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Configuring Thermocouple Inputs

FIGURE 57 shows the ECM Identification Parameters list. This list shows the ECM serial number (read-only) of the module that is connected, and allows for configuration of the ECU instance. Each thermocouple module on the data link must have a unique ECU instance. If ECU instances are duplicated, one of the modules must be disconnected and the other reconfigured to a different ECU instance.

FIGURE 57: CATERPILLAR ® SERVICE TOOL THERMOCOUPLE MODULE IDENTIFICATION PARAMETERS

Upon changing the ECU instance, the Caterpillar® Service Tool will automatically reconnect to the data link, and the Thermocouple module name should reflect the new ECU instance. In this example, as shown in FIGURE 58, the module was previously named Thermocouple Module #1, and after the ECU instance is changed to 2 and the service tool reconnects, the name reads Thermocouple Module #2.

FIGURE 58: CATERPILLAR ® SERVICE TOOL THERMOCOUPLE MODULE AFTER ECU INSTANCE CHANGE

CONFIGURING THERMOCOUPLE INPUTS

FIGURE 59 shows the THERMOCOUPLE INPUT #1 Configuration list, when using the Caterpillar® Service Tool. All twenty thermocouple inputs have identical parameters and options.

FIGURE 59: CATERPILLAR ® SERVICE TOOL THERMOCOUPLE INPUT CONFIGURATION

The SENSOR TYPE CONFIGURATION selects either a J or K type configuration. Select the appropriate configuration based on the type of thermocouple installed. The SUSPECT PARAMETER NUMBER (SPN) is a numerical entry between a predetermined list of SPNs that are supported by the Thermocouple module. All of the thermocouple inputs support the same list of SPNs. To change the SPN, type in the number that corresponds with the desired parameter as shown in FIGURE 61. See RENR7902 for specific information on what possible SPN values can be used. The HIGH TEMPERATURE SHUTDOWN EVENT THRESHOLD sets the high temperature at which a high shutdown event will occur. The HIGH TEMPERATURE WARNING EVENT THRESHOLD sets the high temperature at which a high warning event will occur.

FIGURE 60: CATERPILLAR ® SERVICE TOOL THERMOCOUPLE MODULE SUSPECT PARAMETER NUMBER

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