TR-Electronic CK-58 - Total Measuring Range

Parameterization and configuration
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Page 94 of 112 TR - ECE - BA - DGB - 0036 - 16 11/05/2018
7.11.7.2 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 PNO CLASS 2 16 bit
65 536 steps
Upper limit PNO CLASS 2 32 bit
33 554 432 steps (25 bit)
Default
16 777 216
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/rev. and the number of revolutions can be read
on the measuring system nameplate.
When entering parameter data, ensure that the parameters
"Total measuring
range" and "Steps per revolution"
are selected such that the quotient of the two
parameters is an exponent of 2.
If this is not the case, the measuring system
corrects the measurement length in
steps to the next smallest exponent of 2 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 s
horter 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.
As the internal
absolute position (before scaling and zero point adjustment) is
periodically repeated after 4096 revolutions -
for applications where the number of
revolutions is not an exponent of 2 and rotation is infinitely in the same direction,
there is always an offset.
For such applications, one of the TR configurations "TR-Mode…" are always to be
used.