Rockwell-automation 1794-ID2 U.MNL INCREMENTAL ENCODER Instrukcja Użytkownika Pobierz pdf (Strona 20)

1–8 Overview of the Incremental Encoder Module

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Store Function

Use the store function to copy the value in the counter register

(Counter) to the latch register (StoreValue).

The StoreControl parameter determines the store function. Execution

occurs on either the positive or negative edge of input signals G and

Z respectively (see table). The parameter is a 2–bit binary code in

write word 1 (bits 11 and 12)

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The parameter Stored must be reset (0). Stored is set (1) when the

operation is completed. Reset after the operation with StoreReset.

Store Control = 1

Counter Register

Logic

Stored = 0

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Example

Store Register

Latched = 1

Limitation Function

If the control bit RangeLimited = 1, the counter counts up to the

preset value and restarts at 0. Counting down, the counter reaches the

preset value on the next pulse if the current counter value = 0.

RangeLimited = 0 corresponds to RangeLimited = 1 if the preset

value = FFFF in hex = 65535 in decimal.

The flag PresetReached is set when the counter is equal to the preset

value. Use PresetReset to reset the flag.

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 87 88

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