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Chapter 11—GPI Interface
DME32—Owner’s Manual
Parameter Control
The following table describes how buttons (ON/OFF parameters),
rotary controls and sliders, and pop-up menus can be controlled
using a normally open switch.
High = switch closed Low = switch open
The next table describes how buttons (ON/OFF parameters),
rotary controls and sliders, and pop-up menus can be controlled
using a 10k-ohm linear-scale potentiometer. By connecting the
potentiometer to the IN, +V, and GND terminals, continuously
variable parameter control is possible.
High = potentiometer max. Low = potentiometer min.
Terminal
Usage
Normally Open Switch
Buttons
(ON/OFF parameters)
Rotary controls & sliders
Pop-up menus
Normal
High = ON
Low = OFF
High = max. value
Low = min. value
High = top setting
Low = bottom setting
Reverse
High = OFF
Low = ON
High = min. value
Low = max. value
High = bottom setting
Low = top setting
Low-to-high
Toggles between ON and OFF
when IN changes from low to
high (i.e., when switch
pressed)
Toggles between min. and
max. values when IN changes
from low to high (i.e., when
switch pressed)
Toggles between top and bot-
tom settings when IN changes
from low to high (i.e., when
switch pressed)
High-to-low
Toggles between ON and OFF
when IN changes from high to
low (i.e., when switch
released)
Toggles between min. and
max. values when IN changes
from high to low (i.e., when
switch released)
Toggles between top and bot-
tom settings when IN changes
from high to low (i.e., when
switch released)
Terminal
Usage
10k-ohm linear potentiometer
Buttons
1
(ON/OFF parameters)
1. Transition between low and high occurs at the center position.
Rotary controls & sliders
Pop-up menus
Normal
High = ON
Low = OFF
Continuously variable,
High = max. value
Low = min. value
Continuously variable,
High = top setting
Low = bottom setting
Reverse
High = OFF
Low = ON
Continuously variable,
High = min. value
Low = max. value
Continuously variable,
High = bottom setting
Low = top setting
Low-to-high
Toggles between ON and OFF
when IN changes from low to
high (i.e., when potentiome-
ter raised)
Toggles between min. and
max. values when IN changes
from low to high (i.e., when
potentiometer raised)
Toggles between top and bot-
tom settings when IN changes
from low to high (i.e., when
potentiometer raised)
High-to-low
Toggles between ON and OFF
when IN changes from high to
low (i.e., when potentiometer
lowered)
Toggles between min. and
max. values when IN changes
from high to low (i.e., when
potentiometer lowered)
Toggles between top and bot-
tom settings when IN changes
from high to low (i.e., when
potentiometer lowered)
IN
GPI connection
+V
IN
GPI connection
10k ohm linear
potentiometer
+V
GND
