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© Siemens AG
2012 All Rights Reserved
SINAMICS
S110
List Manual (LH7
), 06/201
2, 6SL3097-
4AP
1
0-0BP3
Fi
g.
2
-1
24
473
5 – Reference
mark search
with
external
ze
ro
mark, e
ncod
er 1
- 4735 -
Function diagram
8
7
6
5
4
3
2
1
fp_4735_98_eng.vsd
DO: SERVO
SINAMICS S110
17.07.09 V04.04.00
Encoder evaluation - Reference mark search with equivalent zero mark, encoder 1
Reference mark search
STW
Gn_STW [4720]
r0487[n-1].0
Gn_XIST2
for function No. = 1
x
y
Store
<1>
<2>
Measured-value memory
The measured value memory is read out using a handshaking technique according to [4720], [4730].
<1>
Index [n-1] --> encoder n (n = 1, 2, 3)
Index [0] --> encoder 1
Index [1] --> encoder 2
&
r0487[n-1].4
r0487[n-1].7
Q
D
D memory
element
Activate selected function
Reference mark
position to the
encoder interface
[4704.4]
<3>
<3> All other bits in the encoder control word must be 0.
r0483[n-1]
Position actual value 1
[4704.8]
1
&
<4>
Increasing position actual values (r0482) --> The 0/1 edge is evaluated.
Decreasing position actual values (r0482) --> The 1/0 edge is evaluated.
This means that the same reference point is always used when traversing to an equivalent zero mark.
<4>
Store
Select the function to be activated
Refer to [1020.7]
PROFIdrive sampling time
NOTE: SINAMICS S110 supports only one encoder. This encoder may be parameterized
as encoder 1 or encoder 2.
Zero mark input
0...7
p0495[n-1] (0)
No equivalent zero mark
(evaluate the encoder zero mark for encoder n)
0
1
2
3
4
5
6
"Fast inputs"
From the
digital
inputs/
outputs
p0490.10
p0490.9
DI10_probe
(X132.3)
[2031.4]
DI9_probe
(X132.2)
[2030.4]
1
0
1
1
0
1
p0490.11
DI11_probe
(X132.4)
[2031.4]
1
0
1
p0490.8
DI8_probe
(X132.1)
[2030.4]
1
0
1
7