Parameterization and configuration
TR-Electronic GmbH 2011, All Rights Reserved
Printed in the Federal Republic of Germany
Page 116 of 131
TR - ECE - BA - DGB - 0089 - 04
02/03/2016
7.9.8 Scaling parameter TR-Modes "Position" + "Velocity"
Danger of personal injury and damage to property exists if the measuring
system is restarted after positioning in the de-energized state by shifting
of the zero point!
If the number of revolutions is not an exponent of 2 or is >4096, it can occur, if
more than 512 revolutions are made in the de-energized state, that the zero
point of the multi-turn measuring system is lost!
Ensure that the quotient of
Revolutions Numerator / Revolutions
Denominator
for a multi-turn measuring system is an exponent of 2
of the group 2
0
, 2
1
, 2
2
…2
12
(1, 2, 4…4096).
or
Ensure that every positioning in the de-energized state for a multi-turn
measuring system is within 512 revolutions.
The scaling parameters can be used to change the physical resolution of the
measuring system. The measuring system supports the gearbox function for round
axes.
This means that the
Steps per revolution
2
and the quotient of
Revolutions
numerator / Revolutions
denominator
can be a decimal number.
The position value output is calculated with a zero point correction, the count direction
set and the gearbox parameter entered.
7.9.8.1 Total measuring range
Defines the
total number of steps
of the measuring system before the measuring
system restarts at zero.
lower limit
16 steps
upper limit
33554432 steps (25 bit)
default
16777216
The actual upper limit for the measurement length to be entered in steps is dependent
on the measuring system version and can be calculated with the formula below. As
the value "0" is already counted as a step, the end value = measurement length in
steps - 1.
Total measuring range = Steps per revolution * Number of revolutions
To calculate, the parameters
Steps per revolution
and the
Number of revolutions
can be read on the measuring system nameplate.
2
results indirectly by the parameters
Total measuring range
and
Revolutions numerator/denominator
