Rockwell-automation 1769-HSC Compact High Speed Counter Module Manual de usuario descargar pdf (Pagina 105)

Rockwell Automation Publication 1769-UM006E-EN-P - July 2013 105

Module Configuration, Output, and Input Data Chapter 4

Current Rate (Ctr[0].CurrentRate to Ctr[3].CurrentRate)

This 32-bit value is the current rate value, scaled by CtrnScalar, from the counter.

This uses the Cyclic Rate Calculation Method. See

page 32 for more

information.

Rate-based ranges use this value for comparisons, even when the Ctr[n].RateValid

bit is zero.

Pulse Interval (Ctr[0].PulseInterval and Ctr[1].PulseInterval)

This is the time, in microseconds, between the last two pulses for the counter.

The pulses indicated here are those transitions on which the count value can

change. For example, in quadrature X1 mode, these are the successive rising edges

of A only.

If more than two pulses have occurred since the value was last read, the value

indicates only the time between the last two pulses that have been processed.

IMPORTANT

For the L23E packaged controllers embedded HSC, the current rate words

do not apply; they are always returned as 0 in the input array. The rate

words in this section apply to the 1769-HSC module and the CMX 5370

L2 packaged controllers embedded HSC.

Input Array Words 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

8 Counter 0 Current Rate Ctr[0].CurrentRate

18 Counter 1 Current Rate Ctr[1].CurrentRate

26 Counter 2 Current Rate Ctr[2].CurrentRate

32 Counter 3 Current Rate Ctr[3].CurrentRate

IMPORTANT

This value is current only when the Ctr[n].RateValid bit is set (1).

IMPORTANT

For the L23E packaged controllers embedded HSC, the pulse interval

words do not apply; they are always returned as 0 in the input array. The

pulse interval words in this section apply to the 1769-HSC module and

the CMX 5370 L2 packaged controllers embedded HSC.

Input Array Words 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

10 Counter 0 Pulse Interval Ctr[0].PulseInterval

20 Counter 1 Pulse Interval Ctr[1].PulseInterval

1 2 ... 100 101 102 103 104 105 106 107 108 109 110 ... 169 170

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Rockwell-automation 1769-HSC Compact High Speed Counter Module Manual de usuario Pagina 105