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The service tool software must be installed on a Windows PC. The Caterpillar® communication adapter must be connected between the PC and the J1939 data link on which the target Annunciator is connected. (The service tool may be connected to the EMCP 3 Accessory Data Link service connector.) When connecting to the Annunciator, the user will first see the Module Summary screen shown in Figure 12. This screen shows module information such as Serial Number, Part Number, Software Group Number, and Software Release Date. The Module Description will also indicate which of the 3 possible Annunciators the service tool is connected with. In this example, the service tool is connected to “Alarm Module #2”. This number is called the “ECU Instance” and it is programmable. To program the Annunciator to a different ECU Instance, enter the Configuration Screen by selecting the Service Æ Configuration menu item, as shown in the figure.
Figure 12: Caterpillar® Service Tool Annunciator Summary screen
The service tool configuration screen, shown in Figure 13, identifies the serial number of the Annunciator that is connected. This is important in matching the desired ECU Instance to the actual hardware. In this example, the Annunciator will be programmed to ECU Instance #1. To do this, select the ECU Instance row, and double click on the current ECU Instance. A dialog box will open, allowing entry of the new ECU Instance. Type a numeric value, 1, 2, or 3 and click OK.
