Configuring Hardware and Communication Connections STEP 7.pdf

Configuring Connections
12.12.5 Programming Devices / PCs as Connection Partners
If you want to configure connections for an end point on a programming device or
PC, you have various options. Select either the "PG/PC" object or the "SIMATIC
PC Station" object in the network view:
• "SIMATIC PC Station" for applications that use configuration files (*.xdb files)
for communication to a SIMATIC S7 station, for example:
- For redundant connections with the optional package S7-REDCONNECT
(fail-safe S7 communication) or
- For SAPI-S7 interface
- For OPC server
Please check in the product information of the SIMATIC NET product to see if
configuration by means of a configuration file is possible.
• "PG/PC" for applications that use LDB files for communication to a SIMATIC S7
station (SAPI-S7 interface)
12.12.5.1 S7 Connection to a PG/PC
An S7 connection from an S7 station to a PG/PC is only possible if the PG/PC has
an SAPI-S7 programming interface (C programming interface for access to
SIMATIC S7 components) or an OPC Server.
You will find more information on filling out the dialog box in the online help for this
dialog.
For the Connection Partner "PG/PC"
One method of configuring connections is by creating an LDB (local database):
1. Configure the PG/PC in the network view.
2. Configure the station from which a connection should go to the PG/PC.
3. When you create the S7 connection you must select "PG/PC" as the
connection partner.
4. Edit the "Address Details" dialog box (accessible via the properties of the
connection). In this dialog box you enter the name of the connection and the
virtual field device name of the programming device/PC. You will find more
information in the online help for this dialog box.
5. Then double-click the configured programming device/PC and generate the
local database (LDB).
6. Transfer the database to the programming device/PC.
7. Download the connection(s) to the station.
For the Connection Partner "SIMATIC PC Station"
For the programming device/PC you create a SIMATIC PC station in the network
view. The "Application" forms the end point of a connection with this station type.
Configuring Hardware and Communication Connections with STEP 7
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