Configuring An Opc Client - Siemens SIMATIC PCS 7 Function Manual

4.3

Configuring an OPC client

OPC client engineering within PCS 7
OPC client engineering is not part of the PCS 7 engineering. No PC station is inserted and
configured in the SIMATIC Manager. In the SIMATIC Manager, only the OpenPCS 7 station
is configured.
Note
If you want to use the SIEMENS OPC Automation Interfaces, the OPC client must be
executed either on the OpenPCS 7 station or you will have to take steps manually to ensure
that the required files exist and are registered on the OPC client. Refer to the section "
Configuring an OPC client computer".
OPC client configuration outside PCS 7
An OPC client communicates with the OpenPCS 7 station via a network connection. We
recommend that you install a firewall between the OPC client and the OpenPCS 7 station if
the OPC client is on a non-secure network. So that communication between the OPC client
and OpenPCS 7 station works correctly, you need to configure the firewall and configure the
DCOM settings on the PC on which the OPC client is being executed. You will find the relevant
settings in the documentation of the OPC client and the firewall.
Note
The DCOM and firewall settings for the Windows operating system are described in the
documentation "Using OPC via DCOM with Microsoft Windows XP Service Pack 2" from the
OPC Foundation.
Note
If you want to use an OPC client on a PC without an OpenPCS 7-installation, you will need
to install the OPC proxy / stub components of the OPC Foundation. You can install these
with the "OPC Core Components 3.00 Redistributable" setup of the OPC Foundation. In this
case, you should also check the installation instructions of the OPC client vendor.
OpenPCS 7
Function Manual, 05/2012, A5E02780178-02
PCS 7 Engineering
4.3 Configuring an OPC client
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