Siemens SINUMERIK 840D sl Function Manual page 220

Connecting Sensors/Actuators
7.2 Connecting I/O via PROFIsafe
NCK processing times: PST p2 * IPO
Time:: T(FDI–>SPL–INSE)
Formula
Max. times
Typical times
Time:: T(SPL–OUTSE–>FDO)
Formula
Max. times
Typical times
Time:: T(FDI–>FDO)
Formula
Max. times
Typical times
1) Typical times: PST = 16 ms; IPO = 8 ms; OB40_INT = 2 ms
NCK processing times: PST > 2 * IPO
Time:: T(FDI–>SPL–INSE)
Formula
Max. times
Typical times
Time:: T(SPL–OUTSE–>FDO)
Formula
Max. times
Typical times
Time:: T(FDI–>FDO)
Formula
Max. times
Typical times
with:
PST: PROFIsafe clock cycle
PST = n * IPO; with n = 1, 2, 3, ...
1)
Typical times: PST = 18 ms; IPO = 6 ms; OB40_INT = 2 ms
2)
This time is valid for the case: IPO = 8 ms, n=3 => PST = 24 ms; (maximum
times for values n > 2)
3)
This time is valid for the case: PST = n * IPO = 25 ms
7-220
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 05.2008 Edition
2 * PST + 1 * IPO
2 * 50 ms + 25 ms
1)
2 * 16 ms + 8 ms
IPO + 0...m * IPO + OB40_INT
25 ms + 50 ms + 50 ms
1)
8 ms + 2 ms
2 * PST + 2 * IPO + 0...m * IPO + OB40_INT
100 ms + 50 ms + 50 ms + 50 ms
1)
2 * 16 ms + 2 * 8 ms + 2 ms
2 * PST + 1 * IPO
2 * 48 ms + 8 ms
1)
2 * 18 ms + 6 ms
IPO + (n–2) * IPO + 0...m * IPO + OB40_INT
16 ms + 48 ms + 48 ms
1)
6 ms + 6 ms + 2 ms
2 * PST + PST + 0...m * IPO + OB40_INT
100 ms + 25 ms + 50 ms + 50 ms
1)
2 * 18 ms + 18 ms + 2 ms
104 ms
42 ms
112 ms
14 ms
225 ms
56 ms
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05.08
125 ms
40 ms
125 ms
10 ms
250 ms
50 ms
2)
2)
3)