Siemens SIMATIC S7-1500 System Manual page 234

Glossary
Process image (I/O)
The CPU transfers the values from the input and output modules in this memory area. At the
start of the cyclic program the signal states of the input modules are transmitted to the
process image of the inputs. At the end of the cyclic program the process image of the
outputs is transmitted as signal state to the output modules.
Product version (PV) = Function version (FV)
The product version or function version provides information on the hardware version of the
module.
PROFIBUS
PROcess FIeld BUS, process and fieldbus standard that is specified in IEC 61158 Type 3. It
specifies functional, electrical and mechanical characteristics for a bit-serial field bus system.
PROFIBUS supports the protocols DP (= Distributed I/O), FMS (= Fieldbus Message
Specification), PA (= Process Automation), or TF (= Technological Functions).
PROFINET
PROcess FIeld NETwork, open industrial Ethernet standard which further develops
PROFIBUS and industrial Ethernet. A cross-manufacturer communication, automation, and
engineering model defined by PROFIBUS International e.V. as an automation standard.
PROFINET component
A PROFINET component includes the entire data of the hardware configuration, the
parameters of the modules, and the corresponding user program. The PROFINET
component consists of:
● Technological function
The (optional) technological (software) function comprises the interface to other
PROFINET components in the form of interconnectable inputs and outputs.
● Device
The device is the representation of the physical automation device or field device
including the I/O, sensors and actuators, mechanics, and device firmware.
PROFINET IO
Communication concept for the realization of modular, distributed applications within the
scope of PROFINET.
PROFINET IO controller
Device used to address connected I/O devices (e.g. distributed I/O systems). This means
that: The IO controller exchanges input and output signals with assigned I/O devices. The IO
controller often corresponds to the CPU in which the automation program is running.
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Automation system
System Manual, 12/2014, A5E03461182-AC