NORDAC SK 530E with PosiCon funktion
48
Subject to technical changes
BU 0510 EN
9
Key word index / Abbreviations
Key word index:
Absolute encoder, single turn
Encoder which outputs unique, coded information for each measuring
step within one revolution. The data information is retained even if power
fails. Data continues to be recorded when no current is applied.
Absolute encoder, multiturn
Encoder like the absolute encoder, single turn, however the number of
revolutions is also recorded.
Resolution
In single turn encoders, the resolution indicates the number of measuring
steps per revolution.
In multiturn encoders, the resolution indicates the number of measuring
steps per revolution multiplied by the number of revolutions.
Baud rate
Transmission rate through serial interfaces in bits per second.
Binary code
Designation of a code that transmits messages using "0" and "1" signals.
Bit / Byte
A bit (binary digit) is the smallest information unit in a binary system, one
byte has 8 bits.
Broadcast
In a network, all slave participants are simultaneously communicated
with by the master.
CAN bus
(Controller Area Network) designation for a multi master bus system with
two-wire cabling. It works based on events or messages. Currently,
standardised CAN protocols are specified under CANopen.
CANopen
Designates a communication protocol based on CAN.
Encoder
Electric or opto-mechanical device for recording rotary movements.
There are absolute encoders and incremental encoders.
Accuracy
Deviation between actual and measured position.
Total resolution
In single turn encoders, the resolution indicates the number of measuring
steps per revolution.
In multiturn encoders, the resolution indicates the number of measuring
steps per revolution multiplied by the number of revolutions.
Incremental
encoder
Encoder that outputs an electrical impulse (High/Low) for each
measuring step.
Jitter
A slight fluctuation in accuracy during transmission cycles or the variance
in data packet running times.
Multiturn encoder
See "Absolute encoder, multiturn"
Reset position
Function for setting a zero point (or offset) at any position in the
resolution range of an encoder, without any mechanical adjustment.
Single turn encoder
See "Absolute encoder, single turn"
Pulse number
A number of light/dark segments is applied to a glass pulse disc. These
segments are sensed by a light beam in the encoder and thereby
determine the possible resolution of an encoder.
