Siemens SINAMICS G120D List Manual page 692

"Fast inputs"
Pr or ZM_equiv inv
p0490.9
0
DI1_probe
From the
1
(X7.2)
digital
1
inputs/
outputs
DI3_probe
(X8.2)
1 2
Encoder evaluation
Reference mark search with equivalent zero mark, encoder 1
Activate selected function
Geb Gn_STW
Selecting the function to be activated
r0487[n-1].0
Geb Gn_STW
r0487[n-1].4
&
Geb Gn_STW
1
r0487[n-1].7
<2>
ZM_equiv input
0 ... 23
p0494 [D] (0)
0
No equivalent zero mark (p0494 =
0)
(evaluate the encoder zero mark for
encoder n)
21
Pr or ZM_equiv inv
p0490.10
0
23
1
1
3 4
Position actual value 1 from encoder n
[4704.8]
Enc Gn_XIST1
Store
r0482 [n-1]
D
D memory
element (flip-flop) Q
<1>
Measured value memory
<3>
x
&
Store
<1> The measured value memory is read out using a handshaking technique according to [4720], [4730].
<2> All other bits in the encoder control word must be 0.
<3> 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.
5 6
fp_4735_97_55.vsd
12.12.2012 V4.6
Reference mark
position to the
Gn_XIST2
y
encoder interface
for function no. = 1
[4704.4]
7 8
Function diagram
- 4735 -
SINAMICS G120D