Eaton E31 keypad modules
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Effective October 2012 Supersedes March 2011 Eaton E31 keypad modules Contents Description 1 System description . . . . . . . . . . . . . . . . . . . . 2 2 Keypad modules . . . . . . . . . . . . . . . . . . . . . . 2 2.1 Lighting. . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.2 Icons . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.3 Status bar/indicators . . . . . . . . . . . . . . . . 2 2.4 Dimensions and cutout . . . . . . . . . . . . . 3 2.5 Connections: Master . . . . . . . . . . . . . . . 3 2.6 Connections: Expansion . . . . . . . . . . . . 3 2.7 Connector . . . . . . . . . . . . . . . . . . . . . . . 3 3 Modes of operation . . . . . . . . . . . . . . . . . . . 3 3.1 Normal mode . . . . . . . . . . . . . . . . . . . . . 3 3.2 Sleep mode . . . . . . . . . . . . . . . . . . . . . . 3 3.3 Wake on CAN message . . . . . . . . . . . . 3 3.4 Wake on switch press . . . . . . . . . . . . . . 3 4 Switch reporting . . . . . . . . . . . . . . . . . . . . . . 3 5 Module address . . . . . . . . . . . . . . . . . . . . . . 3 5.1 Master address . . . . . . . . . . . . . . . . . . . 4 5.2 Master addressing . . . . . . . . . . . . . . . . . 4 5.3 Expansion module address . . . . . . . . . . 4 5.4 Expansion switch press addressing . . . 4 5.5 Address assignment faults . . . . . . . . . . 4 5.6 Expansion address by CAN message. . . . . . . . . . . . . . . . . . . 4 5.7 Master service swap . . . . . . . . . . . . . . . 4 5.8 Expansion service swap . . . . . . . . . . . . 5 6 Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 7 CAN controller diagnostics. . . . . . . . . . . . . . 5 8 Part number and revision information . . . . 5 9 System faults . . . . . . . . . . . . . . . . . . . . . . . . 5 10 Message structure . . . . . . . . . . . . . . . . . . . . . 5 10.1 Messages sent to Eaton master . . . . . . 5 10.2 Messages sent by Eaton master . . . . . . 6 10.3 CAN 2.0b 29 bit header . . . . . . . . . . . . . 6 10.4 Data portion of message . . . . . . . . . . . . 6 11 Eaton CAN messages . . . . . . . . . . . . . . . . . . 7 11.1 Diagnostic fault messages . . . . . . . . . . 7 11.2 System message . . . . . . . . . . . . . . . . . . 7 11.3 Status message . . . . . . . . . . . . . . . . . . . 8 11.4 Module types on master . . . . . . . . . . . . 9 11.5 Switch press messages . . . . . . . . . . . . . 9 11.6 Wake system on switch press . . . . . . 10 11.7 Indicator lighting . . . . . . . . . . . . . . . . . 10 11.8 Indicator 2 bit commands . . . . . . . . . . 11 11.9 Icon LEDs control . . . . . . . . . . . . . . . . 11 11.10 Indicator and icon brightness level . . . 11 11.11 Special function messages . . . . . . . . . 12 12 Environmental and electronic specifications . . . . . . . . . . . . . 12 13 Troubleshooting . . . . . . . . . . . . . . . . . . . . . 12

Eaton E31 keypad modules Technical Data TD07002003E Effective October 2012 1 System description The Eaton eSM hardware system is designed with a master module that connects to other ECUs via SAE J1939 CAN 2.0b. The master communicates with Eaton expansion modules using LIN 2.0. Each master can support up to seven expansion modules. Features • Four lighted indicators per switch • Long life switches: 1,000,000 cycles • Easy address assignment • Immune to SAE J1455 and J1113 power disturbances • Emissions to CISPR 25 Class 3 • J1939 CAN 2.0b messaging • LIN 2.0 / SAE J2602 communication...

Eaton E31 keypad modules Technical Data TD07002003E Effective October 2012 2.7 Connector The system uses a standard sealed Deutsch DT Series connector. Using black connectors for masters and gray connectors for expansion modules is suggested to help identification of connectors on the wire harness. Deutsch DT Series Sealed Connector Connector body 6-pin wedge lock Female terminal 16-20 AWG Seal plug Crimper 2.5 Connections: Master The back cover of the master module is black. Terminal Number Function Vbat: Connection to the vehicle battery power. The Vbat pins of each connector are...

Eaton E31 keypad modules Technical Data TD07002003E Effective October 2012 5.1 Master address Master switch modules can have one of eight addresses. The address is stored in non-volatile memory. Master addresses are in the proprietary space of J1939 and have the following header values. Eaton Master Message Header The keypad address is stored permanently in non-volatile memory. It is set at the factory as A1 and can be changed by CAN message. 5.2 Master addressing The master address can be set by sending a "Set Master Address by CAN Message" command. All Eaton keypad masters on the...

Eaton E31 keypad modules Technical Data TD07002003E Effective October 2012 5.8 Expansion service swap A single expansion module can be swapped into a system, and the master will automatically give the proper address to that module. The master will do this without CANbus command. The module that is being swapped in must have an FFh address. Only one module can be swapped. All other modules must be properly configured and connected for the master to set the address. If the master had three expansions connected to it and the second module in the chain was removed, the master would see that...

Eaton E31 keypad modules 10.2 Messages sent by Eaton master Transmission rate Data length Data page PDU format Source address Specific Address Length PDU specific On demand or on switch press 8 ~ _168 = Master 8 (A8h) _6_ 65,441 = Master 1 65,442 = Master 2 65,443 = Master 3 65,444 = Master 4 65,445 = Master 5 65,446 = Master 6 65,447 = Master 7 65,448 = Master 8 Same as PDU specific 10.3 CAN 2.0b 29 bit header Byte 0 bit 0 = Data page: This is not used, set to 0 bit 1 = Extended data page: not used, set to 0 bits 2...3 = Low order bits of the three bit priority bit 4 =...

Eaton E31 keypad modules Technical Data TD07002003E Effective October 2012 What type of module it is The following table describes the type of data carried by each value of the data descriptor byte. Type of Data Data Descriptor Diagnostic fault messages 10h Report faults on modules in the system System messages 11h System commands sent to Eaton master. send data to other controllers on the vehicle Module types on master 18h.19h Configuration of expansion modules connected to the master. Used in address assignment and reporting the type of devices connected to the...