Configuring Hardware and Communication Connections STEP 7.pdf

Configuring PROFINET IO Devices
4.4 Placing PROFINET IO Devices in Operation
4.4.1 Accessing PROFINET IO Devices Online via Ethernet
Requirements
You have set up the programming device (PG)/PC interface to work with a TCP/IP
interface card, which means that the Ethernet interface of your programming
device (PG)/PC can be accessed from STEP 7.
Be sure to observe the guidelines for connecting your programming device
(PG)/PC to the CPU. For CPU 317-2 PN/DP, both devices (CPU and PG/PC) must
be connected to one switch.
It may be necessary to adjust the properties of the Ethernet interface in the Control
Panel of the programming device (PG) (the properties of the Internet Protocol
(TCP/IP)). If, in addition to the programming device (PG), you have only connected
S7-CPUs and PROFINET IO devices, you must not enable the "Obtain an IP
address automatically" option in Windows.
Online access as with MPI or PROFIBUS
The commands in the "PLC" menu used to establish online access to IO devices
can be used in all applications that provide this menu, such as in HW Config, in the
SIMATIC Manager and in NetPro.
In general, you have the same options via Ethernet (PROFINET) as you do with
other online paths (MPI or PROFIBUS).
Exceptions
Special functions not available over PROFINET:
• The menus available through PLC > PROFIBUS only apply to PROFIBUS
• Prepare line diagnostics (only suitable for diagnostic repeaters on PROFIBUS
DP)
Configuring Hardware and Communication Connections with STEP 7
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