S5-90U/S5-95U
Onboard Interrupt Inputs
10.4
Calculating Interrupt Reaction Times
The interrupt reaction times is the amount of time that passes from the first occurence of an
interrupt until the first statement in OB3 is called up. The interrupt reaction time is dependent upon
the delay time of the interrupt input and upon the corresponding operating system run time.
If several interrupt or counter inputs are used, the time elapsing until OB3 is called up increases in
accordance with the interrupt priorities (see Section 10.3).
In order to make sure that all interrupts are recognized in the S5-95U, the interrupt-triggering signals
need to have a minimum pulse duration, i.e. minimum pulse duration interrupt reaction time.
Calculate the Programmable Controller’s Interrupt Reaction Times as Follows:
Programmable controller’s interrupt reaction time = Basic reaction time + Additional reaction times
The basic reaction time is 0.6 ms and is valid if the following conditions exist.
•
No integrated FBs were used
•
The parameters for the integral clock are not set
•
There are no programmer/OP functions present
and
•
No SINEC L1 is connected.
The additional reaction times are variable. They are listed in Table 10-6.
Table 10-6. Additional Reaction Times
Additional Functions
of the Programmable Controller
Integrated FBs (S5-95U only)
0.5 ms
0.2 ms
0.4 ms
Parameters set for clock (S5-95U only)
OP Functions
Programmer functions:
Block status/transfer
Output address
Compress block via programmer
- If no blocks are moved
- If blocks are moved
0.5 ms
18 ms per KB
-
Depending on the number of
blocks present (after overall
reset 31 ms)
-
600 ms per 1K statements in
the block to be moved
Variable Reaction
Times
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a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
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SINEC L1 connected to the programmer interface
8.0 ms
See relevant Section in the Manual
Second interface (for S5-95U variants with a second
interface)
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