Efficient Networks Siemens Sinamics S120 - Manual (Page 376)

Communication PROFIBUS DP/PROFINET IO
10.1 Communications according to PROFIdrive
Drive Functions
376
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
Table 10-18 Description of the individual signals in Gn_STW
Bit Name Signal status, description
If bit 7 = 0, then find reference mark request applies:
Bit
Meaning
0 Function 1 Reference mark 1
1 Function 2 Reference mark 2
2 Function 3 Reference mark 3
3 Function 4 Reference mark 4
If bit 7 = 1, then find flying measurement request applies:
0
Function 1 Probe 1 rising edge
1 Function 2 Probe 2 falling edge
2 Function 3 Probe 3 rising edge
3 Function 4 Probe 4 falling edge
Note:
•
Bit x = 1
Bit x = 0
Request function
Do not request function
0
1
2
3 Find reference
mark or flying
measurement
Functions
• 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 (STW.0/.1/.2/.3 "0" signal again).
• Find reference mark
It is possible to search for a reference marker.
• Equivalent zero mark
• On-the-fly measurement
Positive and negative edge can be activated simultaneously.
Bit 6, 5, 4 Meaning
000 -
001 Activate function x
010 Read value x
011 Terminate function
4
5
6 Command
(x: function selected via bit 0-3)
1
Measurement on-the-fly (fine resolution via p0418) 7 Mode
0 Find reference marker (fine resolution via p0418)
0...
12
Reserved -
1 Request cyclic transmission of the absolute position actual value in
Gn_XIST2.
Used for (e.g.):
•
Additional measuring system monitoring
• Synchronization during ramp-up
13 Request cyclic absolute value
0 No request
1 Request parking encoder (handshake with Gn_ZSW bit 14) 14 Parking encoder
0 No request
15 Acknowledge encoder error 0/1 Request to reset encoder errors