Siemens SIMATIC ET 200AL, System Manual

Page: 1609 / 2255

PROFINET with STEP 7
44
Function Manual, 05/2021, A5E03444486-AL
Parameter assignment/addressing
3
To set up an automation system, you will need to configure, assign parameters and interlink
the individual hardware components. In STEP 7, the work needed for this is undertaken in the
device, topology and network view.
Configuring
"Configuring" is understood to mean arranging, setting and networking devices and modules
within the device, topology or network view.
An I/O address is automatically assigned to each module. The I/O addresses can be
subsequently modified.
The CPU compares the configuration preset in STEP 7 with the actual current configuration of
the system. In this way, potential errors can be detected and reported straight away.
The exact procedure for configuring devices is described in detail in the STEP 7 online help.
Assigning parameters
"Assigning parameters" is understood to mean setting the properties of the components
used. The settings for the hardware components and for data communication are configured
at the same time.
In STEP 7, you can "assign parameters" for the following settings PROFINET:
•
Device names and IP address parameters
• Port interconnection and topology
• Module properties / parameters
The parameters are loaded into the CPU and transferred to the corresponding modules when
the CPU starts up. Modules are easy to replace from spare parts, as the parameters assigned
for the SIMATIC CPUs are automatically loaded into the new module at each startup.
Adjusting the hardware to the project requirements
You need to configure hardware if you want to set up, expand or change an automation
project. To do this, add hardware components to your structure, link these with existing
components, and adapt the hardware properties to the tasks.
The properties of the automation systems and modules are preset such that in many cases
they do not have to be assigned parameters again.
Parameter assignment is however needed in the following cases:
•
You want to change the default parameter settings of a module.
• You want to use special functions.
• You want to configure communication connections.