Siemens Simantic Net NCM for Industrial Ethernet S7 User Manual

Page 21

Communication via Ethernet CPs in S7 Stations

SIMATIC NET NCM S7 for Industrial Ethernet
C79000-G8976-C129–06

1.3.1

PG Communication with STEP 7 over Industrial Ethernet

Requirements for PG Communication

PG communication is possible when the following requirements are met:

An Ethernet CP is installed in the PG or engineering station or there is a
modem/ISDN interface for remote access.

The Ethernet CP must have an address (default MAC address or set the IP
address).

Networking the PG / Engineering Station

Depending on the configuration of the PG or Engineering Station, the following two
situations are possible when using PG communication:

PG / Engineering Station in the Configured Mode

If you select this configuration when you commission the PG / engineering
station, the interfaces of the communication modules you are using are already
known. The option in “Set PG/PC Interface” is automatically set to
“PC-internal”.

Once you have downloaded this configuration to your PG / engineering station,
you can exchange PG functions with the accessible nodes in the network with
STEP 7 without requiring any further settings.

PG / Engineering Station in PG Operation

If your PG or engineering station is configured for this mode, you must specify the
interface on the PG or engineering station explicitly with “Set PG/PC Interface”.

Follow the steps outlined below:

1. Open the “Set PG/PC Interface” dialog box in the Windows Control Panel.

2. Set the PG/PC interface according to the CPs available on your PG and

according to the bus attachment (interface parameter assignment used).

For more detailed information on the topic of PG operation and engineering station,
refer to /4/.