Parameterization via TRWinProg
TR-Electronic GmbH 2018, All Rights Reserved
Printed in the Federal Republic of Germany
Page 52 of 67
TR-ECE-BA-DGB-0141 v03
03/19/2021
If it is not possible to enter parameter data in the permitted ranges of numerator and
divisor, the attempt must be made to reduce these accordingly. If this is not possible, it
may only be possible to represent the decimal number affected approximately. The
resulting minor inaccuracy accumulates for real round axis applications (infinite
applications with motion in one direction).
A solution is e.g. to perform adjustment after each revolution or to adapt the
mechanics or gearbox accordingly.
The parameter
"Number of steps per revolution"
may also be decimal number,
however the
"Total number of steps"
may not. The result of the above formula must
be rounded up or down. The resulting error is distributed over the total number of
revolutions programmed and is therefore negligible.
Preferably for linear axes (forward and backward motions):
The parameter
"Revolutions divisor"
can be programmed as a fixed value
of "1". The parameter
"Revolutions numerator"
is programmed slightly higher than
the required number of revolutions. This ensures that the measuring system does not
generate a jump in the actual value (zero transition) if the distance travelled is
exceeded. To simplify matters the complete revolution range of the measuring system
can also be programmed.
The following example serves to illustrate the approach:
Given:
-
Measuring system with 4096 steps/rev. and max. 4096 revolutions
-
Resolution 1/100 mm
-
Ensure the measuring system is programmed in its full resolution and total
measuring length (4096x4096):
Total number of steps
= 16777216,
Revolutions numerator
= 4096
Revolutions divisor
= 1
-
Set the mechanics to be measured to the left stop position
-
Set measuring system to "0" using the adjustment
-
Set the mechanics to be measured to the end position
-
Measure the mechanical distance covered in mm
-
Read off the actual value of the measuring system from the controller
connected
