How to Connecting Caterpillar ET Software to the ECM

Caterpillar ET Software

The Communications tab in the "Preferences" dialog box allows the communication interface device and the ports necessary to run the service tool to be set. NOTE: The information in the "Communications" tab is dependent upon the "Communication Interface Device" selected.

To set the communication preferences:
1). Open Caterpillar ET Software, it will automatically connect to the ECM.
2). Click Stop Connect.
Figure 1.1 - Initializing Communications...

3). Select on Menu: "Utilities - Preferences - Modify...".
Figure 1.2 - Modify...

If using Caterpillar Comm Adapter 3, and mark on Enable Dual Data Link Service.
NOTE: If the "Enable Dual Data Link Service" checkbox is selected, two ECMS using two different data links may be serviced simultaneously without switching the data link connection. When applicable, this checkbox is selected by default.
  • The J1939 data link speed may support values of "250K", "500K" and "Auto". The selected value must match the product being serviced.
Figure 1.3 - Caterpillar Comm Adapter 3 (RP1210)

If using Caterpillar Comm Adapter II, and setting Ports (example: COM1) as your COM port at Device Manager
Figure 1.4 - Caterpillar Comm Adapter II (RP1210)

If using NEXIQ USB-Link, select RP1210 Compliant Device, also select Advanced... button to select a specific RP1210/ USB-Link (1) - NEXIQ Technologies USB-Link.
Figure 1.5 - USB-Link (1)
  • Select another "Communication Adapter" and "RP1210 Compliant devices".
Figure 1.6 - RP1210 Communication Adapter Device
    Figure 1.7 - Communication Adapter

#Driver Download:

  • When a data link is established, the service tool returns to the main menu and displays the ECM Summary screen.
Figure 1.8 - ECM Summary
  • When a data link connection is not established, the service tool provides information for correcting the problem.
Figure 1.9 - Error #142
  • Click Help for open the Troubleshooting Guide.
Figure 2.1 - Troubleshooting Guide

#Setting the Default Settings (Preferences)
The Default Settings feature allows the user to configure the service tool to display a desired feature at startup. By default, the service tool displays the ECM Summary screen at startup. Additionally, this feature allows the user to configure whether histogram data will be displayed as raw data or as a percentage.

To set the default startup tool:
1). Select the Default Settings Tool tab from the Preferences dialog box.
2). Select the desired feature from the Startup Tool drop down menu and click OK. The following can be set to display at startup:
  • ECM Summary
  • Status
  • Configuration
  • Active Diagnostic Codes
  • Logged Diagnostic Codes
  • Active Event Codes
  • Logged Event Codes
Figure 2.2 - Startup (Default Setting)
Figure 2.3 - Startup Display

NOTE: If the selected feature is not supported by the ECM, the ECM Summary feature will be displayed at startup.


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1 Response to "How to Connecting Caterpillar ET Software to the ECM"

  1. Why rly 2 on our emcp4.2 is not energise during start up.This causes us problem of not having good start....any help will be appreciated.Our unit is cat.3412 with emcp 4.2 and peec.Thabk you