Lenze Drive Server Bus server S7 getting started Instrukcja Użytkownika Pobierz pdf (Strona 20)

Busserv er S7

81Busserver S7 DE/EN 1.0

4.2.8 Configuration of sub-systems

If the PLC connected to the PC includes a ”routing function”, it is possible to access controllers which

are not connected to the PROFIBUS of the (master) PLC, but to the PROFIBUS of a lower-level PLC.

The below figure shows an example of such an architecture:

• In this example, the SIMATIC 400 is the master PLC and directly connected to the PC via

Ethernet.

• The SIMATIC 300 is used as sub-system to which a controller is connected via PROFIBUS.

• The master PLC and the sub-system are connected via an MPI connection.

• Please consider that both the PLCs and the PC have to be added to the STEP 7 project.

– Use the ”NetPro” STEP 7 service program to do so.

Configuration steps required

The following configuration steps have to be carried out to access the controller connected to the

sub-system (SIMATIC 300):

1. Add the master PLC manually to the configuration.

(^ 77)

2. Select the communication channel and enter the address of the master PLC.

3. Enter the CPU slot number and the mounting rack number of the sub-system.

4. Select the sub-network type (here: MPI).

5. Enter the sub-network ID (see tip on the next page).

6. Enter the address of the sub-system (MPI, TCP or H1 address).

Now you can access the sub-system. Using the scan function you can find out under which addresses

controllers have been configured i n the PLC program of the sub-system.

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Lenze Drive Server Bus server S7 getting started Instrukcja Użytkownika Strona 20