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Rockwell Automation Publication 842E-UM001B-EN-P—April 2015
Chapter 3
EtherNet/IP overview
the precise measurement of the distance between two filling stations, 1000 steps
are required.
The number of revolutions is pre-defined by the transmission ratio = 12.5 of the
rotary table gearing. The total resolution is then 9 × 1,000 = 9,000 steps, to be
realized in 12.5 revolutions of the encoder. This ratio cannot be realized via the
steps per revolution and the total resolution, as the total resolution is not 2H
times the steps per revolution. The application problem can be solved using the
round axis functionality. The steps per revolution are ignored here. The total
resolution as well as the nominator and divisor for the number of revolutions are
configured. 9,000 steps are configured as the total resolution. For the nominator
for the number of revolutions 125 is configured, 10 as the divisor (125/10 =
12.5). After 12.5 revolutions (that is after one complete revolution of the rotary
table) the encoder reaches the total resolution of 9,000.
Test:
In this example, we will be issuing
incremental MAM motion commands to the
K6500 CIP axis, & compare accuracy against 842E-M position tag.
Verify the measuring range (unwind) position rolls-over correctly when approach
from both CW and CCW directions.
See the tables attached for specific test intervals based on the numerator,
denominator, and measurement ranges selected.
Summary of Contents for Rockwell Automation 842E-MIP Series
Page 1: ...842E EtherNet IP Absolute Encoder 842E SIP xxx 842E MIP xxx User Manual ...
Page 6: ...iv Rockwell Automation Publication 842E UM001B EN P April 2015 About this document Notes ...
Page 34: ...28 Rockwell Automation Publication 842E UM001B EN P April 2015 Chapter 4 Installation Notes ...
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