Siemens sinumerik 840D sl Function Manual page 573

Detailed description
2.2 Hardware configuration
Actual position value
The actual position value of the axis is detected by a signal generator. An unassigned
measured-value input for the direct measuring system of an active digital drive is used as the
measurement input.
Caution
The different dynamic responses of the drives (following error, drift) in an interpolation group
that has analog and digital axes must be borne in mind.
2.2 Hardware configuration
The following diagram shows the hardware configuration of an analog axis:
Figure 2-1
8
Hardware configuration of an analog axis
Special functions: Analog Axis (TE2)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0