S5-90U/S5-95U
Function Modules
Example 2: Approaching a Setpoint in Down-Count Direction
Figure 16-24. Approaching a Setpoint in Down-Count Direction
Enable
input
1000
2000
3000
4000
5000
6000
7000
Example of
actual value
Output,
diagnostic bit
setpoint
reached
Setpoint
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
Direction of traverse
•
With actual value = 7000, the enable input is set to ”1”.
•
With actual value = 3000, the setpoint is reached, the output and the diagnostic bit ”setpoint
reached” are set.
•
With actual value = 1000, the enable input is set to ”0”, the output and the diagnostic bit are
reset.
Example 3: Reversal of Direction after Approaching a Setpoint
Figure 16-25.
Approaching a Setpoint in Up-Count Direction and
Consecutive Reversal of Direction
Change of direction
Enable
input
1000
2000
3000
4000
5000
6000
7000
Output,
diagnostic bit
setpoint
reached
Setpoint
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
Direction of traverse
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
Direction of traverse
Example of
actual value
•
With actual value=1000, the enable input is set to ”1”.
•
With actual value=3000, the setpoint is reached, the output and the diagnostic bit ”setpoint
reached” are set.
•
With actual value=4500, the traversing path is reversed.
•
With actual value=1000, the enable input is set to ”0”, the output and the diagnostic bit are
reset.
Note
Set outputs can be reset only via a ”0” signal to the enable input.
EWA 4NEB 812 6115-02b
16-37
Содержание SIMATIC S5-90U
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