Siemens SINAMICS G120D List Manual page 688

Encoders Control Unit
Enc_config eff
- ... -
Enc_typ sel
p0404 [D]
0 ... 9999
p0400 [D] (0)
CU detection LED
0 ... 1
p0124 [D] (0)
<7>
SM properties
r0458
Encoder
n
<1> For rotary encoders = pulse number setting.
<2> Assignment of the indices: Index [n-1] --> Encoder n
Index [0] --> Encoder 1
Index [1] --> Encoder 2
<3> For SIMODRIVE-compatible functions: Set p0418 = 11.
<4> Generating the two's complement.
<5> Gn_XIST1 is a free-running position value.
The external control must process the overflows.
<6> The contents of r0483/r2723 are determined by the encoder
status word/control word. Refer to [4720] and [4730].
1 2
Encoder evaluation
Position sensing, encoders 1 … 2
<1>
Enc grid div
0 ... 250000000 [nm]
Sq-wave enc A/B Rot enc pulse No.
p0407 [D]
- ... - 0 ... 16777215
p0405 [D] p0408 [D]
Enc fine Gx_XIST1
2 ... 18
1 2 1
p0418 [D] (2)
A
inkr
<3> 2
B
n
x2
Raw position
2
signals
Multiplication
by hardware
1 signal period
Enc fine Gx_XIST2
2 ... 18
p0419 [D] (2) -1048576 ... 1048576
Cyclic absolute
position value
n
x2
(only for absolute value
encoders, e.g. SSI)
Bits
Geb Gn_STW
Encoder control word
[4720.4] r0487[n-1]
<2> Measuring probe position
<7> Interface SSI.
3 4
Configuration, absolute value encoder
Enc abs multiturn Enc abs meas step
0 ... 65535 0 ... 4294967295 [nm]
p0421 [D] p0422 [D]
Enc inv act value
- ... -
2
p0410 [D]
n
A
u
0
p
III
dn
n
-1
1
B
32 Bit
<4>
Free-running
position
counter
Mot/load motor rev
1 ... 1048576
p2504 [D]
For SSI encoders: Absolute position information
Sequence control
Mot/load load rev
p2505 [D]
Reference mark position
[4735.7]
Absolute value
Error code
Encoder error
processing
Measuring probe position
14-15
Enc Gn_ZSW
[4730.5] r0481 [n-1]
5 6
fp_4704_97_04.vsd
12.12.2012
Enc abs singleturn Enc rot dist ZM
0 ... 1073741823 0 ... 16777215
p0423 [D] p0425 [D]
Raw position signals
(only from encoder 1)
Direction of
rotation
No. of signal
periods
0
31 n-1
n 0
-1
1
Fine resolution
Multiplication
32 by hardware
2 -1
0
&
Direction of
rotation
0
-1
1
Encoder status bits
Function selection
to Gn_ZSW
Bits 0-13
F31100...A32999
encoder faults/alarms
Encoder status word
p0979[0...25]
Encoder format acc. to
PROFIdrive
7
Function diagram
SINAMICS G120D
V4.6
To speed sensing
[4715.1]
<2> <5>
Enc Gn_XIST1
r0482 [n-1]
[4010.1]
[4710.1]
[4735.6]
[4740.6]
Diag Gn_XIST1
r0479 [n-1]
[3090.1]
[4711.1]
<2> <6>
Enc Gn_XIST2
r0483 [n-1]
[4710.1]
[4730.1]
8
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