GASMAX CX Operation & Maintenance Manual, Revision 1.0
Page 42
11
NETWORK
INTERFACE
MODBUS
REGISTERS
The
GASMAX
CX
features
a
full
complement
of
user
‐
accessible
MODBUS
registers
that
can
provide
a
complete
snapshot
of
the
gas
detector
configuration.
This
includes
all
real
‐
time
data,
preset
zero,
span
and
calibration
values
and
user
‐
programmable
text.
Variable
Name
Alias
Read
Write
Notes
Ch
1
Analog
Output
Raw
31001
4
N/A
12
bit
value;
800
=
4mA,
4000
=
20mA
Ch
2
Analog
Output
Raw
31002
4
N/A
12
bit
value;
800
=
4mA,
4000
=
20mA
Ch
1
A2D
Raw
Counts
31003
4
N/A
12
bit
value
from
A/D
converter
Ch
2
A2D
Raw
Counts
31004
4
N/A
12
bit
value
from
A/D
converter
Ch
1
Sensor
Life
31009
4
N/A
16
bit
signed
integer
ranging
from
‐
1
to
100
where
‐
1
indicates
Cal
Required
Ch
2
Sensor
Life
31010
4
N/A
16
bit
signed
integer
ranging
from
‐
1
to
100
where
‐
1
indicates
Cal
Required
Ch
1
Sensor
Temp
31011
4
N/A
16
bit
integer
from
1
to
4095
scaled
for
‐
55°C
to
+125°C
Ch
2
Sensor
Temp
31012
4
N/A
16
bit
integer
from
1
to
4095
scaled
for
‐
55°C
to
+125°C
Ch
1
4
‐
20mA
Out
FP
31210
4
N/A
32
bit
floating
point
Ch
2
4
‐
20mA
Out
FP
31212
4
N/A
32
bit
floating
point
Ch
1
Output
Feedback
FP
31214
4
N/A
32
bit
floating
point
Ch
2
Output
Feedback
FP
31216
4
N/A
32
bit
floating
point
12V
Input
FP
31218
4
N/A
32
bit
floating
point
Sensor
Volts
FP
31220
4
N/A
32
bit
floating
point
Bridge
Amp
FP
31222
4
N/A
32
bit
floating
point
Bridge
Out
FP
31224
4
N/A
32
bit
floating
point
Product
ID
32001
4
N/A
Factory
use
only
Version
32002
4
N/A
Factory
use
only
Custom
Feature
32003
4
N/A
Factory
use
only
Customer
ID
32004
4
N/A
Factory
use
only
Lock
Status
32005
4
N/A
Boot
Year
32006
4
N/A
Last
power
‐
up
time
&
date
Boot
Month
32007
4
N/A
Last
power
‐
up
time
&
date
Boot
Day
32008
4
N/A
Last
power
‐
up
time
&
date
Boot
Hour
32009
4
N/A
Last
power
‐
up
time
&
date
Boot
Minute
32010
4
N/A
Last
power
‐
up
time
&
date
Boot
Second
32011
4
N/A
Last
power
‐
up
time
&
date
SR
1
State
32020
4
N/A
True
if
relay
#1
active