Parameterization and configuration
TR-Electronic GmbH 2008, All Rights Reserved
Printed in the Federal Republic of Germany
Page 94 of 109
TR - ECE - BA - DGB - 0068 - 01
06/19/2012
7.8.8 Scaling parameter TR-Mode "Position"
With the scaling parameter the physical resolution of the measuring system can be
changed. The position value output is decoded according to the adjusted code and is
calculated with a zero point correction and the count direction set. The measuring
system does not support decimal numbers in this configuration or numbers of
revolutions (gearbox function) deviating from exponents of 2.
7.8.8.1 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
16777216 steps (24 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.
When entering parameter data, ensure that the parameter
"Number of revolutions
numerator"
is an exponent of 2.
If this is not the case, the measuring system corrects the measurement length in steps
to the next smallest integer, so that results the next smallest exponent of 2 of the
number of revolutions. The Steps per revolution remains constant.
The newly calculated total measuring range can be read from the extended diagnosis
information for CLASS 2 and is always shorter than the specified measurement
length. It may therefore occur that the total number of steps actually required is not
achieved and the measuring system generates a zero transition before it reaches the
maximum mechanical distance.
7.8.8.2 Number of revolutions numerator
Defines the
number of revolutions
of the measuring system before the measuring
system restarts at zero.
lower limit
1
upper limit
4096
default
4096
