Glossary - Siemens SIMATIC Distributed I/O ET 200eco PN Operating Instructions Manual

Glossary

Automation system
Programmable logic controller for the open-loop and closed-loop control of process
sequences of the process engineering industry and manufacturing technology. The
automation system consists of different components and integrated system functions
depending on the automation task.
Autonegotiation
Configuration protocol in the Fast Ethernet. Before the actual data transmission, the devices
on the network agree a transfer mode that each participating device can master (100 Mbps or
10 Mbps, full-duplex or half-duplex).
Baud rate
The speed at which data is transferred, which indicates the number of bits per second (baud
rate = bit rate).
Bus
Data transfer bus to which all nodes are connected. It has two defined ends.
Bus connector
Physical connection between the bus node and the bus cable.
Chassis ground
Chassis ground includes all the interconnected inactive parts of equipment that must not
carry a hazardous voltage even in the event of a fault.
Configuration
Systematic arrangement of the individual modules.
Configuration control
Function that enables a flexible adjustment of the actual configuration based on a configured
maximum configuration via the user program. Input, output and diagnostics addresses
remain unchanged.
CPU
The CPU supplies the electronics of the used modules via the backplane bus by means of the
integrated system power supply. The CPU contains the operating system and executes the
user program. The user program can be found on the SIMATIC Memory Card and is edited in
the work memory of the CPU. The PROFINET interfaces available at the CPU establishes a
connection to the Industrial Ethernet. The CPUs of the ET 200SP support the operation as an
IO controller, I device and as a standalone CPU.
ET 200eco PN
Operating Instructions, 06/2022, A5E01250250-AN
267