103BCommunication
10.2 PROFINET
S7-1200 Programmable controller
438
System Manual, 11/2011, A5E02486680-05
You can now connect the PROFINET IO device to the CPU:
1.
Right-click the "Not assigned" link on the device and select "Assign new IO controller"
from the context menu to display the "Select IO controller" dialog.
2.
Select your S7-1200 CPU (in this example, "PLC_1") from the list of IO controllers in the
project.
3.
Click "OK" to create the network connection.
Configuring logical network connections
After you configure the rack with the CPU, you are now ready to configure your network
connections.
In the Devices and Networks portal, use the "Network view" to create the network
connections between the devices in your project. To create a PROFINET connection, click
the green (PROFINET) box on the first device, and drag a line to the PROFINET box on the
second device. Release the mouse button and your PROFINET connection is joined.
Refer to "Device Configuration: Creating a network connection" (Page 117) for more
information.
Assigning CPUs and device names
Network connections between the devices also assign the PROFINET IO device to the CPU,
which is required for that CPU to control the device. To change this assignment, click the
PLC Name shown on the PROFINET IO device. A dialog box opens that allows the
PROFINET IO device to be disconnected from the current CPU and reassigned or left
unassigned, if desired.
The devices on your PROFINET network must have an assigned name before you can
connect with the CPU. Use the "Network view" to assign names to your PROFINET devices
if the devices have not already been assigned a name or if the name of the device is to be
changed. Right-click the PROFINET IO device, and select "Assign device name" to do this.
For each PROFINET IO device, you must assign the same name to that device in both the
STEP 7 project and, using the "Online & diagnostics" tool, to the PROFINET IO device
configuration memory (for example, an ET200 S interface module configuration memory). If
a name is missing or does not match in either location, the PROFINET IO data exchange
mode will not run. Refer to "Online and diagnostic tools: Assigning a name to a PROFINET
device online (Page 636)" for more information.
