Siemens SIMATIC ET 200M Operating Instructions Manual page 261

PROFINET components
A PROFINET component encompasses the entire data of the hardware configuration, the
parameters of the modules, and the corresponding user program. The PROFINET component
is comprised of:
• Technological function
The (optional) technological (software) function includes the interface to other PROFINET
components in the form of configurable inputs and outputs.
• Device
The device is the representation of the physical automation device or field device
including the IO devices, sensors, actuators, mechanics, and device firmware.
PROFINET IO
Within the framework of PROFINET, PROFINET IO represents a communication concept for the
implementation of modular, distributed applications.
PROFINET IO allows you to create automation solutions, which are familiar to you from
PROFIBUS.
PROFINET IO is implemented by the PROFINET standard for automation devices on the one
hand, and on the other hand by the engineering tool STEP 7. In other words, you have the
same application view in STEP 7, regardless of whether you configure PROFINET or PROFIBUS
devices. Programming your user program is essentially the same for PROFINET IO and
PROFIBUS DP if you use the extended blocks and system status lists for PROFINET IO.
PROFINET IO Controller
Device used to address connected IO devices. That means: the IO controller exchanges input
and output signals with assigned field devices. The IO controller is usually the controller
running the automation program.
PROFINET IO Device
Distributed field device which is assigned to one of the IO controllers (remote IO, valve
blocks, frequency converters, switches.)
Programmable logic controller
Programmable logic controllers are electronic control systems that are stored as programs in
the control device. Thus, neither setup nor wiring of the device depend on the control
system's function. The programmable logic controller is structured like a computer: it consists
of a CPU with memory, I/O modules and an internal bus system. IO devices and programming
language are aimed at control technique requirements.
ET 200M
Operating Instructions, 04/2022, EWA-4NEB7806006-09
Glossary
261