4.1.5 LOI Status Codes
The LOI display shows a status code in the lower right hand corner of the display. There are nine status codes to
indicate the existing status of the device during operation. The status code descriptions are shown in Table 4-1.
Table 4-1. LOI Status Codes
AL Alarm - The device is in a recoverable alarm state.
BL Blowback - A blowback cycle is active.
CA Calibration - A calibration cycle is active.
CV Calibration Verify - A calibration verify task is in progress.
NM Normal - The device is in a normal operating mode.
PO
Power On - A system level initialization sequence is active. This will continue for
several seconds.
SF
System Fault - The device is in a non-recoverable alarm condition. The unit
must be reset or power must be cycled off and on to resume operation.
ST
Stabilize - The device heater control is stabilizing (after warm up). Sensors are
warming up to operating temperature.
WU Warm Up - The device heaters are ramping up to operating temperature.
CZ COe Zero - The COe Zero cycle is active.
4.2 LOI Menu Tree
This section consists of a menu tree for the LOI on the Hazardous Area OCX 8800, Figure 4-5. This menu is specific
to the Hazardous Area OCX 8800.
4.2.1 First Column Submenus
From the operating display (O
2
% and COe ppm), the left-pointing Enter key is the only option to move into the first
column submenus of the LOI menu tree. The first column contains three submenus: SENSOR DATA, Figure 4-5
sheet 1 of 4, CALIBRATION, sheet 2 of 4, and SYSTEM, sheets 3 and 4 of 4. From the operating display, SENSOR
DATA is displayed when the right-pointing key is selected. Use the up or down-pointing key to move to the other
first column submenus.
4.2.2 Second Column Submenus
From the first column submenus, selecting the right-pointing key moves the display into the second column
submenus. The up and down-pointing keys allow the display to move to the second column submenus of the first
column submenu selected. The left-pointing key moves the display back to the first column submenu.
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