Rockwell Automation 1769-HSC Compact High Speed Counter Module - Manual (Page 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 (Ctr
nPreset) 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 Ctr
nSoftPreset bit in the output array
causes the counter to be preset, changing the count to the value in Ctr
nPreset.
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 Ctr
nMaxCount < Ctr[n].CurrentCount or
Ctr
nMinCount > Ctr[n].CurrentCount, then the module will automatically
change Ctr[
n].CurrentCount to the CtrnPreset value and set the
Ctr
nPresetWarning bit.