Lika DRAW WIRE SFA-10000 Series, User Manual, Page: 55 / 72

SFA-5000 • SFA-10000 Profibus
EXAMPLE
Using the values in the previous example let's suppose that the travel in the
application is 2 m long. As the stroke per turn is 200 mm you need 10
revolutions to cover the travel length.
•
Total resolution
=
Counts per revolution
* custom number of
revolutions = 2,000 * 10 = 20,000; bytes 15 … 18 = 0000 4E20 hex
In fact:
Custom number of encoder revolutions =
Total resolution
= 10
Counts per revolution
In this case you will obtain several 20,000 information sections following each
other all along the whole measuring length. The position information will be
from 0 to 19,999; then again from 0 to 19,999 and so on.
... 19,997 19,998 19,999 0 1 2 ... 19,997 19,998 19,999 0 1 2 ...
max. measuring length
← →
NOTE
When new values are set next to the Counts per revolution and/or Total
resolution parameters, a new Preset value setting is required according to the
new resolution.
6.4.4 Byte 19
Velocity measure unit
This byte is available only when Class 2 (+VEL) is set (see also
Class 2
functionality
and
Exchange type
items).
It defines the unit of measurement for the speed value transmitted by the
device.
00 = step/s (steps per second);
01 = rpm (revolutions per minute).
Default = 0 (min. = 0, max. = 1)
MAN SFA_5000_10000_PB E 1.0 Profibus® interface 55 of 72