Glossary - Siemens Simatic CFU Commissioning Manual

Glossary

Actuator
Actuators can be power relays or contactors for switching on loads, or they can be loads
themselves (e.g., directly controlled solenoid valves).
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.
Availability
Availability is the probability that a system is functional at a specific point in time. Availability
can be increased by redundancy, e.g., by using multiple -> sensors at the
same measuring point.
Bus
Joint transmission path to which all participants of a fieldbus system are connected; has two
defined ends.
BusAdapter
Enables free selection of the connection technology for the PROFINET fieldbus.
Channel number
Channel numbers are used to uniquely identify the inputs and outputs of a module (device -
CFU) and to assign channel-specific diagnostic messages.
Configuration
Systematic arrangement of the individual modules.
Configuration control
Function that enables flexible adaptation of the actual configuration based on a defined
maximum configuration via the user program. Input, output and diagnostics addresses remain
unchanged.
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