65
6..4
4..115
5..2 D
Diia
ag
gn
no
os
sttiic
c E
Ev
ve
en
ntts
s R
Re
eg
giis
stte
err
Thhee ffoolllloow
wiinng aallaarrm eevveennttss aarre ssuuppppoorrtteedd::
TABLE XX: DIAGNOSTIC EVENTS REGISTER
EVENT NUMBER
DIAGNOSTIC EVENTS DESCRIPTION
OLED BIT
CODE
1
CPU Temperature Too High
0
2
DP Sensor Initialization Error
1
3
AP Sensor Initialization Error
2
4
2.5 Vdc Reference Out of Range
3
5
Flow Out of Permissible Range
4
6
Absolute Pressure over Permissible Range
5
7
Gas Temperature Out of Range
6
8
Analog Output Alarm Flag
7
9
UART Serial Communication Error
8
10
Modbus Serial Communication Error
9
11
EEPROM R/W Error
A
12
Auto Zero Failure Flag
B
13
AP Tare Failure Flag
C
14
DP ADC Counts Invalid
D
15
AP ADC Counts Invalid
E
16
Fatal Error
F
There are actually three separate registers:
x
The Status Diagnostic Event Register, which holds each active alarm event (this is
read only)
x
The Mask Diagnostic Event Register, which allows the user to Enable or Disable
monitoring for a particular event
x
The Latch Diagnostic Event Register, which allows the user to Enable or Disable the
latch feature for a particular event
aa)) SSttaattuuss D
Diiaaggnnoossttiicc EEvveennt R
Reeggiisstteerr ((R
Reeaad O
Onnllyy)
Each active Diagnostic Event will be indicated on the OLED screen. In
addition, the total number of currently active events will be displayed on
the first line. A typical display with no active Diagnostic Events is shown
in
Figure 39
:
