Rockwell-automation 1769-HSC Compact High Speed Counter Module Manual de usuario descargar pdf (Pagina 83)

Rockwell Automation Publication 1769-UM006E-EN-P - July 2013 83

Module Configuration, Output, and Input Data Chapter 4

Storage Mode (CtrnConfig.StorageMode_0 through

Ctr

nConfig.StorageMode_2)

These three bits apply to Counters 0 and 1 only. They define how the module

interprets the Z input, as shown below. Each bit works independently. If bit 0 and

bit 2 are set simultaneously, a Z event causes the Current Count Value to be

stored and then preset.

Linear (Ctr0Config.Linear through Ctr3Config.Linear)

This bit indicates how the counter operates upon reaching a CtrnMinCount or

CtrnMaxCount.

• 0 = Ring Counter

• 1 = Linear Counter

See

page 28 for a description of ring and linear counter operation.

Set bit For function

CtrnConfig.StorageMode_0 Stores the Current Count Value on the rising edge of Z to

Ctr[n].StoredCount in the input file.

CtrnConfig.StorageMode_1 Holds the counter at its Current Count Value whileZ=1.

CtrnConfig.StorageMode_2 Presets the Current Count Value on the rising edge of Z.

IMPORTANT

Z = internal Z. Internal Z is the version of the Z input pin as modified by

the output array control bits Z Invert and Z Inhibit.

TIP

The Ctr1Config.Storage Mode bits are reserved if NumberofCounters_1

and NumberofCounters_0 are set to 00 (one counter). Attempting to set

reserved bits will result in a configuration error.

IMPORTANT

Do not change this value while the counter is enabled. Attempting to do

so will result in a BadModConfigUpdate error. See page 120 for a list

of prohibited settings.

IMPORTANT

Do not change this value while the counter is enabled. Attempting to do

so will result in a BadModConfigUpdate error. See page 120 for a list of

prohibited settings.

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Rockwell-automation 1769-HSC Compact High Speed Counter Module Manual de usuario Pagina 83