31
COMMAND
NAME
DESCRIPTION
No.
COMMAND SYNTAX
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
no earlier then 6 minutes after
power up. It can take several
minutes to complete. Unit will
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) <Value> (0-100%FS)
AH<Value>
L (low flow limit)
<Value> (0-100%FS) AL<Value>
A (action delay in seconds) <Value> (0-3600 sec.)
AA:<Value>
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 <Value> (0-disabled*)
(1-enabl’d L)
(2-enabl’d H)
(3 –both L,H)
AB:<Value> where:
Value = 0 - 3
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