Rockwell-automation 1734-VHSC24 Very High-Speed Counter Modules User M Manual de usuario descargar pdf (Pagina 32)

Publication 1734-UM003B-EN-P - August 2000

3-2 Very High-Speed Counter Module Input and Output Data

Detailed Description of

Data Table Information

Present Channel Data (Input Word 1)

This is a 32-bit unsigned long-word value representing the current

count of the 24-bit counter (configurations: count [0], x1 encoder [1],

x2 encoder [2], PWM [3], x4 encoder [4]) or the frequency

(configurations: period/rate [5], continuous/rate [6], rate measurement

[7]). The range of values is 0 ≤ value ≤ 0x00FFFFFF (16,777,215).

Stored/Accumulated Channel Data (Input Word 2)

This is a 32-bit unsigned long-word value representing the stored

count of the counter at the time of some specified event. In counter

configurations (configurations: count [0], x1 encoder [1], x2 encoder

[2], x4 encoder [4]) without store modes selected, these words are not

updated. With store modes selected, they are the stored value of the

counter at the time of the specified event (for example, rising edge of

Z input). In PWM [3] configuration it is the counter value at the end of

the period specified by the product of the time base x gate interval. In

period/rate [5] and continuous/rate [6] configurations it is the total

accumulation of unscaled Z pulses (for example, if scaling is set to

128, after 128 Z pulses the accumulator increases by 128 counts).

The maximum frequency that accumulation can follow in these two

modes is 200 Hz x scalar value (for example, 200 Hz x 128 is 25 kHz).

Scalar

8-bit value used to divide the Z input by 2

Output Ties 0 0000T3T2T1T0

Output Ties 1 0000T3T2T1T0

Rollover Value 32-bit value at which the counter is commanded to rollover

Preset Value 32-bit value the counter is to be set to when CP is asserted

On Value 1 32-bit value that sets the compare window

Off Value 1 32-bit value that sets the compare window

On Value 2 32-bit value that sets the compare window

Off Value 2 32-bit value that sets the compare window

On Value 3 32-bit value that sets the compare window

Off Value 3 32-bit value that sets the compare window

On Value 4 32-bit value that sets the compare window

Off Value 4 32-bit value that sets the compare window

PWM Safe State Value 16-bit safe state value for the PWM signal

Counter Control SS Value 00000VRCPCR

Output Control SS Value DS ES OE FO DS ES OE FO

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 0

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 73 74

Sin comentarios

Rockwell-automation 1734-VHSC24 Very High-Speed Counter Modules User M Manual de usuario Pagina 32