Rockwell-automation 1794-ID2 U.MNL INCREMENTAL ENCODER Manuale Utente Scaricare il pdf (Pagina 21)

1–9Overview of the Incremental Encoder Module

-%#,#(' 0  / 

%- 

(-',* !#+,*

*+, !#+,*

(!#

  

(!#

Count Up pulse (+)

Count Down pulse (-)

(-',*  

(-',*  *+,%-

Note:  ," )*+, *!#+,* .%-   ," (-',* *,#'+ ," .%- 

Filter Function

The filter function is only valid during mode 000 (pulse counting).

You enable the filter function by setting bits in Control word 2. Each

counter can be individually filtered by enabling its associated filter

control bit. However the filter is common to both counters.

When a counter is in mode 000 and its filter is enabled, signal A is

internally sampled at a rate 8 times higher than the filter constant. A

change of state in A has to be valid during 4 samples before it

reaches the counter.

-,)-, *(& #%,*

&)% %($

',*'% (-',*



12 30 120 120 3

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 87 88

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Rockwell-automation 1794-ID2 U.MNL INCREMENTAL ENCODER Manuale Utente Pagina 21