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Figure 14: Caterpillar® Service Tool Annunciator LED Configuration Screen
Each LED pair has four parameters required to configure it. It is best to configure the four columns in order from left to right; first Trigger Condition, next Severity Level, then Suspect Parameter Number, and finally Failure Mode Identifier (if required). The reason for the order is because the value set in one column affects the choices available in the subsequent columns. If a field is grayed out, it is not available due to conditions set in previous columns. Trigger Condition: There are three possible selections for Trigger Condition; Specific Event, General Event, and Disabled. Specific Event is used to assign an LED pair to a specific data link parameter, such as Oil Pressure, Engine Speed, Coolant Temperature, etc. “General Event” is used to assign an LED pair as a general alarm or shutdown indicator. When configured as General Event, the LED will not be assigned to a particular parameter. It will respond to any event, regardless of the Suspect Parameter Number. For this reason, when General Event is selected, the Suspect Parameter Number cannot be changed. Disabled is used to disable the LED pair. The remaining three parameters will be grayed out when Disabled is selected. Severity Level: Severity Level defines how the LED pair will react to various levels of event conditions. Selections that begin with “Condition Exists” will respond to J1939 Event messages for FMI 31 “Condition Present”. For example, LED pair #2 is
