Stober POSIDRIVE MDS 5000, Руководство пользователя

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System blocks
Block descriptions
ID 441692.01
STÖBER ANTRIEBSTECHNIK
303
468 Low pass filter I32 with overflow
Description
The value in input In is low-pass filtered and output to output Out with the time constant T .
T is scaled with the following formula:
(Tau and cycle time in ms)
When a parameter is defined for
T , the definition of C43 can be used, for example.
The function of the low pass can be influenced by the input Reset . When Reset contains the
value 0, the low-pass function is executed. When Reset contains the value 1, the value 0 is
output to Out . When the value 2 is specified in Reset , the input value is output to Out without
being filtered.
The difference between this block and block 148 is the behavior when the input variable
overflows. With block 148, the output value always follows into the range with the reverse
sign above 0 during an overflow of the input value.
With block 468, an overflow or underflow also occurs with the output value.
When
Reset equals 0 and the filtered output value overflows, the output Wrap is set to
TRUE for one cycle.
Inputs
No. Name Datatype Scaling Description
1 In I32 Value to be filtered
2
T
I32 Skal.-Fkt. 11 Time constant
3 Reset I8
0: Normal function as low pass
1: Filter permanently to 0 (
Out= 0)
2: Filter on time constant 0 ( Out=In )
Outputs
No. Name Datatype Scaling Description
4 Out I32 Filtered value
5 Wrap B
TRUE when an overflow or underflow of the filtered output value
occurred during the last call of the block.
6 TP I32 Internal variable