Configuring Hardware and Communication Connections STEP 7.pdf

3.8.2 Example of Configuring Direct Data Exchange
The configuration for the example is as follows:
Task
Procedure
• CPU 417-4 as DP master
• CPU 316-2 DP as receiver
• CPU 318-2 DP as publisher
Configuring the Distributed I/O (DP)
CPU 318-2 DP sends 8 words of consistent data to the DP master.
CPU 316-2 DP receives the first two bytes of these data.
1. Configure three stations, each with the CPUs listed. Then, assign meaningful
names to them such as "DP master station", "receiver station", and "publisher
station".
2. Configure the publisher and receiver station as intelligent slave:
- Double-click the DP master row.
- Select the Operating Mode tab.
- Select the DP Slave option.
3. In the master station:
- Drag the icon for CPU 31x 2-DP from the "Catalog" window (PROFIBUS-
DP, "Already Configured Stations" folder) to the DP master system.
The DP Slave Properties dialog box appears with the "Connection" tab.
- Select a slave in the Configured Slave Controllers box and click the
"Connect" button. Then confirm with "OK".
- Repeat the procedure in order to connect the second station that was
configured as an intelligent slave to the master system.
Configuring Hardware and Communication Connections with STEP 7
A5E00706939-01 3-47