Siemens SIMATIC ET 200MP Manual page 50

Response times
B.1 Response times of the ET 200MP
Example configuration for the calculation of the backplane bus cycle time
The following are used in the example:
Table B- 1 Example configuration for the calculation of the backplane bus cycle time
I/O module
Analog output module AQ 4xU/I ST
Analog output module AQ 4xU/I ST with value
status
Digital output module DQ 32x24VDC/0.5A ST
with value status
Digital input module DI 32x24VDC HF
Analog input module AI 8xU/I/RTD/TC ST
Sum
Example calculation of the backplane bus cycle time
Backplane bus cycle time in μs:
● (20 + 3) x 0.0668 + 1.6131 = 3.1495 ≈ 4 μs (rounded)
plus
● (25 + 4) x 0.0959 + 2.5901 = 5.3712 ≈ 6 μs (rounded)
plus
● Operating system processing time 500 μs
Result of backplane bus cycle time
Backplane bus cycle time = 510 μs
50
Output data Input data
in bytes in bytes
8 -
8 1
4 4
- 4
- 16
20 25
IM 155-5 PN ST interface module (6ES7155-5AA00-0AB0)
Number of Number of
output input
addresses addresses
1 -
1 1
1 1
- 1
- 1
3 4
Manual, 08/2013, A5E03612323-02