Siemens S7-300 appendix Real installation, Configuration in Step

Communication

3.2 Communication services

Routing: Example of a TeleService application

The figure below shows the example of an application for remote maintenance of an S7 station using a PG. The connection to other subnets is here established via modem connection.

The lower section of the figure shows how to configure this in STEP 7.

	e.g. 31xC-2DP	e.g. 31xC-2DP
Real installation	DP master	DP slave

PG

	TeleService
					Subnet 2
		adapter
				(e.g. PROFIBUS DP)
Modem	Modem
			Subnet 1 (e.g. MPI)

Configuration in STEP 7

e.g. CPU 31xC-2 DP	e.g. CPU 31xC-2 DP
DP master	DP slave

PG

Subnet 2 (e.g. PROFIBUS DP)

Subnet 1 (e.g. MPI)

3-14	CPU 31xC and CPU 31x, Technical data
	Manual, Edition 08/2004, A5E00105475-05