Glossary - gefran GF VEDO SL Series Installation And User Manual

Glossary

CAN Controller Area Network, also known as
CAN-bus, is a standardised bus that
enables the devices to communicate
with each other.
CANopen
CAN communication protocol.
Protocol specification for devices used in
automation systems.
Work cycle
Fraction of time that represents the active
state of a device, circuit, etc. in relation to
the total time considered.
Data logger Enables the storage of information for fi-
ling records or further processing.
Duration of
Time required for the output value to reach
settlement
and remain above 90 % of the final value.
Encoder Rotative position transducer.
Electric
Sensor that transforms small dimensional
resistance deformations of a body subject to me-
extensometer chanical or thermal stress in changes of
electric.
Ethernet
Standard for local networks (LAN).
FLASH
Non-volatile memory in the solid state.
FRAM
Non-volatile RAM faster than the Flash
memory.
FTP
File Transfer Protocol.
Allows the upload and download of data
files between the controller and other
digital devices.
LSB Least Significant Bit.
It defines the minimum resolution of a me-
asurement.
LSS
Layer Setting Services.
Modbus
Open serial communication protocol, de
facto standard in communication betwe-
en industrial electronic devices.
Modbus RTU is the most common imple-
mentation of this standard, Modbus TCP/
IP is that specific m for Ethernet networks.
Opto isolated Circuit configuration which, through an
electronic component called an opto-iso-
lator, allows the transferral of a signal
between two circuits while maintaining
galvanic separation.
PID Regulation algorithm.
PLC
Programmable Logic Controller.
A digital computer specialised in the ma-
nagement of industrial processes.
PWM
Pulse-Width Modulation.
Technique for controlling power towards
electric devices.
RAM Random Access Memory
Electronic memorising device which ena-
bles the reading and writing of data.
80991C_MHW_GF_VEDO SL_09-2017_ENG
RS-232 Standard which defines a low-speed se-
rial transmission interface for the exchan-
ge of data between digital
devices, such as modems.
RS-485
Standard, at physical level, for serial con-
nection with 2 wires.
SD Card
Card for memorising large amounts of di-
gital data.
SDRAM
Synchronised access RAM.
Strain gauge
See Electric resistance extensometer.
USB Universal Serial Bus, serial communica-
tion and feeding standard created to con-
nect peripherals to computers.
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