Examples and tips
PROGRAMMING MANUAL
289
R
e
vi
si
o
n
1
.0
The input used for registration is determined by the argument of the
REGIST
command.
fig. 33
The delay in the capture in the Sigma-II Servo Driver is about 3
µ
s. As the
encoder information is refreshed every 62.5
µ
s, it is necessary to make
interpolation to obtain the right captured position value (see the picture).
Since the motor speed cannot change much during 62.5
µ
s, the resulting
accuracy is very high.
The delays in transmission of the information are:
•
Delay in triggering the registration: 0.625 ms to 4 ms.
•
Delay in receiving the registration: 3.5 ms.
•
Delay in capturing the registration: 3
µ
s.
It is also possible to use the encoder Z-mark to register an axis position. This
is also done with the argument of the
REGIST
command.
EXT 3
Pn511.3
As for EXT 1
As for EXT 1
Registra-
tion signal
Parameter
number
Parameter value
Description
t
Position
Interpolated
position
62.5
µ
s
Latch input