Scenario 2A - Communication Via Parameterized Ouc (Single Instructions) And Internal Cpu Interface; Mode Of Operation - Siemens SIMATIC S5 Manual

2 Engineering
Scenario 2a – Communication via parameterized OUC
2.3
(single instructions) and internal CPU interface
2.3.1

Mode of operation

Overview
In this scenario, the SIMATIC S7-1500 CPU actively establishes an ISO-on-TCP
connection to the S5 via the CP1430 TCP using the integrated PROFINET
interface.
On the S7-1500 CPU end, a parameterized connection configuration is used. The
data are sent and received bidirectionally via the OUC blocks TSEND and TRCV.
For this connection, the SIMATIC S5 uses the standard handling blocks (HTB)
SYNCHRON/SEND/RECEIVE. In the CP1430 TCP, the ISO-on-TCP connection in
the SIMATIC S5 is configured as a "passive" duplex connection.
Flow chart
Sequence of the parameterized OUC communication via single instructions
The figure below schematically shows the connection established and the data flow
between SIMATIC S5 and SIMATIC S7-1500 using the parameterized SEND and
RECEIVE mechanism via ISO-on-TCP.
SIMATIC S5 CPU
OB1
FB40
RECEIVE
RECEIVE
Ethernet Communication (ISO on TCP) between SIMATIC S5 and
SIMATIC S7-1500 Controllers
Entry-ID: 109482475, V1.2,
HTB
SYNCRON
SEND
1
SEND job trigger
HTB
SEND
2
SEND
Value 1
ALL
Value 2
...
...
...
RECEIVE
HTB
3
Value 1
Value 2
...
...
ALL
...
07/2019
SIMATIC S7-1500 CPU
Conn.
CP1430
CPU 1500
establish.
TCP
PNIO SS
CR
Connection
Connection
configuration configuration
CC
ID 105
A_NR
TSAP 1
TSAP 1
SEND/RCV
SEND/RCV
...
Data
Acknowledgment
Acknowledgment
OB1
RECEIVE
...
TRCV
Value 1
Value 2
...
...
...
...
SEND
TSEND
Value 1
Value 2
...
...
...
...
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