ARC130S SECTION
4
ARC130S 060801 Version 1 Issue 1
4.8
GPI
This allows you to select GPI inputs On, Off,
On+Auto and Binary.
Off
The GPI function is inactive.
On
The GPI function is active. (One contact closure
per memory recall)
On+Auto
The GPI function is active. (One contact closure
per memory and all four contact closures turns on
Auto mode)
Note In order that the GPI contacts may be
released without the unit reverting to another GPI
memory recall, it is necessary that all four GPI
contacts are open for at least one field after Auto
has been selected using the GPI. Operation of the
GPI is suspended until this condition has been
met.
Binary
When the GPI input is put into binary mode the
four GPI inputs are treated as one four bit number.
This means that there are sixteen possible GPI
input states. Each of the GPI input-states recalls a
special GPI memory. These memories store the
same parameters as the User Display memories
and the Auto (video index / line 23) memories.
Thus one should set up the machine as required
(size, asp, pan, pos, bypass and output aspect
ratio signaling parameters) then, one can program
the required GPI memory. When that particular
GPI state is present the appropriate memory is
recalled.
This is useful as the GPI port can be used to
emulate the four video index signaling bits if they
are not present on the input signal.
GPI Mem
This lets you program the binary GPI memories. If
you select this, the display shows:
GPI 0
Pressing the arrow keys cycles through GPI 1 ,
GPI 2.......GPI 15.
You can then store the GPI memory settings for
the indicated binary GPI memory.
GPI
GPI In
Off
On
On+Auto
Binary
GPI Mem
GPI 0…
…GPI 15
GPI Out
Off
On
Invert
Assign
GPI 0…
…GPI 15
Using the cardedge and active front panel menus
an extra item will appear when an 8-way GPI board
is detected.
This is
GPI Out
This allows the GPO to be turned
OFF, (all contacts open), turn it ON (default
setting) or turn it ON but work inverted (i.e. contact
open to indicate active memory).
The menu text is
GPI Out - Off
On
Invert
Version A20 of the software will let you assign the
GPI’s from the cardedge controls as well as from
the active front panel and RollCall.
It has 8 entries (if 8 GPI inputs are available or 4 if
only 4 inputs are available) and the menu reads:
GPI 0
GPI 0
to
OR
to
GPI
GPI 3
The assignment operates in the same way as
using the active front panel menu. That is, set the
ARC to recall the required display memory and
then assign the GPI to it.
By default GPI’s 0 to 7 recall user memories 1 to 8
respectively.
