103BCommunication
10.3 PROFIBUS
S7-1200 Programmable controller
System Manual, 11/2011, A5E02486680-05
449
10.3.2.2
Configuring logical network connections between two PROFIBUS devices
After you configure the CM 1243-5 (DP master) module, 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 the PROFIBUS connection,
select the purple (PROFIBUS) box on the first device. Drag a line to the PROFIBUS box on
the second device. Release the mouse button and your PROFIBUS connection is joined.
Refer to "Device Configuration: Creating a network connection" (Page 117) for more
information.
10.3.2.3
Assigning PROFIBUS addresses to the CM 1243-5 module and DP slave
Configuring the PROFIBUS interface
After you configure logical network connections between two PROFIBUS devices, you can
configure parameters for the PROFIBUS interfaces. To do so, click the purple PROFIBUS
box on the CM 1243-5 module, and the "Properties" tab in the inspector window displays the
PROFIBUS interface. The DP slave PROFIBUS interface is configured in the same manner.
Table 10- 37 Configuring the CM 1243-5 (DP master) module and ET200 S DP slave PROFIBUS
interfaces
CM 1243-5 (DP master) module
ET200 S DP slave
①
PROFIBUS port
Assigning the PROFIBUS address
In a PROFIBUS network, each device is assigned a PROFIBUS address. This address can
range from 0 through 127, with the following exceptions:
●
Address 0: Reserved for network configuration and/or programming tools attached to the
bus
●
Address 1: Reserved by Siemens for the first master
●
Address 126: Reserved for devices from the factory that do not have a switch setting and
must be re-addressed through the network
●
Address 127: Reserved for broadcast messages to all devices on the network and may
not be assigned to operational devices
