EMCP3 Caterpillar

[ OPTIONAL USE]

The annunciator module is not required.

General Information

The EMCP 3 annunciator module is used in order to indicate various system events and status conditions. The annunciator module uses indicator lights and an audible horn in order to provide the operator with information about the status of the system. The annunciator module can be used in order to announce faults and status signals to the operator. The annunciator module also allows the operator to silence the horn or to acknowledge the system faults.

There are 17 pairs of LED indicators on the annunciators front panel. Sixteen of these indicator pairs are used in order to announce events, diagnostics, and status signals. The LED indicators (25) is used as a combined network and module status LED. The purpose of status lights is to alert the operator of problems with the J1939 data link connection.

Table 1 lists the color scheme associated with the data link connections status LED.

Illustration 1	g01509455

Basic Operation

Each pair of LED indicators on the annunciator consists of two of the following three colors: green, amber and red. The color choices allow for custom configuration of Status, Warning and Shutdown indicators. For example, a pair of red and amber LED indicators may be configured for engine oil pressure. If a low engine oil pressure warning is read over the data link, the annunciator will flash the amber LED and the audible horn will sound. If the low engine oil pressure shutdown is read over the data link, the annunciator will flash the "Red" LED and the audible horn will sound.

In order to acknowledge the shutdown and alarm conditions or to silence the horn, press the alarm acknowledge button.

In order to test the LED indicators, or in order to test the horn, press the lamp test button and hold the lamp test button.

Table 2 lists the available color combinations for the 17 pairs of lights that are on the annunciator.

Configuration

The annunciator is field programmable with the use the CST. The annunciator is also flash programmable in order to update the software with the use of CST. The service tool software must be installed on a Windows based PC. The Caterpillar communication adapter must be connected between the PC and the J1939 data link that the target annunciator is connected to. When the PC is connecting to the annunciator, the user will first see the "Module Summary" screen. Refer to Illustration 2.

Note: The service tool can be connected to the EMCP 3 accessory data link service connector.

Illustration 2 shows the module information such as serial number, part number, software group number, and software release date.

Illustration 2	g01510103

The annunciator module can be customized in order to signal many different system-related conditions. The supported data link parameters are shown in Table 3 in the form of suspect parameter numbers.

Global Acknowledge

The annunciator can be configured to initiate an event acknowledge message and to respond to an event acknowledge message over the J1939 data link. If the "Global Acknowledge" set point is enabled, then the annunciator events may be acknowledged directly on the annunciator. The annunciator events may be acknowledged by pressing the:

• "Alarm Acknowledge" button

• "Alarm Acknowledge" button on the EMCP 3 (The use of the button on the EMCP 3 is considered to be a "Remote" acknowledgment.)

• "Acknowledge" button on another annunciator that is on the same data link. (The use of the button on another annunciator is considered to be a "Remote" acknowledgment.)

Note: Acknowledging the events also silences the horn.

The default setting for this set point is "DISABLED". The default setting can be enabled by the use of the "Service" dialog. The user will need to navigate to the "Configuration" dialog in order to change the set point to "Enabled".

Electronic Control Unit (ECU) Instance Number

The module description possesses the capability to indicate a number that identifies the annunciator uniquely from any other annunciator modules that are on the primary or accessory J1939 data link. In the example that is shown in Illustration 3, the service tool is connected to "Alarm Module 2".

The unique number that identifies the annunciator is called the "Electronic Control Unit (ECU) Instance". The "ECU Instance" is programmable. Use the following steps in order to program the annunciator to a different ECU instance number:

1. Navigate to the "Service" dialog.

2. Click on "Configuration".

Illustration 3	g01510429

The Cat ET configuration screen shows the desired ECU instance. The Cat ET dialog also shows the actual hardware, "Alarm Module 2", that is related to the specific ECU instance. In Illustration 3, the annunciator will be programmed to ECU instance 1. Perform the following steps in order to program the desired instance.

1. Select the desired ECU instance row.

2. Double click on the current ECU instance. A dialog box will open that allows entry of the new ECU instance.

3. Type a numeric value such as 1, 2, 3, or 4. Click "OK".

When the "OK" button is clicked, the service tool software will automatically restart and will automatically reconnect to the data link. After the service tool software has connected once again, the summary screen will now show the new module name, based on the ECU instance.

Configuring the Annunciator LED Behavior

Each LED pair has four parameters that are required in order to configure each LED pair. The best practice is to configure the four columns in order from left to right as follows:

1. First configure the "Trigger Condition".

2. Configure the "Severity Level".

3. Configure the "Suspect Parameter Number".

4. Finally, configure the "Failure Mode Identifier", if required.

The reason for the order is because the value that is set in one column does affect the choices that are available in the subsequent columns. If a field is grayed out, that particular field is not available due to conditions set in the previous columns.

Perform the following steps in order to configure the behavior of the LED pairs.

1. Select "Service" in order to enter the "LED Pair Configuration" dialog.

2. Select "LED Pair Configuration".

Refer to Illustration 4.

Illustration 4	g01510553

Trigger Condition

There are three possible selections for the "Trigger Condition". The selections are "Specific Event", "General Event", and "Disabled".

Disabled - Disabling the trigger condition disables the LED pair. If trigger condition is disabled, then the LED pair will not respond to any data link message.

General Event - "General Event" is used in order to assign an LED pair as a general alarm or shutdown indicator. If the LED pair is configured as "General Event", then the LED will not be assigned to a particular parameter. The LED will respond to any event with a severity level that is chosen in the "Severity Level" column, regardless of the SPN.

Specific Event - "Specific Event" is used in order to assign an LED pair to a specific data link parameter, such as oil pressure, engine speed, and coolant temperature. The desired parameter must be chosen in the SPN column.

Severity Level Trigger

The severity level defines which types of events that the LED pair will react to. Selections that begin with "Condition Exists" will respond to J1939 event messages for "FMI 31 Condition Exists".

For example, LED pair 2 is configured for "Condition Exists", "Red On", "Other Not Used", and "Horn On with SPN 190 (Emergency Stop Active)". The "Condition Exists" selection means that when the annunciator receives a message indicating "Emergency Stop with FMI 31", the red LED will turn on and the horn will also turn on. "Other Not Used" indicates that the other LED color in the pair is never used. "Green Off", for example, indicates that the green LED will illuminate when the condition chosen for this LED pair is NOT active.

Most severity level selections imply one or more J1939 FMI codes:

• Condition that exists is equivalent to FMI 31

• High warning can be FMI 15 or FMI 16

• Low warning can be FMI 17 or FMI 18

• High shutdown is equivalent to FMI 0

• Low shutdown is equivalent to FMI 1

• High or low shutdown is equivalent to FMI 0 or FMI 1

Since the FMI codes are implied by this column, the FMI column is grayed out for any of these selections. Only the "Specific" option will allow an FMI to be configured.

Suspect Parameter Number

The SPN column is used in order to select or to type in the SPN for the parameter that is assigned to the LED pair. Most supported suspect parameter numbers can be selected from the list. Refer to the "SAE J1939" literature or Systems Operation Testing and Adjusting Manual, RENR7902 for a complete list of supported SPNs.

Note: Remember to click the "Submit" button that is at the bottom of the LED "Pair Configuration" tool. The "Submit" button must be used after the selections for each LED pair has been made. Only after the "Submit" button has been pressed, will the new settings take effect. If selections are made and an attempt is made to leave the LED "Pair Configuration" tool before the "Submit" button has been pressed, then a prompt will ask if the user wishes to have the changes take effect. If the user declines, then the changes will be lost.

Failure Mode Identifier (FMI)

Choose the FMI from Table 4.

Adding Additional Remote Annunciator

An additional remote annunciator may be added if desired. In order to operate properly, the annunciator must be located within 244 m (800) of the EMCP 3 and the end of line terminating resistor must be relocated. Refer to Illustration 5.

Illustration 5	g02570820
Adding additional remote annunciator

Additional modules may be added in parallel to remote annunciators. In order to operate properly, the device to be added in parallel to the annunciator must not have cable drop lengths greater than 2.7 m (9 ft.). Refer to Illustration 6.

Illustration 6	g01093228
Connection details for devices in parallel with remote annunciator