Discrete I/O Features

The SUSPECT PARAMETER NUMBER (SPN) is a choice between a predetermined list of SPNs that are supported by the RTD module. All of the RTD 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 64. 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 shutdown event will occur. The HIGH TEMPERATURE WARNING EVENT THRESHOLD sets the high temperature at which a high warning event will occur. The LOW TEMPERATURE WARNING EVENT THRESHOLD sets the low temperature at which a low warning event will occur. The EVENT NOTIFICATION DELAY TIME sets the amount of time the threshold must be reached until the RTD module triggers that particular event on the data link. Each of the delay time options corresponds with a particular event type.

FIGURE 64: CATERPILLAR ® SERVICE TOOL RTD MODULE SUSPECT PARAMETER NUMBER

17.4 DISCRETE I/O MODULE

The EMCP 3 GSC Discrete I/O (DIO) module is designed for mounting on generator sets or remotely, to provide auxiliary switch inputs or relay contact outputs. Up to 4 DIO modules can be used on the EMCP 3 GSC Accessory J1939 data link, given that they are programmed to unique ECU Instance numbers.

DISCRETE I/O FEATURES

Reads twelve (12) discrete inputs and sets eight (8) Form C relay outputs