How to read ELD data with FMX00A

Terms and definitions

Acronyms and terms used in the document:

• BT – Bluetooth®;
• ELD – Electronic Logging Devices.

Introduction

This document contains information required for developing an application for receiving Electronic Logging Devices data via Bluetooth® from FMC00A and FMM00A series devices.

The ELD synchronizes with the CMV engine to automatically record:

• Engine power status
• Vehicle motion status
• Miles driven
• Engine hours
• Identification of driver/authorized user, vehicle, and motor carrier
• Duty status

Configurable parameters

ELD functionality has 3 additional parameters:

Parameter ID	Parameter Type	Default Value	Value Range		Value	Parameter Name
			Min	Max
40000	Uint8	1	0	3	0 - Disable 1 - OBD 2 - ELD 3 - Non-OBD compliant	OBD Feature
40002	Uint16	10	2	65535	Seconds	ELD data send period
40008	Uint8	0	0	1	0 - Disable 1 - Enable	Send ELD data via Bluetooth®

ELD APP workflow

ELD functionality start to send data periodically via BT right after external BT device has been connected if OBD Feature (parameter ID 40000) is set to ELD (option 2). ELD data sending is paused if Configurator is connected. ELD data is resumed after configurator disconnects. ELD data sending resumes automatically when external BT device reconnects after connection loss.

ELD data packet structure

{
"obd_vin": "4V4NC9EH4FN187825",
"loc": "-10310092,3517679",
"time": "1675874086",
"can_data": "1",
"engine_hours": "315",
"dashboard_mileage": "919483",
"obd_rpm": "3224",
"obd_speed": "25",
"ignition": "1",
"total_fuel": "182",
"engine_idle_hours": "156",
"dtc_count": "2",
"fuel_level_1": "35",
"fuel_level_2": "46",
"battery_voltage": "24",
"total_idle_fuel": "3152",
"trip_distance": "306",
"fuel_economy": "12",
"ambient_air_temp": "21",
"engine_coolant_temp": "50",
"engine_load": "89",
"engine_throttle": "94",
"trip_fuel_used": "17",
"oil_temp": "90",
"oil_pressure": "6",
"seat_belt_status": "0",
"cruise_control_state": "3",
"throttle_pedal_pos": "90",
"engine_coolant_level": "60",
"engine_coolant_press": "4",
"transmission_oil_temp": "60",
"parking_brake_switch": "0",
"brake_application_press": "9",
"brake_pedal_pos": "32"

}

ELD J1939 Parameters definitions

AVL ID	Config ID	Parameter ID for JSON	J1939 PGN	J1939 SPN	Units	Description
1176	40630	dashboard_mileage	65217	917	km	Vehicle Total Distance
36	40160	obd_rpm	61444	190	rpm	Vehicle RPM
256	40410	obd_vin	65260	237		Vehicle VIN
1178	40650	ignition				Ignition state according to RPM, possible values: 0 – RPM=0 or 1– RPM>0
		loc				Current coordinates (longitude and latitude), example value “-10310092,3517679”, actual position is lon=-103.10092, lat=35.17679
24	50090	obd_speed	65265	84	km/h	Wheel based speed
24	50090	obd_speed	65132	1624	km/h	if PGN 65265 is not available data from PGN 65132 is used.
1202	40890	ignition	64980	10145		Indicates that the ignition (or “run”) state of the operator key switch is active. This state is also known in DIN 75552 as “KL15”. 00b = Ignition state is not active 01b = Ignition state is active 10b = Error 11b = Not Available
1177	40640	engine_hours	65253	247	h	Total Engine hours
		time				A point in time, defined as the number of seconds that have elapsed since 00:00:00 Coordinated Universal Time (UTC), Thursday, 1 January 1970. Current timestamp used in record saving.
		can_data				Is CAN data available or not
1180	40670	total_fuel	64777	5054	l	Fuel consumed during all or part of a journey. High resolution used for calculations and fleet management systems.
1180	40670	total_fuel	65257	182	l	If PGN 64777 is not available data from PGN 65257 is used.
1181	40680	engine_idle_hours	65244	235	h	Accumulated time of operation of the engine while under idle conditions.
1182	40690	dtc_count	40448	4106		MIL-On DTCs
48	40280	fuel_level_1	65276	96	%	Ratio of volume of fuel to the total volume of fuel storage container. When Fuel Level 2 (SPN 38) is not used, Fuel Level 1 represents the total fuel in all fuel storage containers. When Fuel Level 2 is used, Fuel Level 1 represents the fuel level in the primary or left-side fuel storage container.
1183	40700	fuel_level_2	65276	38	%	Ratio of volume of fuel to the total volume of fuel in the second or right-side storage container. When Fuel Level 2 is not used, Fuel Level 1 (SPN 96) represents the total fuel in all fuel storage containers.
1184	40710	battery_voltage	61733	9025	V	SLI battery terminal voltage
1185	40720	total_idle_fuel	65244	236	l	Accumulated amount of fuel used during vehicle operation while under idle conditions.
1186	40730	trip_distance	65217	918	m	Distance traveled during all or part of a journey.
1187	40740	fuel_economy	65266	184	km/L	Current fuel economy at current vehicle velocity.
1188	40750	ambient_air_temp	65269	171	°C	Temperature of air surrounding vehicle.
		engine_coolant_temp	65262	110	°C	Temperature of liquid found in engine cooling system.
1189	40760	engine_load	64523	13131	%	The desired position of the Throttle valve 1 (SPN 51) that is regulating the fluid, usually air/fuel mixture to the engine as commanded by the Engine Control unit. 0% represents no supply and 100% is full supply.
1192	40790	trip_fuel_used	64777	5053	l	Fuel consumed during all or part of a journey.
1191	40780	oil_temp	65262	175	°C	Temperature of the engine lubricant.
1191	40780	oil_temp	65188	1135	°C	If PGN 65262 is not available data from PGN 65188 is used.
1193	40800	oil_pressure	64751	7468	kPa	Gage pressure of oil in engine lubrication system as provided by oil pump.
1194	40810	seat_belt_status	57344	1856		State of switch used to determine if Seat Belt is buckled 00b = NOT Buckled 01b = OK - Seat Belt is buckled 10b = Error - Switch state cannot be determined 11b = Not Available
1195	40820	cruise_control_state	61651	7317		Indicates the state of the PCC controller. 0000b = Disabled 0001b = Enabled 0010b = Enabled, but not functional due to vehicle position not available 0011b = Enabled, but not functional due to map position not available 0100b = Enabled, but not functional due to road grade info not available 0101b = Enabled, but not functional due to predicted path not available 0110b = Enabled, but not functional due to vehicle speed below speed threshold 0111b = Enabled, but not functional due to inhibited by driver 0111b = Enabled, but not functional due to inhibited by driver 1001b to 1101b = SAE Reserved 1110b = Error 1111b = Not Available
1196	40830	throttle_pedal_pos	61443	91	%	Accelerator Pedal Position
1197	40840	engine_coolant_level	65263	111	%	Ratio of volume of liquid found in engine cooling system to total cooling system volume. Typical monitoring location is in the coolant expansion tank.
1198	40850	engine_coolant_press	65263	109	kPa	Gage pressure of liquid found in engine cooling system.
1199	40860	transmission_oil_temp	65272	177	°C	Transmission Oil Temperature
1179	40660	parking_brake_switch	65265	70		Switch signal which indicates when the parking brake is set. 00b = Parking brake not set 01b = Parking brake set 10b = Error 11b = Not available
1120	40870	brake_application_press	65274	116	kPa	Gage pressure of compressed air or fluid in vehicle braking system measured at the brake chamber when brake shoe (or pad) is placed against brake drum (or disc).
1201	40880	brake_pedal_pos	61441	521	%	Ratio of brake pedal position to maximum pedal position.

ELD functionality settings

ELD settings

J1939 IO elements