LENZE E82EV752K2C200 E82EV752K2C200 E82EV752K2C200 E82EV752K2C200 E82EV752K2C200

TP
The Network Time Protocol (NTP) is a standard for synchronizing clocks in automation
systems via Industrial Ethernet. NTP uses the UDP connectionless network protocol.
Operating states
Operating states describe the behavior of a single CPU at any given time.
The primary CPU of the R/H redundant system has the operating states STOP,
STARTUP, RUN, RUN-Syncup and RUN-Redundant. The backup CPU has the operating
states STOP, SYNCUP and RUN-Redundant.Organization blocks (OBs) form the interface between the operating system of the CPU and
the user program. The organization blocks determine the order in which the user program is
executed.
Pairing
Pairing is the mutual recognition of the CPUs of an R/H system within a network.
During pairing, the CPUs exchange information for mutual identification. Example: Checking
for matching article number and firmware version. Successful pairing of two CPUs is a
fundamental requirement for redundant operation.Tag of a STEP 7 code block:
● Tag for setting the behavior of a module (one or more per module). In as-delivered state,
every module has an appropriate basic setting, which you can change by configuring in
STEP 7. There are static and dynamic parameters
Parameters, dynamic
You can change dynamic module parameters during operation by calling an SFC in the user
program, for example, limits of an analog input module.
Parameters, static
You cannot change static module parameters with the user program, but only with
configuration in STEP 7, for example, the input delay of a digital input module.
PELV
Protective Extra Low Voltage = safety extra low voltage connected to protective earth
Pre-wiring
Wiring of the front connector in the "pre-wiring position" at the I/O module or before you
insert the front connector into the I/O module.
Primary CPU
Role of a CPU in the R/H redundant system. If the R/H system is in the RUNRedundant
system state, the primary CPU controls the process. The backup CPU processes
the user program synchronously and can take over process control if the primary CPU failsThe primary CPU has the leading role within the redundant system. If the primary CPU fails
following a fault, the backup CPU takes over the primary role and operates as the primary
CPU.
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 CPU transfers the process image output as a signal state to
the output modules. The CPU then reads the signal states of the input modules into the
process image inputs. The CPU then executes the user program.

Product version (PV) = Function version (FV)
The product version or function version provides information on the hardware version of the
module.
PROFINET
PROcess FIeld NETwork, open Industrial Ethernet standard that continues PROFIBUS and
Industrial Ethernet. A cross-manufacturer communication, automation, and engineering
model defined by PROFIBUS International e.V. as an automation standard.Communication concept for the realization of modular, distributed applications within the
scope of PROFINET.
PROFINET IO controller
Device used to address connected IO devices (for example distributed I/O systems). The IO
controller exchanges input and output signals with assigned IO devices. The IO controller is
often the CPU on which the user program is running.
PROFINET IO device
Distributed field device that can be assigned to one or more IO controllers. Examples:
Distributed I/O system, valve terminals, frequency converters, switches
Push-in terminal
Terminal for the tool-free connection of wires.The redundancy connection in an R system is the PROFINET ring with MRP. The
redundancy connection uses part of the bandwidth on the PROFINET cable for the
synchronization of the CPUs. This bandwidth is therefore not available for PROFINET IO
communication.
Unlike in R, the PROFINET ring and redundancy connections in H are
separate. The two redundancy connections are fiber-optic cables that connect the CPUs
directly over synchronization modules. The bandwidth on the PROFINET cable is available
for PROFINET IO communication.
Redundancy ID
The load memory of both CPUs contains the project data of one as well as the other CPU.
By assigning the redundancy IDs, you define which project data a CPU uses for itself.
Redundant systems
Redundant systems have multle (redundant) instances of key automation components.