Ouc Program Blocks (Cp); Validity; Program Blocks For Ouc; A.1 Validity - Siemens SIMATIC TeleControl DNP3 Configuration Manual

OUC program blocks (CP)

A.1

Validity

The functions described below are supported by the following modules:
● CP 1243-1
● CP 1243-8 IRC
● CP 1542SP-1 IRC
A.2

Program blocks for OUC

Using the program blocks for Open User Communication (OUC)
You can use the instructions (program blocks) listed below for direct communication between
S7 stations.
In contrast to telecontrol communication, Open User Communication does not need to be
enabled in the configuration because the corresponding program blocks need to be created
for this. You will find details on the program blocks in the information system of STEP 7.
Note
Different program block versions
Note that in STEP 7 you cannot use different versions of a program block in a station.
Supported program blocks for OUC
The following instructions in the specified minimum version are available for programming
Open User Communication:
● TSEND_C V3.0 / TRCV_C V3.0
Compact blocks for:
– Connection establishment / termination and sending data
– Connection establishment / termination and reception of data
Use as an alternative:
● TCON V4.0 / TDISCON V2.1
Connection establishment / connection termination
● TUSEND V4.0 / TURCV V4.0
Sending and receiving data via UDP
● TSEND V4.0 / TRCV V4.0
Sending and receiving data via TCP or ISOonTCP
Configuration - DNP3
Configuration Manual, 11/2018, C79000-G8976-C508-01
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