System Functions
127
S7-400 Instruction List
A5E00267845-01
Execution Time in
s
SFC
No.
SFC Name
Function
CPU
412
CPU
414
CPU
416
CPU
417
CPU
414-4H
417-4H
(solo)
CPU
414-4H
417-4H
(redun-
dant)
51
RDSYSST
”Diagnostic Data DP Slave” partial list
Display via configured diagnostic address
(00B4)
First call
385
266
213
266
272
351
Intermediate call, REQ = 0 (00B4)
--
--
115
--
149
148
Last call (6 - 240 bytes) (00B4)
246
170
135
170
174
173
52
WR_USMSG
Write user entry in diagnostic buffer
write with message
151
93
66
54
xx
xx
without message
87
53
36
3030
xx
xx
54
RD_DPARAM
Read dynamic parameters
local AI 8*13 bits
154
85
57
50
xx
xx
distributed AI 8*12 bits (DS1 = 14 bytes)
167
101
68
59
xx
xx
55
WR_PARM
Write dynamic parameters
local AI 8*13 bits
359
228
164
146
xx
xx
distributed
First call AI 8*12 bits (14 - 240 bytes)
308
182
123
107
xx
xx
distributed
Intermediate/last call, REQ = 0
138
82
55
48
xx
xx