Configuring Hardware and Communication Connections STEP 7.pdf

Configuring PROFINET IO Devices
4.2 Steps For Configuring a PROFInet IO System
4.2.1 Overview: From Configuration To Cyclical Data Exchange
The following sections describe the basic steps required to place a PROFINET IO
system in operation. It tells you how to configure PROFINET components, assign
addresses and how the system starts.
Configuring an IO system in HW Config
Assign addresses
Startup
1. Assign parameters to an IO controller (i.e. CPU 317-2 PN/DP) in HW Config.
While assigning the interface parameters, assign an Ethernet subnet and an IP
address.
2. Arrange all required IO devices in the IO system ("railroad track").
3. For each IO device: check the device name, and, if necessary, change it and
set its parameters.
1. Each IO device must have the configured device name assigned to it.
2. Download the hardware configuration while the CPU is in STOP mode.
The configured IP address is automatically assigned to the PN interface (e.g. a
CPU) when the hardware configuration is downloaded.
At startup, the CPU transfers the downloaded configuration via the PN interface to
the IO devices. As with PROFIBUS DP, the "'Finished' message by modules" and
"Transfer of parameters to modules" monitoring times that are assigned as
parameters apply here as well.
At startup, the CPU can identify the IO devices by their device names and
automatically transfer the associated IP addresses.
After the addresses and parameters have been successfully transferred within the
monitoring times, the PROFINET devices start their cyclical data exchange.
Configuring Hardware and Communication Connections with STEP 7
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