Model IR4000M
19
Table 9 Bitmap for IR4000 Status Error
Bit Position
3 2 1 0
Error
Low Line
Gas Left Fault
NVM Fault
Misc. Fault
Bit Value
8 hex / 8 dec
4 hex / 4 dec
2 hex / 2 dec
1 hex / 1 dec
Bit Position
7 6 5 4
Error
Detector Non-
critical Fault
Detector Critical
Fault
Fail to Complete
Setup
Wire Shortage
Bit Value
80 hex / 128 dec
40 hex / 64 dec
20 hex / 32 dec
10 hex / 16 dec
Bit Position
11 10 9 8
Error
Comm. Error with
Detector 4
Comm. Error with
Detector 3
Comm. Error with
Detector 2
Comm. Error with
Detector 1
Bit Value
800 hex / 2048 dec
400 hex / 1024 dec
200 hex / 512 dec
100 hex / 256 dec
Bit Position
15 14 13 12
Error
Comm. Error with
Detector 8
Comm. Error with
Detector 7
Comm. Error with
Detector 6
Comm. Error with
Detector 5
Bit Value
8000 hex / 32768 dec 4000 hex / 16384 dec
2000 hex / 8192 dec 1000 hex / 4096 dec
1.4.4 Model Type (0004h, Read-Only)
A Read returns the model type for the base.
1.4.5 Software Revision (0005h, Read-Only)
A read returns the software revision of the IR4000, which is two ASCII
characters.
1.4.6 Display LED Digits Two and Three (0006, Read-Only)
A Read returns the two rightmost ASCII character that would appear on the
IR4000 front panel. Bits 8-15 hold the contents of the second ASCII character,
and bits 0-7 hold the contents of the third ASCII character.
1.4.7 Display LED Digit One and Alarm/Warning LEDs
(0007, Read-Only)
A Read returns the leftmost ASCII-coded digit from the IR4000 front panel, along
with the status of the Alarm and Warning LEDs, as shown in the following table.
Bits 8-15 hold the contents of the first ASCII digit, which is often the IR400 unit
number. Bits 0-7 indicate the state of the Alarm and Warning LEDS, as follows:
•
Bit 4 is set if the Alarm LED is ON
•
Bit 3 is set if the Warning LED is ON