Siemens Sinumerik 840D sl Function Manual page 230

Connecting Sensors/Actuators
7.2 Connecting I/O via PROFIsafe
NCK processing times: PST > 2 * IPO
Time: T(FDI- - >SPL- - INSE)
Formula
Maximum times
Typical times
Time: T(SPL- - OUTSE- - >FDO)
Formula
Maximum times
Typical times
Time: T(FDI- - >FDO)
Formula
Maximum 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 ti-
mes for values n > 2)
3)
This time is valid for the case: PST = n * IPO = 25 ms
This information always applies for communication via PROFINET. The special
features of the various bus systems do not need to be taken into account, except
for the time, determined by the set baud rate and the bus expansion level.
7-230
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
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
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10/15
2)
104 ms
42 ms
2)
112 ms
14 ms
3)
225 ms
56 ms