System Function Blocks
146
S7-400 Instruction List
A5E00267845-01
Execution Time in
s
SFB
No.
SFB Name
Function
CPU
412
CPU
414
CPU
416
CPU
417
CPU
414-4H
417-4H
(solo)
CPU
414-4H
417-4H
(redun-
dant)
53
WRREC
Write data record in a DP slalve via
integrated DP interface,
First call (1-10 bytes)
314
182
119
105
xx
xx
Intermediate call
130
76
50
43
xx
xx
Last call
132
77
51
45
xx
xx
53
WRREC
Write data record in a DP slave via
external DP interface,
First call (2-14 bytes)
312
176
116
101
xx
xx
Intermediate call
130
76
50
43
xx
xx
Last call
134
77
51
45
xx
xx
54
RALRM
Receive interrupt from a DP slave
Runtime measurement for
non-I/O-dependent OBs, MODE = 1,
OB 1
118
73
48
42
xx
xx
54
RALRM
Receive interrupt from a DP slave
Runtime measurement at integrated DP
interface, MODE = 1,
OB 40, OB 83, OB 86
242
141
92
81
xx
xx
OB 55 to OB 57, OB 82
245
145
95
83
xx
xx
OB 70
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xx
xx