Siemens SINAMICS G120 List Manual page 884

Encoder status bits from the
position sensing, encoder n
[4704.8]
Bit
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
From the measuring probe
evaluation
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
Bit 15
1 2
Encoder evaluation
Encoder interface, send signals, encoders 1 ... 2
PROFIdrive-Bit
Status word from encoder n (n = 1 or 2)
Feedback signal of the active function (1 = function active)
Function
For reference number and flying measurement
no.
1 reference mark 1 or measuring probe 1
2 reference mark 2 or measuring probe 1
3 reference mark 3 or measuring probe 2
4 reference mark 4 or measuring probe 2
1 = Position actual value from function 1
Generated
1 = Position actual value from function 2
value
in Gn_XIST2
(and can be
1 = Position actual value from function 3
read)
1 = Position actual value from function 4
1 = Measuring probe 1 deflected (high signal)
1 = Measuring probe 2 deflected (high signal)
Reserved
1 = Acknowledge encoder fault active
Reserved (for reference point offset)
Absolute value is cyclically transferred
Parking encoder active (i.e. the encoder is not operational)
Encoder fault, the fault is in Gn_XIST2 (r0483)
3 4
Geb Gn_ZSW
to the sequence control for Gn_XIST2
r0481[n-1]
[4704.5]
Index [n-1] --> encoder n
Index [0] --> encoder 1
Index [1] --> encoder 2
Position value 2 from encoder n
The contents of position actual value 2 (Gn_XIST2) at [4704] depends on Gn_STW and Gn_ZSW.
This can be done as follows:
- Undefined for a parking encoder (Gn_ZSW.14 = 1).
- For Gn_ZSW.15 = 1 the fault code for encoder faults is located here.
- Position actual value at the reference mark (for Gn_STW.7 = 0 and Gn_ZSW.4-7 > 0; with handshake).
- Position actual value due to flying measurement (for Gn_STW.7 = 1 and Gn_ZSW.4.7 > 0; with handshake).
- Cyclic absolute position value (free-running value, e.g. from the SSI absolute track (for Gn_ZSW.13 = 1).
5 6
fp_4730_97_55.vsd
05.09.2017 V4.7.9
7 8
Function diagram
- 4730 -
G120 CU250S-2