Siemens SIMATIC ET 200M Manual page 240

Further information on time calculation
The following more precise equations apply for the time calculation:
Inputs
+ Σ [di
t [µs] = K
i t
n = 4
with K = 60,
t
= 90
Outputs
+ Σ [do
t [µs] = K
o o
n = 4
with K = 70,
o
= 80
4 On Section 6.3
Options for reading out the diagnosis
The following supplement applies for Table 6-7:
Automation system
with DP master
SIMATIC S7/M7
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11
(1 + 5b ) + ai (30 + 16w
n n n
if ai = 0
n
otherwise
11
(1 + 4b ) + ao (25 + 10w
n n n
if ao = 0
n
otherwise
Block or register in
STEP 7
SFB 52
SFB 54
)]
n
)]
n
Application
Read data record from a Online help of
DP slave STEP 7
Receive interrupts from
the interrupt OBs
See ...
5