System Functions
111
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)
14 DPRD_DAT Read consistent user data (n bytes)
via integrated DP interface 3 bytes
56 36 24 21 xx xx
via integrated DP interface 32 bytes 60 37 25 22 xx xx
via external DP interface 3 bytes 71 45 32 27 xx xx
via external DP interface 32 bytes 187 146 115 107 xx xx
15 DPWR_DAT
Write consistent user data (n bytes)
via integrated DP interface 3 bytes
60
1)
/
62
2)
36
1)
/
37
2)
25
1)
/
25
2)
21
1)
/
21
2)
xx
1)
/
xx
2)
xx
1)
/
xx
2)
via integrated DP interface 32 bytes 64
1)
/
66
2)
37
1)
/
41
2)
25
1)
/
26
2)
21
1)
/
22
2)
xx
1)
/
xx
2)
xx
1)
/
xx
2)
via external DP interface 3 bytes 66
1)
/
68
2)
42
1)
/
43
2)
30
1)
/
31
2)
27
1)
/
27
2)
xx
1)
/
xx
2)
xx
1)
/
xx
2)
via external DP interface 32 bytes 125
1)
/
128
2)
96
1)
/
98
2)
83
1)
/
85
2)
79
1)
/
80
2)
xx
1)
/
xx
2)
xx
1)
/
xx
2)
17 ALARM_SQ Generate acknowledgeable block-related
messages.
First call, SIG = 0 –> 1
276 165 116 98 xx xx
Empty call 123 72 48 41 xx xx
18 ALARM_S Generate unacknowledgeable
block-related messages.
First call, SIG = 0 –> 1
263 155 108 88 xx xx
Empty call 111 64 43 36 xx xx
1)
without data transmission to the process image
2)
with data transmission to the process image