Siemens SINAMICS S120 Function Manual page 678

Communication
10.1 Communication according to PROFIdrive
Encoder n control word (Gn_STW, n = 1, 2, 3)
The encoder control word controls the encoder functions.
See function diagram [4720]
Table 10- 39 Description of the individual signals in Gn_STW
Bit Name
0 Find reference
mark or flying
1
measurement
2
3
4
5
6
7
0... Reserved
12
676
Signal status, description
Functions If bit 7 = 0, then find reference mark request applies:
Bit
0
1
2
3
If bit 7 = 1, then find flying measurement request applies:
0
1
2
3
Note:
Bit x = 1
•
Bit x = 0
The following applies if more than 1 function is activated:
•
The values for all functions cannot be read until each activated function
has terminated and this has been confirmed in the corresponding status
bit (ZSW.0/.1/.2/.3 "0" signal again).
Find reference mark
•
It is possible to search for a reference mark.
Equivalent zero mark
•
Flying measurement
•
Positive and negative edges can be simultaneously selected.
Command
(x: function selected using bit 0 to 3)
Mode 1
0
-
Meaning
Function 1 Reference mark 1
Function 2 Reference mark 2
Function 3 Reference mark 3
Function 4 Reference mark 4
Function 1 Probe 1 rising edge
Function 2 Probe 1 falling edge
Function 3 Probe 2 rising edge
Function 4 Probe 2 falling edge
Request function
Do not request function
Bit 6, 5, 4 Meaning
000 No function
001 Activate selected function
010 Read generated value
011 Terminate function
Flying measurement (fine resolution via p0418)
Find reference mark (fine resolution via p0418)
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
Drive functions