC S7-1500 Controllers
Entry-ID: 109482475, V1.2,
Symbol
Startup
Main
ConnManagerProgID6
InstConnManagerProgID6
ConnectParamID6
InstTSEND_C_ID6
InstTRCV_ID6
ParaDbID6_TSEND_C
ParaDbID6_TRCV
DataTSEND_C
DataTRCV
07/2019
Description
Startup OB
Cyclic OB
Management TSEND_C ID 6
Connect parameter ID 6
Instance DB TSEND_C ID 6
Instance DB TRCV ID 6
Parameter DB TSEND_C
Parameter DB TRCV
Send data area
Receive data area
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