Siemens PPU 26x.3 series Manual page 95

The following diagrams indicate the different data transfer types:
● Differential signal transfer:
Note
Differential signal transfer is the preferred technique, as it is insensitive to electromagnetic
disturbances.
● Asymmetrical signal transfer:
PPU and components
Manual, 10/2015, 6FC5397-2DP40-5BA3
Interface description
6.7 Handwheel
95