System Functions
135
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)
100
SET_CLKS
Set time-of-day and clock status
MODE = 1
192
112
75
66
xx
xx
MODE = 2
109
62
41
36
xx
xx
MODE = 3
189
115
75
69
xx
xx
103
DP_TOPOL
Detemine bus topology in a DP master
system first call, REQ = 1
272
160
109
96
xx
xx
Intermediate call
46
27
19
16
xx
xx
Last call BUSY = 0
49
28
20
17
xx
xx
104
CIR
Controls the CiR procedure
MODE = 0, information
19
11
8
6
xx
–
MODE = 1, Enable CiR procedure
19
11
8
6
xx
–
MODE = 2, Disable CiR procefure entirely
19
11
8
6
xx
–
MODE = 3, Disable CiR procedure
partially
19
11
8
6
xx
–