Glossary - Siemens SITRANS FC410 Operating Instructions Manual

Glossary

Coriolis
The Coriolis effect is an apparent deflection of moving objects from a straight path when they
are viewed from a rotating frame of reference. The effect is named after Gaspard-Gustave
Coriolis, a French scientist who described it in 1835. The Coriolis effect is caused by the
Coriolis force, which appears in the equation of motion of an object in a rotating frame of
reference.
CRC Cyclic Redundancy Check
Cyclic Redundancy Check is used for error checking in Modbus RTU.
EHDG
European Hygienic Engineering & Design Group was founded in 1989 to promote hygienic
engineering in the European food industry. EHEDG provides practical guidance on hygienic
engineering aspects of manufacturing safe and whole some foods.
EMC
Electromagnetic compatibility (EMC) is the branch of electrical sciences which studies the
unintentional generation, propagation and reception of electromagnetic energy with
reference to the unwanted effects (Electromagnetic Interference, or EMI) that such energy
may induce. The goal of EMC is the correct operation, in the same electromagnetic
environment, of different equipment which use electromagnetic phenomena, and the
avoidance of any interference effects.
IP
An IP (Ingress Protection) number is used to specify the environmental protection of
enclosures around electronic equipment. These ratings are determined by specific tests. The
IP number is composed of two numbers, the first referring to the protection against solid
objects and the second against liquids. The higher the number, the better the protection. For
example, in IP67 the first Number (6) means that the device is totally protected against dust,
and the second (7) that it is protected against the effect of immersion between 15cm and 1m
Modbus
Modbus is a serial communications protocol intended for use with programmable logic
controllers (PLCs). Modbus allows for communication between many devices connected to
the same network, for example a system that measures temperature and humidity and
communicates the results to a computer. Modbus is often used to connect a supervisory
computer with a remote terminal unit (RTU) in supervisory control and data acquisition
systems.
FC410 with Modbus
Operating Instructions, 02/2016, A5E33120874-AC
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