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| Illustration 1 | g00296905 |
Caterpillar Monitoring System Display Components (1) Quad gauge module. (2) Speedometer/tachometer module. (3) Main display module. (4) Alert indicators. (5) Gauges. (6) Tachometer. (7) Ground speed readout. (8) Transmission gear readout. (9) Display area. | |
Normal mode is used during normal machine operation. When you are in normal mode, the Caterpillar Monitoring System performs the following operations.
- A monitoring system that is operating properly will perform a self test whenever the key switch is turned to the ON position. The outputs also operate for a brief instant. See Testing and Adjusting, "System Self Test ".
- The main display module continuously watches machine systems. If the gauges are available, the gauges in the quad gauge module show a value in a normal range. Ground speed readout (7) is shown as a numeric value and the transmission gear readout (8) on the module shows numeric values. The value for a condition may also be shown in the display area.
- The main display can show a problem with the machine. The main display module continuously monitors machine systems. When an abnormal condition (problem) exists, the corresponding alert indicator (4) FLASHES. As the severity of the problem increases, the action lamp FLASHES and the action alarm SOUNDS. See System Operation, "Warning Operation".
Note: The main display module may notify the operator when an active diagnostic code exists in other electronic systems. This is done in different ways. The following example is of a diagnostic code that occurs in the engine electronic system. The service code indicator will show "SERV CODE" and the alert indicator for "power train system" FLASHES. See the Operation And Maintenance Manual for the machine that is being serviced for more specific information on the machine.
| Operator Modes Tractor Monitoring System | |||||
|---|---|---|---|---|---|
| Modes | 621G | 623G | 627G | 631G | 637G |
| 1 | Service Meter | Service Meter | Scraper Digital Tachometer | Service Meter | Scraper Digital Tachometer |
| 2 | Odometer | Odometer | Service Meter | Odometer | Service Meter |
| 3 | Digital Tachometer | Digital Tachometer | Odometer | Digital Tachometer | Odometer |
| 4 | Scrolling | Scrolling | Digital Tachometer | Scrolling | Digital Tachometer |
| 5 | Numeric Readout | Numeric Readout | Scrolling | Numeric Readout | Scrolling |
| 6 | Tractor Engine Parameter Display | Tractor Engine Parameter Display | Numeric Readout | Tractor Engine Parameter Display | Numeric Readout |
| 7 | Tractor Transmission Parameter Display | Tractor Transmission Parameter Display | Tractor Engine Parameter Display | Tractor Transmission Parameter Display | Tractor Engine Parameter Display |
| 8 | Machine Control Parameter Display | Machine Control Parameter Display | Tractor Transmission Parameter Display | Machine Control Parameter Display | Tractor Transmission Parameter Display |
| 9 | Machine Control Parameter Display | Machine Control Parameter Display | |||
| 10 | Scraper Monitor Parameter Display | Scraper Monitor Parameter Display | |||
| Operator Modes Scraper Monitoring System | |
| Modes | 627G & 637G |
| 1 | Service Meter |
| 2 | Digital Tachometer |
| 3 | Engine Coolant Temperature |
| 4 | Engine Oil Pressure Switch Status |
| 5 | Torque Converter Oil Temperature |
| 6 | Scrolling |
| 7 | |
| 8 | |
| 9 | |
| 10 | |
Note: For machines with a tractor Caterpillar Monitoring System and a scraper Caterpillar Monitoring System, tractor operator modes are only available on the tractor Caterpillar Monitoring System. Scraper Caterpillar Monitoring System modes are only available on the scraper Caterpillar Monitoring System.
The six digit display area (9) is used to show various conditions of the machine system to the operator (Operator Modes). Operator modes that are available to the operator are dependent on the machine options installed.The table above lists the operator modes by the machine.
The default condition is shown on the six digit display area when the main display module enters normal mode. This condition is normally the service meter on machines without a rear engine. See System Operation, "Service Meter Mode" for more information. For machines with a rear engine, see System Operation, "Tachometer Mode" for more information.
The six digit display area scrolls through the available operator modes when the operator switch input is grounded. Opening the switch input will stop the scrolling on the currently shown mode.
See the topic with the corresponding name on the following pages for a more detailed explanation of each mode.