
GASMAX CX Operation & Maintenance Manual, Revision 1.0
Page 22
5
SETUP
AND
OPERATION
GASMAX
CONTROLS
AND
DISPLAY
There
are
four
magnetic
switches
on
the
face
of
the
GASMAX
CX,
arranged
in
a
quadrant
around
the
LCD
display.
Starting
in
the
upper
left
and
proceeding
clockwise
these
are
labeled
UP,
NEXT,
EDIT
and
DN/CAL.
To
activate,
or
“press”
a
magnetic
switch,
swipe
the
magnet
near
the
switch.
For
the
balance
of
this
manual,
the
term
“press”
will
be
used
to
describe
activation
of
any
key
via
the
magnetic
wand.
Below
the
LCD
display,
two
LEDs
monitor
the
MODBUS
RS
‐
485
or
Ethernet
network
interface.
Flashing
indicates
sent
or
received
data.
The
EDIT
key
activates
the
USER
MENU
mode
(See
Chapter
8).
During
USER
MENU
mode,
the
UP,
DN
and
NEXT
keys
are
used
to
select
and
confirm
menu
entries.
The
USER
MENU
allows
the
operator
to
view
the
Event
Log
and
channel
parameters
and
change
system
settings
such
as
alarm
levels
and
real
time
clock
day
and
date.
Pressing
the
DOWN/CAL
key,
followed
by
the
EDIT
key,
initiates
calibration
mode.
For
a
detailed
description
of
calibration,
see
Chapter
6.
When
not
viewing
any
of
the
user
menus,
pressing
the
NEXT
key
momentarily
causes
the
GASMAX
CX
display
to
sequence
between
DUAL
CHANNEL
DATA
DISPLAY,
CHANNEL
1
TREND
DISPLAY,
CHANNEL
2
TREND
DISPLAY,
CHANNEL
1
DATA
DISPLAY
and
CHANNEL
2
DATA
DISPLAY
as
shown
below.
If
only
one
channel
is
enabled,
the
dual
channel
display
mode
and
corresponding
data
and
trend
screens
are
not
included
in
the
rotation.
Figure 5-1: GASMAX CX Display Screen Sequence