LENZE E82EV402K2C200 E82EV402K2C200 E82EV402K2C200 E82EV402K2C200 E82EV402K2C200

Once the cycle control point has been reached, the CPU writes the process image output to
the output modules, reads the state of the inputs to the input modules and then executes the
first cyclic OB.
In redundant mode, the cycle control point is reached as soon as the backup CPU reports
the end of the cycle to the primary CPU.The cycle time is the time a CPU requires to execute the cyclic user program once.
Cyclic interrupt
You will find further information in the glossary entry "Interrupt, cyclic".
Data block
Data blocks (DBs) are data areas in the user program that contain user data. Available data
blocks:
● Global data blocks that you can access from all code blocks.
● Instance data blocks that are assigned to a specific FB call.
Device
A device can send, receive or amplify data via the bus, e.g. IO device via PROFINET IO.
Device names
Each IO device must have a unique device name. This is required to allow the IO controller
to communicate with an IO device. Advantage: Device names are easier to manage than
complex IP addresses.
In its delivery state, an IO device has no device name. A device name must be assigned
using the PG/PC before an IO device can be addressed by an IO controller. Example: For
the transmission of configuration data (including the IP address) during startup or for the
exchange of user data in cyclic mode.
Diagnostics
Monitoring functions include:
● Detection, localization and classification of errors, faults and alarms.
● Display and further evaluation of errors, faults and alarms.
They run automatically while the system is in operation. This increases the availability of
systems by reducing commissioning times and downtimes.
The diagnostics buffer is a battery-backed memory area in the CPU where diagnostics
events are stored in their order of occurrence.
Diagnostics interrupt
You will find further information in the glossary entry "Interrupt, diagnostics".System with I/O modules that are configured on a distributed basis, at a large distance from
the CPU controlling them.
DP
Distributed I/O
Equipotential bonding
Electrical connection (equipotential bonding conductor) that brings the conductive parts of
electrical equipment and other conductive parts to the same or approximately the same
potential. This prevents disruptive or dangerous voltages arising between these parts.
Firmware of the CPU
In SIMATIC, a distinction is made between the firmware of the CPU and user programs.
The firmware is a software embedded in electronic devices. The firmware is permanently
connected to the hardware in functional terms. It is usually saved in a flash memory, such as
EPROM, EEPROM or ROM, and cannot be replaced by the user or only with special tools or
functions.
User program: You will find further information in the glossary entry "User program".
Firmware update
You update the module firmware with a firmware update. A firmware update is, for example,
run for new functions of a CPU or an interface module.
Function
A function (FC) is a code block with no static data. A function allows you to pass parameters
in the user program. Functions are thus suited for programming frequently recurring complex
functions, such as calculations.
Function block
A function block (FB) is a code block with static data. An FB allows you to pass parameters
in the user program. Function blocks are thus suited for programming frequently recurring
complex functions, such as closed-loop controls or operating mode selection.
Functional ground
Functional ground is a low-impedance current path between electric circuits and ground. It is
not intended as a protective measure but rather, for example, for improvement of
interference immunity.Conductive ground whose electrical potential can be set equal to zero at any point.
All interconnected, inactive parts of a piece of equipment.
GroundOnce the cycle control point has been reached, the CPU writes the process image output to
the output modules, reads the state of the inputs to the input modules and then executes the
first cyclic OB.
In redundant mode, the cycle control point is reached as soon as the backup CPU reports
the end of the cycle to the primary CPU.The cycle time is the time a CPU requires to execute the cyclic user program once.
Cyclic interrupt
You will find further information in the glossary entry "Interrupt, cyclic".
Data block
Data blocks (DBs) are data areas in the user program that contain user data. Available data
blocks:
● Global data blocks that you can access from all code blocks.
● Instance data blocks that are assigned to a specific FB call.
Device
A device can send, receive or amplify data via the bus, e.g. IO device via PROFINET IO.
Device names
Each IO device must have a unique device name. This is required to allow the IO controller
to communicate with an IO device. Advantage: Device names are easier to manage than
complex IP addresses.
In its delivery state, an IO device has no device name. A device name must be assigned
using the PG/PC before an IO device can be addressed by an IO controller. Example: For
the transmission of configuration data (including the IP address) during startup or for the
exchange of user data in cyclic mode.
Diagnostics
Monitoring functions include:
● Detection, localization and classification of errors, faults and alarms.
● Display and further evaluation of errors, faults and alarms.
They run automatically while the system is in operation. This increases the availability of
systems by reducing commissioning times and downtimes.
The diagnostics buffer is a battery-backed memory area in the CPU where diagnostics
events are stored in their order of occurrence.
Diagnostics interrupt
You will find further information in the glossary entry "Interrupt, diagnostics".System with I/O modules that are configured on a distributed basis, at a large distance from
the CPU controlling them.
DP
Distributed I/O
Equipotential bonding
Electrical connection (equipotential bonding conductor) that brings the conductive parts of
electrical equipment and other conductive parts to the same or approximately the same
potential. This prevents disruptive or dangerous voltages arising between these parts.
Firmware of the CPU
In SIMATIC, a distinction is made between the firmware of the CPU and user programs.
The firmware is a software embedded in electronic devices. The firmware is permanently
connected to the hardware in functional terms. It is usually saved in a flash memory, such as
EPROM, EEPROM or ROM, and cannot be replaced by the user or only with special tools or
functions.
User program: You will find further information in the glossary entry "User program".
Firmware update
You update the module firmware with a firmware update. A firmware update is, for example,
run for new functions of a CPU or an interface module.
Function
A function (FC) is a code block with no static data. A function allows you to pass parameters
in the user program. Functions are thus suited for programming frequently recurring complex
functions, such as calculations.
Function block
A function block (FB) is a code block with static data. An FB allows you to pass parameters
in the user program. Function blocks are thus suited for programming frequently recurring
complex functions, such as closed-loop controls or operating mode selection.
Functional ground
Functional ground is a low-impedance current path between electric circuits and ground. It is
not intended as a protective measure but rather, for example, for improvement of
interference immunity.Conductive ground whose electrical potential can be set equal to zero at any point.
All interconnected, inactive parts of a piece of equipment.
Ground