Rockwell Automation 1794-ID2 U.MNL INCREMENTAL ENCODER User Manual

Page 60

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5–8

How Communication Takes Place and I/O Image Table Mapping with the DeviceNet Adapter

Publication 1794ĆUM015B-EN-P - May 2001

Definition

Bit

Word

Word 5

Filter Selection

Bit 00

Filter A0 enable - When this bit is set (1), anda counter 0 is in mode 000 (pulse counting), signal A0 is filtered by

a digital low pass filter with selectable filter constant.

Bit 01

Filter A1 enable - When this bit is set (1), anda counter 1 is in mode 000 (pulse counting), signal A1 is filtered by

a digital low pass filter with selectable filter constant.

Bit 02Ć07

Unused

Bits 08Ć09

(10Ć11)

09

(11

)

08

(1

0)

Filter Constant bits - This constant is common to both counters.

0

0 73.5kHZ or minimum 0.007ms pulsewidth

0

1 37.8kHz or minimum 0.013ms pulsewidth

1

0 12.8kHz or minimum 0.04ms pulsewidth

1

1 1.2kHz or minimum 0.4ms pulsewidth

Write

Words

6-7

Bits 00-15

(00-17)

Not used - set to 0.

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