Siemens SIMOCODE pro Manual page 111

PROFIBUS
Process Fieldbus, a European process and fieldbus standard defined in the PROFIBUS
standard (EN 50 170, Volume 2, PROFIBUS). It specifies the functional, electrical and
mechanical characteristics of a bit-serial fieldbus system.
PROFIBUS is a bus system that networks PROFIBUS-compatible automation systems and
field devices at the cell and field level. PROFIBUS is available with the DP (= Distributed
Peripherals), FMS (= Fieldbus Message Specification), PA (= Process Automation), or TF
(= Technological Functions) protocol.
PROFINET
Standard for industrial Ethernet in automation systems.
PROFIsafe
The PROFIBUS safety profile specifies communication between fail-safe I/O devices and
fail-safe controllers. It is based on the standards for safety-related applications as well as on
the experience of PLC users and manufacturers who are members of PROFIBUS
International (PI). The PROFIBUS safety profile has TÜV and BIA (Institute for Occupational
Safety and Health of the German Social Accident Insurance) certification.
Programmable controller (PLC)
Electronic module used for open-loop and closed-loop control tasks in an automation
system. It is basically a control unit with specialized input and output interfaces for sensors
and actuators. A PLC can consequently control, monitor, and influence processes.
Programming device (PG)
A compact and transportable PC, suitable for industrial purposes. Its distinguishing feature is
the special hardware and software for SIMATIC programmable controllers.
Residual current operated circuit breaker (RCCB)
Protective device in a power supply system. It disconnects the connected and monitored
circuit from the remainder of the power supply system if current is flowing in the wrong
direction, for instance through a person's body.
Safety Extra Low Voltage (SELV)
Low electric voltage (formerly "protective extra low voltage") up to 50 V AC or 120 V DC, that
offers significant protection against electric shock due to its low value and insulation.
Devices that are operated with SELV and do not generate high voltages are categorized as
Class III according to DIN EN 61140 (VDE 0140-1).
SIMOCODE pro - Fail-Safe Digital Modules
Manual, 11/2017, NEB631679702000/RS-AA/002
Glossary
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