| Codes for the Configuration Parameters | ||
|---|---|---|
| CDL Code | Code Description | Comments |
| 268-2 | Programmed Parameter Fault : Erratic, Intermittent, or Incorrect | The Electronic Control Module (ECM) detects that one or more of the programmable parameters have not been programmed.
The ECM may use a default torque map or the ECM may limit the engine to low idle. The code remains active while the parameter is unprogrammed. The code will never be logged. |
System configuration parameters are parameters that affect emissions, power of the engine, and other features that define the characteristics of the engine subsystems. The parameters are preprogrammed at the factory. You may need to reprogram the system configuration parameters if the ECM is replaced and/or if you reprogram the engine rating. You do not need to reprogram the system configuration parameters if you replace the flash file. Caterpillar Electronic Technician (ET) can be used to view the values for these parameters. Certain system configuration parameters are stamped on the engine information plate.
If a programmable parameter has not been programmed, the ECM will generate a 268-2 diagnostic code. The programmable parameter that is not programmed is also displayed on Cat ET.
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| Illustration 1 | g02780516 |
Illustration 1 shows the parameters that are not programmed, or may be programmed outside the acceptable range. The parameters that are not programmed, or programmed outside the acceptable range are listed below the 268-2 code. These parameters will be set to the factory default value. Certain aspects of the engines performance and engine monitoring may be affected.
If "Injector Trim" is displayed below a 268-2 diagnostic code on Caterpillar Electronic Technician (ET), refer to Troubleshooting, "Injector Trim File - Install".
"Equipment ID" allows the customer to enter a description into the ECM in order to identify the installation. A maximum of 17 characters may be entered in the field. This parameter is only for reference by the customer. This parameter is not required.
Program the "Engine Serial Number" to match the engine serial number that is stamped on the engine information plate.
Note: When you are requesting factory passwords, always use the engine serial number that is resident in the ECM.
The "ECM Serial Number" is stored in the memory of the ECM. The "ECM Serial Number" can be accessed by the use of the service tool.
This parameter identifies the part number of the flash file that is currently installed in the ECM.
This parameter identifies the release date of the flash file that is currently installed in the ECM.
This parameter identifies the description of the application for the flash file that is currently installed in the ECM.
The rating number corresponds to the selected set of performance maps that has been selected for this application. There may be more than one set of performance maps that are available for this engine. All of the maps are resident in the flash file for the engine.
This parameter defines the line frequency of the generator set.
The optimum speed of the engine under the rated load.
This parameter defines the output power of the generator set in kilowatts.
The kVA rating of the generator set.
This parameter identifies the performance maps that are in the software.
Engine Rating Application Type
This parameter defines the type of application that defined the configuration of the engine.
The engine acceleration rate defines the maximum rate of engine acceleration and deceleration.
| Minimum | Default | Maximum |
| N/A | N/A | 400 rpm/sec |
This parameter is set to configure the low idle rpm of the engine.
| Minimum | Default | Maximum |
| 100 rpm | 900 rpm | 1369 rpm |
This parameter defines the allowed reduction in engine speed when full load is applied to the engine.
| Minimum | Default | Maximum |
| 0 Percent | 3.0 Percent | 8.0 Percent |
This parameter enables the engine to be operated in an isochronous load sharing system or in stand-alone mode.
| Options | Default |
| Droop
Isochronous |
Isochronous |
 |
|
Accidental engine starting can cause injury or death to personnel working on the equipment. To avoid accidental engine starting, turn the battery disconnect switch to the OFF position. Remove the key for the battery disconnect switch. Use a secure padlock in order to lock the battery compartment access door. Place a Do Not Operate tag at the Start/Stop switch location to inform personnel that the equipment is being worked on. |
Note: Only allow qualified personnel to change the parameters that are for the engine state control.
Engine State Control Input Selection Method
This parameter identifies the type of control input selection that will be used by the ECM to identify the operating state of the engine.
| Options | Default |
| Configured Value
Last Active Source Switched Source |
Configured Value |
Engine State Control Input Configuration
This parameter identifies the type of external source that is used by the ECM in order to obtain command signals for the engine state control.
| Options | Default |
| CAN Input
Hardwired Input None |
CAN Input |
Engine State Control Secondary Input Configuration
This parameter identifies the type of secondary source that is used by the ECM in order to obtain command signals for the engine state control.
Note: This parameter is not normally used when the application is equipped with an EMCP 3.
| Options | Default |
| CAN Input (Global)
CAN Input #2 (Local) Hardwired Input None |
Hardwired Input |
Engine State Control Default Value
If a failure occurs on the current source selected for the operating state, this parameter is used to identify the operating state of the engine. This parameter will also be used if the engine ECM cannot determine the current operating state of the engine.
Note: If this parameter is set to "Run", the control system may start the engine unexpectedly. Only allow qualified personnel to change this parameter.
| Options | Default |
| Last Good Value
Run Stop |
Last Good Value |
Note: The "Run" setting is not recommended for use with the EMCP 3.
Engine State Control Hardwired Input Type Configuration
This parameter configures the type of input that is used for engine state control when the source is wired directly to the ECM. The "Energized to Switch State" refers to a momentary contact switch that is used for the start/stop control.
Note: This parameter is not normally used when the application is equipped with an EMCP 3.
| Options | Default |
| Energized to Run
Energized to Shutdown Energized to Switched State |
Energized to Run |
Remote Emergency Stop (E-Stop) Switch Input Type Configuration
This parameter defines the type of emergency stop switch that is installed on the application.
| Options | Default |
| Not Installed
Normally Open Normally Closed (to Ground) |
Normally Open |
Note: Use the Normally Open value for use with the EMCP 3.
This parameter defines the duration of engine operation at the cooldown speed. Programming this parameter to 0 will disable this function.
| Minimum | Default | Maximum |
| 0 Minutes | 3 Minutes | 223 Minutes |
Desired Speed Input Configuration
This parameter defines the type of input signal that is delivered to the ECM for speed control.
| Options | Default |
| CAN Input
PWM |
CAN Input |
Note: Configure this parameter to CAN Input for use with the EMCP 3.
Note: Use the PWM value for use with the load share module.
This parameter is set to configure the low idle rpm of the engine.
| Minimum | Default | Maximum |
| N/A | 1000 rpm | N/A |
Secondary Desired Speed Input Configuration
This parameter defines the type of input signal that is delivered to the ECM for the secondary speed control.
Note: This parameter is not normally used when the application is equipped with an EMCP 3.
| Options | Default |
| CAN Input
Not Installed PWM |
Not Installed |
Programming this parameter to "Disabled" will disable the function. Program this parameter to "Disabled" if the function is not being used or installed on this engine. Diagnostics will be suspended for the pre-lube system.
| Options | Default |
| Disabled
Enabled |
Enabled |
Engine Pre-Lube System Configuration
This parameter allows the engine to be set for the continuous prelubrication. If the parameter is set to "Continuous", the pump keeps the engine prelubed continuously while the engine is not running. The engine is continuously ready for an immediate start. If the continuous prelubrication is used, the engine must be equipped with an appropriate prelubrication pump and other components. These components will prevent flooding the engine with engine oil.
Note: Setting this parameter to "Continuous" requires the use of a prelubrication pump and other components that are appropriate for this task. If the engine is improperly equipped, the engine could be flooded with engine oil and engine components may be damaged during engine starting.
| Options | Default |
| Automatic
Continuous |
Automatic |
Engine Pre-Lube Time Out Period
This parameter defines the duration of operation of the prelubrication pump prior to the detection of oil pressure in the lubrication system. If the timer expires and pressure is not present in the lubrication system, the prelubrication pump will be shut down. The attempt to start the engine will be aborted.
| Minimum | Default | Maximum |
| 1 Second | 120 Seconds | 1800 Seconds |
Engine Ready to Start Pre-Lube Duration
This parameter configures the actual duration of operation for the prelubrication pump during the "Ready To Start" state of the prelubrication function. This state is entered when enough oil has been pumped into the engine in order to allow engine cranking to begin. If the engine is not immediately cranked, the prelubrication pump will continue to run in order for the engine to remain ready for starting.
| Minimum | Default | Maximum |
| 1 Second | 100 Seconds | 1800 Seconds |
Engine Continuous Pre-Lube Duration
This parameter configures the actual duration for the activation of the prelubrication pump while the pump is operating in the state of continuous prelubrication. The "Engine Prelube System Configuration" parameter must be configured to "Continuous" in order for this parameter to be initiated.
| Minimum | Default | Maximum |
| 2 Minutes | 2 Minutes | 4 Minutes |
Engine Continuous Pre-Lube Interval
This parameter is used to configure the rest time for the prelubrication pump when the pump is operating in the state of continuous prelubrication. During this rest time, the prelubrication pump is not running. The "Engine Prelube System Configuration" must be configured to "Continuous" in order for this parameter to be initiated.
| Minimum | Default | Maximum |
| 1440 Minutes | 1440 Minutes | 20160 Minutes |
Starting System Selection Mode
This parameter defines the method for engine starting that will be used for the application. Programming the parameter to "Manual" indicates that an external system will be used as input to start the engine. Programming the parameter to "Automatic" indicates that the internal system will be used to start the engine.
| Options | Default |
| Manual
Automatic |
Automatic |
Starter Pinion Engagement Detection System Enable Status
This parameter is used to set the status of the detection system that is for engagement of the starter pinion. This system is used in order to prevent damage to the components of the starting system if the starter pinion does not engage the flywheel.
| Options | Default |
| Disabled
Enabled |
Enabled |
Starting System #1 Assignment (Left Side)
This parameter defines the configuration of this starting system as the primary starting system or the secondary starting system.
| Options | Default |
| Primary
Secondary |
Primary |
Starting System #1 Maximum Number of Crank Cycles
This parameter defines the total number of crank cycles that are performed by the primary starting system during an attempt to start the engine. An overcrank fault is logged for Starting System #1 if the engine does not start.
| Minimum | Default | Maximum |
| 0 | 3 | 20 |
Starting System #1 Crank Duration
This parameter defines the maximum amount of time for an attempt to start the engine. The engine will activate the starting motors for no longer than the duration that is defined in this parameter during a single attempt.
| Minimum | Default | Maximum |
| 1 Second | 10 Seconds | 30 Seconds |
This parameter determines the engine rpm that the starting motors will be disengaged.
| Minimum | Default | Maximum |
| 100 rpm | 400 rpm | 500 rpm |
Emergency Shutdown Override Switch Installation Status
This parameter defines the installation status of the emergency shutdown override switch. This parameter is protected by factory passwords.
| Options | Default |
| Installed
Not Installed |
Not Installed |
Emergency Shutdown Override Input Configuration
This parameter defines the input configuration of the signal source that is for the emergency shutdown override.
| Options | Default |
| CAN Input
Switch to Ground |
Switch to Ground |
This parameter is programmed to "Disabled" when the engine is shipped from the factory. The parameter is not available for this application.
| Options | Default |
| Disabled
Enabled |
Enabled |
Desired Speed Input Configuration
This parameter defines the type of input signal that is delivered to the ECM for speed control.
| Options | Default |
| CAN Input
PWM |
CAN Input |
Note: Configure this parameter to CAN Input for use with the EMCP 4.
Note: Use the PWM value for use with the load share module.
Secondary Desired Speed Input Configuration
This parameter defines the type of input signal that is delivered to the ECM for the secondary speed control.
Note: This parameter is not normally used when the application is equipped with an EMCP 3.
| Options | Default |
| CAN Input
Not Installed PWM |
Not Installed |
This feature is not available for this application.
Governor (Proportional)Gain Percentage
This parameter is used in determining the rate of response to an engine load.
| Minimum | Default | Maximum |
| 1 | 100 | 1000 |
Governor (Integral)) Stability Percentage
This parameter is used by the ECM to offset the steady state speed error when the steady state speed error is less than 20 rpm.
| Minimum | Default | Maximum |
| 1 | 100 | 1000 |
Governor Transient Loop Gain Percentage
This parameter is used by the ECM to offset the steady state speed error when the steady state speed error is greater than 20 rpm.
| Minimum | Default | Maximum |
| 1 | 100 | 1000 |
Desired Engine Coolant Temperature Configuration
This parameter is used to program setting for coolant temperature that will be used by the TCM for the engine.
| Minimum | Default | Maximum |
| 40 | 85 | 102 |
Exhaust Temperature Module Installation Status
This parameter defines the installation status of the exhaust temperature module.
| Options | Default |
| Installed
Not Installed |
Not Installed |
FLS represents the adjustment to the fuel system that was made at the factory in order to fine-tune the fuel system. The correct value for this parameter is stamped on the engine information plate. Only change this value if the engine is rerated or if a new ECM has been installed. Factory passwords are required to change this parameter.
| Minimum | Default | Maximum |
| −128 | 0 | 127 |
FTS is like FLS. Only change this value if the engine is rerated or if a new ECM has been installed. Factory passwords are required to change this parameter.
| Minimum | Default | Maximum |
| −128 | 0 | 127 |
The total tattletale counts the number of changes that are made to the system parameters.
CAN Communication Protocol Write Security
The CAN Communication Protocol Write Security parameter control the security required for writing information through the CAN bus.
| Value | Default |
|---|---|
| Seed and Key
No Security |
Seed and Key |
CAN Communication Protocol Read Security
The CAN Communication Protocol Read Security parameter control the security required for reading information from the CAN bus.
| Value | Default |
|---|---|
| Seed and Key
No Security |
Seed and Key |