Siemens SIMODRIVE 611U - Page 56

Commissioning
4.4 Setting up a STEP 7 project
Connecting the SIMODRIVE 611U to the Technology CPU
56 Product Information, 03/2008, A5E00272066-05
The following abbreviations are used in the tables:
● (IS): Interpolator or position control cycle clock (can be selected for the configuration of
the measuring input)
● (DP): cycle time on the PROFIBUS DP
● (DR) Cycle time in the drive (time slice in which the measuring function is evaluated)
Table 4-1 Measuring without measuring window
SIMODRIVE 611U
MC_MeasuringInput
→ Ready to detect the measuring edge
3 (IS) +7 (DP)
Detection of the measuring edge
→ Result in the technology CPU for further processing
2 (IS) +10 (DP)
Total
Minimum time between two measurements *)
5 (IS) +17 (DP)
*): In addition, the restrictions of the system must be taken into account.
Table 4-2 Measuring with measuring window: Measuring edge is detected in the window
SIMODRIVE 611U
MC_MeasuringInput
→ Ready for the evaluation of the measuring range (start of the measuring window)
2 (IS)
Start of the measuring window on the axis (mechanical) reached
→ Ready to detect the measuring edge
2 (IS) +7 (DP)
Detection of the measuring edge
→ Result in the technology CPU for further processing
2 (IS) +10 (DP)
Total
Minimum time between two measurements *)
5 (IS) +17 (DP)
*): In addition, the restrictions of the system must be taken into account.
Table 4-3 Measuring with measuring window: No measuring edge in the window
SIMODRIVE 611U
MC_MeasuringInput
→ Ready for the evaluation of the measuring range (start of the measuring window)
2 (IS)
Start of the measuring window on the axis (mechanical) reached
→ Ready to detect the measuring edge
2 (IS) +7 (DP)
Start of the measuring window on the axis (mechanical) reached
→ Reset: "Ready to detect the measuring edge"
2 (IS) +7 (DP)
Reset the measurement readiness
→ Confirmation in the technology CPU for further processing
2 (IS) +10 (DP)
Total
Minimum time between two measurements *)
7 (IS) +24 (DP)
*): In addition, the restrictions of the system must be taken into account.