Siemens SIMATIC ET 200SP HA System Manual page 138

Glossary
Parameter assignment
Parameter assignment is the transfer of parameters from the IO controller/DP master to the IO
device/DP slave.
PELV
Protective Extra Low Voltage
Performance Level
Performance Level (PL) to ISO 13849-1:2006 or EN / ISO 13849-1:2008
Potential group
Group of I/O modules that are jointly supplied with voltage.
Power supply
Supply of modules such as interface modules, power supply modules, I/O modules, and (if
applicable) sensors and actuators.
Safety Extra Low Voltage
Power supply
Supply of modules such as interface modules, power supply modules, I/O modules, and (if
applicable) sensors and actuators.
Safety Extra Low Voltage
Prewiring
Wiring the electrics on a rail before the I/O modules are connected.
Process image (I/O)
The CPU transfers the values from the input and output modules to this memory area. At the
start of the cyclic program, the signal states of the input modules are transmitted to the process
image input. At the end of the cyclic program, the process image output is transmitted as signal
state to the output modules.
Product version (ES) = Functional status (FS)
The product version or functional status provides information on the hardware version of the
module.
138
Modules for devices in a hazardous area
System Manual, 04/2021, A5E50165138-AA