Direct Setpoint Input (Mdi) - Siemens Sinamics S110 Function Manual

● r2683 CO/BO: EPOS status word 1
● r2686 CO: EPOS Torque limit effective
7.3.6.6

Direct setpoint input (MDI)

Features
● Select direct setpoint input (p2647)
● Select positioning type (p2648)
● Direction selection (p2651, p2652)
● Setting-up (p2653)
● Fixed setpoints
● Connector inputs
● Accept (p2649, p2650)
Description
The direct setpoint input function allows for positioning (absolute, relative) and setup
(endless position-controlled) by means of direct setpoint input (e.g. via the PLC using
process data).
During traversing, the motion parameters can also be influenced (on-the-fly setpoint
acceptance) and an on-the-fly change can be undertaken between the Setup and Positioning
modes. The "direct setpoint input" mode (MDI) can also be used if the axis is not referenced
in the "setup" or "relative positioning" modes, which means that "flying referencing" (see the
separate section), flying synchronization, and post-referencing are possible.
The direct setpoint input function is activated by p2647 = 1. A distinction is made between
two modes: positioning mode (p2653 = 0) and setup mode (p2653 = 1).
In "positioning" mode, the parameters (position, velocity, acceleration and deceleration) can
be used to carry out absolute (p2648 = 1) or relative (p2648 = 0) positioning with the
parameter p2690 (fixed setpoint position).
In the setting-up mode, using parameters (velocity, acceleration and deceleration) "endless"
closed-loop position control behavior can be carried out.
Drive functions
Function Manual, 10/2008, 6SL3097-4AB10-0BP0
– CO: Position setpoint (p2690)
– CO: Velocity setpoint (p2691)
– CO: Acceleration override (p2692)
– CO: Deceleration override (p2693)
– CI: MDI position setpoint (p2642)
– CI: MDI velocity setpoint (p2643)
– CI: MDI acceleration override (p2644)
– CI: MDI deceleration override (p2645)
– CI: Velocity override (p2646)
Drive functions
7.3 Function modules
247