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Siemens Simatic S7-300 Memulai
Learning units

3.4 3. Step: Changing the transmission rate at the MPI/DP interface

3.4
3. Step: Changing the transmission rate at the MPI/DP interface
Procedure
Step
Activity
1
In the mounting rail, double-click "MPI/DP" to open the
MPI/DP interface (X1) in the HW Config.
2
Click the "Properties" button.
3
Click MPI(1) and then click "Properties".
4
Select the "Network settings" tab and select a transmission
speed of "1.5 Mbps".
5
Confirm all open dialog boxes with "OK".
6
Select the Target system > Load to module menu command
in order to transfer the configuration in the STOP mode of
the CPU.
In the dialog box "Select target module", select the CPU and
confirm with "OK".
7
Confirm with "OK".
3.5

4. Step: Vital settings in your DP (DRIVE) configuration

Procedure
Step
Activity
1
In the mounting rail, double-click "DP(DRIVE)" to open the
"Properties - DP(DRIVE)" dialog box in the HW Config.
2
Click the "Properties" button.
3
Enter PROFIBUS address "2".
4
Click "New" to create a new PROFIBUS subnet.
5
In the "Network settings" tab, set the transmission rate of
the PROFIBUS network. Enter a rate of 12 Mbps.
Maintain the "DP" profile setting of the subnet.
6
Click "OK" to confirm all open dialog boxes of HW Config.
16
Result
The "Properties - MPI/DP" dialog box opens.
The "Properties – MPI interface MPI/DP"
dialog box opens.
The "Properties - MPI" dialog box opens.
You have now increased the configured
transmission speed of the MPI interface at
the CPU in order to accelerate data transfer.
The "Select node address" dialog box
opens.
The default transmission rate of the MPI
interface is 187 kbps, i.e. the PG/PC
interfaces must be set up as described
earlier in the requirements section.
The data are now downloaded from the
PG/PC to the CPU.
Result
The "Properties – DP(DRIVE)" dialog box
opens.
The "Properties – PROFIBUS interface
DP(DRIVE)" dialog box opens.
The "Properties – New PROFIBUS subnet"
dialog box opens.
CPU 317T-2 DP: Controlling a physical axis
Getting Started, 03/2008, A5E00251786-05