Landfill Compactors, Soil Compactors, Wheel Dozers, and Wheel Loaders VIMSTM 3G Caterpillar


Electronic Control Module

Usage:

826K 232

Machine Data That is Stored in the VIMSTM Electronic Control Modules

The VIMSTM electronic control modules (ECMs) store the following machine data:

  • Product identification number (PIN) or serial number

  • Machine equipment or unit number

  • Machine hours (SMH)

  • Odometer

  • Date

  • Time

  • All data files that can be downloaded

  • Setting of the display unit

  • Setting of the desired language

  • Active events

See Table 1 for the status of machine information after new onboard software has been flashed into the onboard memory.

Note: The active events are stored in memory when the keyswitch is turned off.

Table 1
Machine Information That is Changed By The Installation Of New VIMSTM Onboard Software 
Machine Information  Changed By Installation of New Onboard Software(1) 
Serial Number of the Machine (Product Identification Number)  NO 
Equipment Number of the Machine (Unit Number)  NO 
Machine Hours (SMH)  NO 
Odometer  NO 
Date  NO 
Time  NO 
Configuration Type  YES(2) 
The Data Files That Are Available For Download   YES 
Event Data  YES 
Data Logger  YES 
Changes to the configuration that were made with the Service Program Codes.   YES 
Payload Data  YES 
Language Setting  YES 
Unit Setting  YES 
Active Event At The Time The Key Switch is Turned Off  YES 
(1) The VIMSTM onboard software (flash file) contains the source software and the configuration software. The Cat® Electronic Technician (Cat ET) must be used to flash this software.
(2) Installation of the new configuration software or the same configuration software clears the configuration type.

The VIMS ECMs continuously monitor the status of the machine systems. The VIMS ECMs decisions are based upon the input from the following components:

  • Other electronic control modules

  • Internal calculations

The VIMS ECMs send information to other ECMs on the machine. The input and output of this information takes place over the Cat® data-link. The outputs of the VIMS ECMs notify the operator and service technician of the status of the machine systems. The machine system information that is provided by the VIMS is shown on the Advisor. The VIMS ECM provides the output for the service indicator lamp.

The service indicator lamp is used by the service technician and the on-site maintenance personnel. The service indicator lamp is not visible from the cab. The VIMS ECMs use the two outputs of the RS-232 data-link to communicate the onboard data to the off-board systems. The VIMS ECMs have two 70-pin connectors. The connectors are used to connect the necessary harness wiring to all the system components. The module identifier (MID) for the VIMS ECMs are:

MID 161 - VIMS Main ECM

Input/Output

CatData-Link

The Cat data-link provides a communication link with the other ECMs on the machine. The Cat data- link is bidirectional. The bidirectional functionality allows the input/output of data between ECMs. The Cat data-link permits the sharing of information such as engine oil pressure, machine codes, and diagnostics.

CAN Data-Link

The CAN data-link provides a communication link with CANIP radios. The CAN data link is bidirectional. The bidirectional functionality allows the input/output of data between the VIMS ECM and CANIP radios. The CAN data link permits the sharing of information.

RS-232 Data-Link

The VIMS ECM has two RS-232 serial ports. The two serial ports allow the VIMS ECMs to communicate with the off-board systems. The RS-232 data links are bidirectional. The bidirectional function allows the VIMS ECMs to input information and output information. One port is used to communicate with an off-board service tool. The second port is used to broadcast data to off-board systems, as required.

Inputs

Sensing Input (System Voltage)

The sensing input for system voltage tells the VIMS ECMs the voltage of the machine electrical system. Harness wiring connects the "VIMS" circuit breaker to this input. The voltage helps determine the condition of the electrical system. This input is also the +battery supply for the VIMS ECMs.

Outputs

Service Indicator Lamp - The service lamp indicator is a blue colored lamp on the exterior of the machine. This lamp alerts people in the work area that the machine has a problem.

To tell if your machine has a service lamp indicator, look for:

  • The service lamp indicator on the machine

  • The service lamp indicator in the Cat® ET General Information Tab screen


Illustration 1g03615419
Cat ET General Information Tab screen

Reference: Special Instruction, REHS5539, "VIMS Application Guide"

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