Rockwell-automation 1769-HSC Compact High Speed Counter Module Manual de usuario descargar pdf (Pagina 31)

Rockwell Automation Publication 1769-UM006E-EN-P - July 2013 31

Module Operation Chapter 2

Preset/Reset

Preset sets the counter to a zero or non-zero value you define. Reset the counter

by setting this value (CtrnPreset) to zero.

Counter Reset

Refer to page 73 in Chapter 4 for details on performing a default counter reset for

the CMX 5370 L2 packaged controller and the 1769-HSC/B module only. The

L23E packaged controller and the 1769-HSC/A module do not have this

functionality.

Soft Preset

Preset can be programmed to occur by setting the appropriate output control bits

via your control program. Setting the CtrnSoftPreset bit in the output array

causes the counter to be preset, changing the count to the value in CtrnPreset.

Z Preset

Preset can be programmed to occur based on the actions of the Z-input signal.

Autopreset

If the module is configured such that CtrnMaxCount < Ctr[n].CurrentCount or

CtrnMinCount > Ctr[n].CurrentCount, then the module will automatically

change Ctr[n].CurrentCount to the CtrnPreset value and set the

CtrnPresetWarning bit.

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Rockwell-automation 1769-HSC Compact High Speed Counter Module Manual de usuario Pagina 31