System Functions
114
S7-400 Instruction List
A5E00267845-01
Execution Time in
s
SFC
No.
SFC Name
Function
CPU 412
CPU
414
CPU
416
CPU
417
CPUs
414-4H
417-4H
(solo)
CPUs
414-4H
417-4H
(redun-
dant)
39
DIS_IRT
Discard new events
Block all events (MODE = 0)
254
126
85
78
xx
xx
Block all events of a priority class
(MODE = 1)
55
31
21
18
xx-xx
xx-xx
Block one event (MODE = 2)
31
18
13
11
xx-xx
xx - xx
40
EN_IRT
Stop discarding events
Enable all events (MODE = 0)
205
121
82
71
xx
xx
Enable all events in a priority class
(MODE = 1)
54
30
20
17
xx - xx
xx - xx
Enable an event (MODE = 2)
29
17
12
10
xx - xx
xx - xx
41
DIS_AIRT
Delay interrupt events
the first time delay is activated
1)
215
129
86
77
xx
xx
if the delay is already activated
18
10
8
6
xx
xx
1)
When activating the delay for the first time, the SFC 41 runtime depends on the priority class in which the SFC 41 is called. The specified
runtime refers to the call in OB 1. It decreases while the priority class number increases.