Siemens SINAMICS S120 Function Manual page 277

Note
Continuous acceptance p2649 = 1 can only be set with free telegram configuration
p0922 = 999. No relative positioning is allowed with continuous acceptance.
The direction of positioning can be specified using p2651 (positive direction specification)
and p2652 (negative direction specification). If both inputs have the same status, the
shortest distance is traveled during absolute positioning (p2648 = "1") of modulo axes
(p2577 = "1").
To use the positioning function, the drive must be in operating mode (r0002 = 0). The
following options are available for starting positioning:
● p2649 is "1" and positive edge on p2647
● p2649 is "0" and p2647 is "1"
Figure 7-19
MDI mode with the use of PROFIdrive telegram 110.
If the connector input p2654 is preset with a connector input <> 0 (e.g. with PROFIdrive
telegram 110 with r2059[11]), then it will internally manage the control signals "Select
positioning type", "Positive direction selection" and "Negative direction selection". The
following characteristics are evaluated from the value of the connector input:
● xx0x = absolute -> p2648
● xx1x = relative -> p2648
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
– positive edge on p2650 or
– positive edge on p2649
Setpoint transfer
Function modules
7.9 Basic positioner
277