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Figure 11 Error list
Status alarm codes
Table 7 gives the hexadecimal codes shown on the ROC instrument display. The error message and
the decimal equivalent of the error code are shown (as part of the record) on the main screen. The
information is shown when the mouse moves over Status: Error. On the diagnostic screen, it shows
both the hexadecimal and decimal codes along with information about the code. There is a red flag
next to each error that makes up the code.
Note: Combination alarms can occur and make other hexadecimal codes (e.g., a displayed hexadecimal code
value of 140 shows the concentration is low and 4 µm code alarms).
Table 7 Alarm codes
Hexadecimal code Description
000 There are no alarm conditions.
001 The laser current is low.
002 The laser current is high.
004 The photodiode power is low.
008 The photodiode power is high.
010 The temperature is low.
020 The temperature is high.
040 The concentration is low.
080 The concentration is high.
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