DNF Controls GTP-32 - Manual (Page 13)

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3) For each GPI, do the following:
Note: It is only necessary to change these settings to achieve
specific functions. Under normal use these will remain at their
default settings.
Enter a label name to help identify the GPI with a source
function.
Set the “User Define ON State”. Click on the drop down arrow.
Select OPTO ON if the GPI is considered “ON” when
power (+V or –V) is applied across the GTP-32’s opto-
isolator 2-wire input.
Select OPTO OFF if the GPI is considered on when no
power is applied across the GTP-32’s opto-isolator 2-
wire input.
Set the “User Defined ON Mode”. Click on the drop down arrow.
Select LATCHED if the GPI source signal turns on and stays
on when activated. The GPI source signal turns off and
stays off when de-activated (GPI follows the source signal).
This is the recommended setting.
Select MOMENTARY if the GPI source signal turns on for a
specific duration then automatically turns off, when
activated.
If MOMENTARY is selected, enter a “Debounce” time in the
DEBOUNCE box. If LATCH was selected, debounce time is
ignored.
The debounce time is used to filter out unwanted GPI
signals. If the debounce time is greater than that GPI’s on
time, then the GPI will be ignored. If the debounce time is
less that the GPI on time, then the GPI will be detected.
Set the debounce time to the minimum on time of the GPI
to be detected.
All debounce time entries are automatically multiplied by
10milliseconds. The minimum entry is “1”, for 10
milliseconds. The maximum entry is “255” for 2550
milliseconds. All entries greater than “255” will be set to
“255”.
4) After entering GPI configuration data, click on SAVE to save the
entered configuration data or click on CANCEL to exit without
saving.