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CHAPTER 16 |
109
SYSTEM MENU
GPI Menu
The
GPI
menu contains sub-menus that allow you to enable or disable GPI functionality and set exactly which
functions and behaviors are controlled via GPI.
GPI Menu
♦
The
GPI Enable
control is used to turn GPI on or off. Please note that GPI must be disabled in order to edit
and configure the individual GPI functions.
♦
The
GPI Function A-D
and
GPI Function E-H
sub-menus each contain the controls for their four
respective GPI’s.
¸
The
Function
control in each GPI channel determines which available parameter is affected when the
input signal is received.
¸
The
Lo
and
Hi
controls work together to determine the specific action that occurs to the parameter
selected by the Function control.
Hi
is the normal mode of operation.
Lo
is the mode when the GPI is
pulled to ground.
Pins 2 through 9 correspond to GPI inputs 1 through 8. Pins 18 through 25 are grounds.
If a system is using relay logic, a contact closure from GPI to ground is “engaged” and an open contact is “not
engaged”.
If supplied by a 5V GPO, 0V is GPI “engaged” or “Lo” and 5V is GPI “not engaged” or “Hi”. A 3.3V signal will also
work.
For continuous behavior, use one GPI for the action as follows:
♦
LO - Setting 1
♦
HI - Setting 2