Siemens SINAMICS DCM Manual página 792

r0487[n-1].0
STW for encoder n
Gn_STW
r0487[n-1].4
r0487[n-1]
r0487[n-1].7
[4720.4]
<2> <3>
<1> The measured-value memory is read out using a handshake procedure, in acc. with [4720], [4730].
<2> Index [n-1] Encoder n (n = 1, 2)
Index [0] Encoder 1
Index [1] Encoder 2
<3> All other bits in the encoder control word must be 0.
<4> Increasing actual position values (r0482) the 0/1 edge is evaluated.
Decreasing actual position values (r0482)
In this way, the same reference point is always used for travel to an external zero mark.
1 2
DO: DC_CTRL
Encoder evaluation - Reference mark search, encoders 1 ... 2
Activate selected functions
Selection of function to be activated
&
1
Encoder zero mark for encoder n
the 1/0 edge is evaluated.
3 4
Actual position value 1
from encoder n
[4704.8]
r0482[n-1]
<2>
D flip-flop
<4>
D Q
&
Store
5
fp_4735_13_eng.vsd
07.12.18 V01.05.00
PROFIdrive sampling time
<1>
Measured-value
memory
x
Gn_XIST2
y
for function no. = 1
Store
6 7
Function diagram
SINAMICS DCM
Reference mark
position to
encoder interface
[4704.4]
8
- 4735 -