Rockwell-automation 1794-ID2 U.MNL INCREMENTAL ENCODER Instrukcja Użytkownika Pobierz pdf (Strona 19)

1–7Overview of the Incremental Encoder Module

.'& -&)( 1  0 

Preset Function

Use the preset function to copy a value from the preset register to the

counter register.

).(-"+ "$&,-"+

+","- "$&,-"+

)$&

  





+","- "$&,-"+

  

Method 1

Method 2

The flag PresetReached is set when the counter register and the

preset register are equal (if the counter preset is reached, or if the

counter has been loaded with the preset value). This flag is reset on a

positive edge of PresetReset after the operation and can only be set

after at least one additional counting pulse.

Gate Function

Use the gate function to determine when counting starts and

stops.You can use this function to measure distance.

The parameter GateControl determines the gate function. The gate

signal is connected to input G. It is a 2–bit binary code in write word

1 or 2, bits 09 and 10

)+!

)+

Gate Control Function





&-,

 

&(+0   -" )(-+)' &-,







   ) $-" #.( -&)( )( &(*.-  ).(- &, &(!"*"(!"(-

   ).(-&($ )('0 &# -&/"

   ).(-&($ )('0 &#&( -&/"

   '&+-&)( &#(!'')-%"+ )(!&-&)(, +"

#.'#&''"! +"#"+ -) '&+-&($ -%" )!.'" %*-"+ 

Gate Control = 1

Counter Register

Logic

G=1

%" ).(-"+ &, ).(-&($ &#

Example

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 87 88

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