Siemens SIMATIC S7-400H Manual page 66

Link-up and Update
Note
If T (DP master system) < 0 the calculation is to be stopped here. Possible
P15
remedies are listed after the following example calculation. Make the appropriate
modifications and start the calculation from 1 again.
6. Select the minimum of all the T
This time is then known as T
7. Determine the share of the maximum blocking time for I/O classes > 15
determined by the minimum I/O hold time (T
T
P15_OD
]
Note
If T > T
P15_OD
listed after the following example calculation. Make the appropriate modifications
and start the calculation from 1 again.
8. From section 5.3.4 determine the share of the maximum blocking time for
priority classes > 15 determined by the user program (T
Note
If T
P15_AWP
are listed after the following example calculation. Make the appropriate
modifications and start the calculation from 1 again.
5-22
P15
P15_HW
= 50 ms + min. I/O hold time
the calculation is to be stopped here. Possible remedies are
P15_HW
> T the calculation is to be stopped here. Possible remedies
P15_HW
(DP master system) values.
.
):
P15_OD
P15_AWP
S7-400H Programmable Controller Fault-Tolerant Systems
[2
).
A5E00068197-04