Event Type In History Event History Message Possible Cause
INFO Run-Time Alarm Disable User initiated action
INFO Run-Time Alarm Disable Cancel User initiated action
INFO Run-Time Point Disable User initiated action
INFO Run-Time Point Disable Cancel User initiated action
INFO Start Monitor User or power restored
INFO Stop Monitor User or instrument fault
INFO User Requested Pump Switch User initiated action
INFO OPC Driver Started The DAq booted
INFO OPC Driver Shut Down User initiated action
INFO CPLD Programmed Successfully A new program has been loaded into the sensor board CPLD chip
INFO CPLD Program Failed An attempt to load a new program into the sensor board CPLD chip failed
INFO RFID Read Skipped User loaded new Chemcassette but skipped reading the RFID tag by pressing <next>
OPC No Ack Echo From Az n-n Communications problem to analyzer
OPC No Cmnd Socket Sent To Az n-n Communications problem to analyzer
OPC OPC To Az n-n Communication Broken Communications problem to analyzer
OUT OF ALARM Various Non-latching alarm level decreased because of decrease in gas concentration
PLC CONF INSTALL Various Download PLC Configuration was started
RESET ALM n Various Latching alarm level decreased because user pressed RESET CURRENT or RESET ALL
RESET ALM SIMULATE Various Analyzer acknowledges command to reset an artificial alarm OR fault
RESET INST FAULT Various Analyzer acknowledges command to reset an instrument fault
RESET MAINT FAULT Various Analyzer acknowledges command to reset a maintenance fault
USER RESET Various A user pressed RESET CURRENT or RESET ALL
INFO Flow Corrected Flow on one window of tape improper
7.5.1 LIT Related Informational Events
Event Type in History Event History Message Possible Cause
INFO Command - Perform LIT Char User pressed START LIT CHAR button
INFO LIT Characterization Performed Analyzer completed LIT characterization. If data field non-zero, this indicates the observed cracking pressure in inches Hg.
INFO Command - Unscheduled LIT User pressed START LIT TEST
INFO Line Integrity Test Performed Analyzer completed an integrity test. The data field contains the observed cracking pressure in inches Hg.
INFO Analyzer Lacks LIT Other analyzers in the rack performed a Line Integrity Test but this analyzer was purchased without the option.
Note: If additional or replacement Vertex M Analyzers are purchased without specifying the LIT option, no faults will be generated for the lack of the option in the new analyzer. However, an “INFO” message will be
logged in the Event History each time the LIT option is invoked. Existing analyzers configured for LIT will be unaffected.
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