31
COMMAND
NAME
DESCRIPTION
No.
COMMAND SYNT
A
X
Command
Argument 1
Argument 2
Argument 3
Argument 4
Response
Auto
Zero
Starts /reads the status of
the auto zero feature (Note:
The Z,N command can be
used only when absolutely
no flow thru the meter and
n
o
e
ar
lie
r
then 6 minutes after
power
up. It can take
several
minutes to complete. U
n
it
w
ill
not respond to other commands
when this is in progress.)
5
Z
N
(do it now)
ZN
W
(Write Zero to
EEPROM)
ZW (when done)
S
(status while auto
zero in progress)
ZNI,<value> while Z,N
is in progress.
V
(Display zero value)
ZV
,<zero value>
Flow
Alarms
Sets / reads the status of
the gas flow alarms.
Note:
High and Low limits
have to be entered in the
%F
.S. High alarm value
has to be more than Low
alarm value.
Alarm conditions:
Flow > High Limit = H
Flow < Low Limit = L
Low < Flow < High = N
6
A
H
(high flow limit)
<V
alue> (0-100%FS)
AH<V
alue>
L
(low flow limit)
<V
alue> (0-100%FS)
AL<V
alue>
A
(action delay in seconds)
<V
alue> (0-3600 sec.)
AA:<V
alue>
E
(enable alarm)
AE
D
(disable alarm)*
AD
R
(read current status)
N
(no alarm)
H
(high alarm)
L
(low alarm)
S
(Read current settings)
AS:M,L,H,D,B where:
M – mode (E/D)
L – Low settings (%FS)
H – High settings (%FS)
D – Action Delay (sec)
B – Latch mode (0-3)
B
Block (Latch) mode
<V
alue> (0-disabled*)
(1-enabl’d L)
(2-enabl’d H)
(3 –both L,H)
AB:<V
alue> where:
V
alue = 0 - 3
