Rockwell-automation 1734-VHSC24 Very High-Speed Counter Modules User M Uživatelský manuál stáhnout pdf (Strana 20)

Publication 1734-UM003B-EN-P - August 2005

1-10 About the Modules

Operating Mode Features

See the table for a summary of features active in each mode.

Operating Mode Features

The Z Gate/Reset Terminal operates in one of four modes when the

Store Count feature is in use. The four figures below detail the

operation in each mode.

Store Count Mode 1: Store/Continue

In mode 1, the rising edge of a pulse input on the Z Gate/Reset

terminal causes the current counter value to be read and stored in the

Read Data file. The counter continues counting. The stored count is

available in the Stored/Accumulated Count word. The stored count

information remains until it is overwritten with new data.

Store/Continue

Operating Feature Counter

Up / Down

Encoder

X1, X2 & X4

Period

/Rate

Continuous

/Rate

Rate

Measurement

PWM

Preset Y Y N N N N

Rollover Y Y N N N N

Software Reset Y Y Y Y Y Y

Store Count -

Z Gate / Reset

4 modes

YYNN N N

Scale Input Count at

Z Gate / Reset

NNYY N N

Z Gate / Reset Invert Bit Y Y Y Y N N

Enable /Force Outputs Y Y Y Y Y Y

Assign Outputs Y Y Y Y Y Y

Operate Outputs

(Based On)

(Count)

(PWM Value)

Sample Period N N N N Y Y

ead, Store Count,

nd Continue Counting

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 73 74

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