SFA-5000 • SFA-10000 EtherCAT
NOTE
Please note that if you set a preset along the path, when the encoder moves
back and cross the zero, the value immediately after 0 will be 32 768 000 - 1, i.e.
32 767 999.
...
32,767,997 32,767,998 32,767,999
0
1
2
...
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.
•
custom number of revolutions = 2,000 * 10 = 20,000
In fact:
Custom number of encoder revolutions =
=
10
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
To avoid counting errors we recommend values which are power of 2 (2
n
: 2, 4,
…, 2048, 4096, 8192,…) to be set next to the
objects.
WARNING
If you have set the preset, when you change the value next to
preset operation.
MAN SFA_5000_10000_EC E 1.0.odt
6 - EtherCAT® interface
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