Measuring Without Measuring Window; Measuring With Measuring Window: Measuring Edge Is Detected In Window; Measuring With Measuring Window: No Measuring Edge In The Window - Siemens SIMOVERT MASTERDRIVES MC Series Product Information

You can determine the response times for your configuration using the following tables. The
values in the tables refer to the selected system clock cycles. By using the actual times, you
can calculate the response time in milliseconds.
The following abbreviations are used in the tables:
(IS) Interpolator or position controller clock cycle (this can be selected when configuring 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

MC_MeasuringInput
→ ready to detect the measuring edge
Detecting the measuring edge
→ result in the Technology CPU for further processing
Total
minimum time between 2 measurements *)
*): 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
MC_MeasuringInput
→ ready to evaluate the measuring range (start of the measuring window)
Reaching the start of the measuring window at the axis (mechanical system)
→ ready to detect the measuring edge
Detecting the measuring edge
→ result in the Technology CPU for further processing
Total
minimum time between 2 measurements *)
*): 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

MC_MeasuringInput
→ ready to evaluate the measuring range (start of the measuring window)
Reaching the start of the measuring window at the axis (mechanical system)
→ ready to detect the measuring edge
Reaching the start of the measuring window at the axis (mechanical system)
→ reset: "Ready to detect the measuring edge"
Resetting the measure ready signal
→ feedback to the Technology CPU to continue processing
Total
minimum time between 2 measurements *)
*): In addition, the restrictions of the system must be taken into account.
Connecting SIMOVERT MASTERDRIVES MC to the Technology-CPU
Product Information, 03/2008, A5E00272072-05
Commissioning
4.3 Creating a STEP 7 project
MASTERDRIVES MC
3 (IS) + 3 (DP) + 2 (DR)
2 (IS) + 8 (DP)
5 (IS) + 11 (DP) + 2 (DR)
MASTERDRIVES MC
2 (IS)
2 (IS) + 3 (DP) + 2 (DR)
2 (IS) + 8 (DP)
5 (IS) + 11 (DP) + 2 (DR)
MASTERDRIVES MC
2 (IS)
2 (IS) + 3 (DP) + 2 (DR)
2 (IS) + 3 (DP) + 2 (DR)
2 (IS) + 8 (DP)
7 (IS) + 14 (DP) + 4 (DR)
61