examples/j1939/j1939_parse.json

   1
   2 {   "name": "Virtual J1939",
   3         "extra_sources": [],
   4         "initializers": [],
   5         "loopers": [],
   6         "buses": {},
   7         "commands": [],
   8         "messages": {
   9                 "61442": {
  10                         "comment": "Electronic Transmission Controller 1",
  11                         "length": 8,
  12                         "name": "ETC1",
  13                         "bus" : "j1939",
  14                         "is_fd" : false,
  15                         "is_extended": false,
  16                         "is_j1939" : true,
  17                         "signals" : {
  18                                 "Trns.Trque.Converter.Lockup.Engaged" : {
  19                                         "generic_name": "Trns.Trque.Converter.Lockup.Engaged",
  20                                         "bit_position": 2,
  21                                         "bit_size": 2,
  22                                         "factor": 1,
  23                                         "offset": 0,
  24                                         "comment": "State signal which indicates whether the torque converter lockup is engaged.",
  25                                         "is_big_endian": false,
  26                                         "is_signed": false,
  27                                         "writable" : true,
  28                                         "states": {
  29                                                 "TorqueConverterLockupDisengaged": [0],
  30                                                 "TorqueConverterLockupEngaged": [1],
  31                                                 "Error": [2],
  32                                                 "NotAvailable": [3]
  33                                         }
  34                                 },
  35                                 "Trns.Trq.Cnvrtr.Lckp.Trnstn.In.Prcess" : {
  36                                         "generic_name": "Trns.Trq.Cnvrtr.Lckp.Trnstn.In.Prcess",
  37                                         "bit_position": 6,
  38                                         "bit_size": 2,
  39                                         "factor": 1,
  40                                         "offset": 0,
  41                                         "comment": "State signal indicating whether or not the transmission torque converter lock up clutch is transitioning between being",
  42                                         "is_big_endian": false,
  43                                         "is_signed": false,
  44                                         "writable" : true,
  45                                         "states": {
  46                                                 "TransitionIsNotInProcess": [0],
  47                                                 "TransitionIsInProcess": [1],
  48                                                 "Error": [2],
  49                                                 "NotAvailable": [3]
  50                                         }
  51                                 },
  52                                 "Src.Addrss.Of.Ctrllng.Dvc.Fr.Trns.Cntrl" : {
  53                                         "generic_name": "Src.Addrss.Of.Ctrllng.Dvc.Fr.Trns.Cntrl",
  54                                         "bit_position": 56,
  55                                         "bit_size": 8,
  56                                         "factor": 1,
  57                                         "offset": 0,
  58                                         "comment": "The source address of the SAE J1939 device currently controlling the transmission.",
  59                                         "is_big_endian": false,
  60                                         "is_signed": false,
  61                                         "writable" : true
  62                                 },
  63                                 "Momentary.Eng.Max.Power.Enable" : {
  64                                         "generic_name": "Momentary.Eng.Max.Power.Enable",
  65                                         "bit_position": 36,
  66                                         "bit_size": 2,
  67                                         "factor": 1,
  68                                         "offset": 0,
  69                                         "comment": "Momentarily Requesting highest torque map from the engine control",
  70                                         "is_big_endian": false,
  71                                         "is_signed": false,
  72                                         "writable" : true,
  73                                         "states": {
  74                                                 "notRqingMaxPowerAvailable": [0],
  75                                                 "mmntarilyRqingMaxPowerAvailable": [1],
  76                                                 "fault": [2],
  77                                                 "notAvailable": [3]
  78                                         }
  79                                 },
  80                                 "Trans.Input.Shaft.Speed" : {
  81                                         "generic_name": "Trans.Input.Shaft.Speed",
  82                                         "bit_position": 40,
  83                                         "bit_size": 16,
  84                                         "factor": 0.125,
  85                                         "offset": 0,
  86                                         "comment": "Rotational velocity of the primary shaft transferring power into the transmission.",
  87                                         "unit": "rpm",
  88                                         "is_big_endian": false,
  89                                         "is_signed": false,
  90                                         "writable" : true
  91                                 },
  92                                 "Progressive.Shift.Disable" : {
  93                                         "generic_name": "Progressive.Shift.Disable",
  94                                         "bit_position": 34,
  95                                         "bit_size": 2,
  96                                         "factor": 1,
  97                                         "offset": 0,
  98                                         "comment": "Command signal used to indicate that progressive shifting by the engine should be disallowed.",
  99                                         "is_big_endian": false,
 100                                         "is_signed": false,
 101                                         "writable" : true,
 102                                         "states": {
 103                                                 "ProgressiveShiftIsNotDisabled": [0],
 104                                                 "ProgressiveShiftIsDisabled": [1],
 105                                                 "Reserved": [2],
 106                                                 "TakeNoAction": [3]
 107                                         }
 108                                 },
 109                                 "Eng.Momentary.Overspeed.Enable" : {
 110                                         "generic_name": "Eng.Momentary.Overspeed.Enable",
 111                                         "bit_position": 32,
 112                                         "bit_size": 2,
 113                                         "factor": 1,
 114                                         "offset": 0,
 115                                         "comment": "Command signal used to indicate that the engine speed may be boosted up to the maximum engine overspeed value to",
 116                                         "is_big_endian": false,
 117                                         "is_signed": false,
 118                                         "writable" : true,
 119                                         "states": {
 120                                                 "MomentaryEngOverspeedIsDisabled": [0],
 121                                                 "MomentaryEngOverspeedIsEnabled": [1],
 122                                                 "Reserved": [2],
 123                                                 "TakeNoAction": [3]
 124                                         }
 125                                 },
 126                                 "Percent.Clutch.Slip" : {
 127                                         "generic_name": "Percent.Clutch.Slip",
 128                                         "bit_position": 24,
 129                                         "bit_size": 8,
 130                                         "factor": 0.4,
 131                                         "offset": 0,
 132                                         "comment": "Parameter which represents the ratio of input shaft speed to current engine speed (in percent).",
 133                                         "unit": "%",
 134                                         "is_big_endian": false,
 135                                         "is_signed": false,
 136                                         "writable" : true
 137                                 },
 138                                 "Trans.Output.Shaft.Speed" : {
 139                                         "generic_name": "Trans.Output.Shaft.Speed",
 140                                         "bit_position": 8,
 141                                         "bit_size": 16,
 142                                         "factor": 0.125,
 143                                         "offset": 0,
 144                                         "comment": "Calculated speed of the transmission output shaft.",
 145                                         "unit": "rpm",
 146                                         "is_big_endian": false,
 147                                         "is_signed": false,
 148                                         "writable" : true
 149                                 },
 150                                 "Trans.Shift.In.Process" : {
 151                                         "generic_name": "Trans.Shift.In.Process",
 152                                         "bit_position": 4,
 153                                         "bit_size": 2,
 154                                         "factor": 1,
 155                                         "offset": 0,
 156                                         "comment": "Indicates that the transmission is in process of shifting from the current gear to the selected gear.",
 157                                         "is_big_endian": false,
 158                                         "is_signed": false,
 159                                         "writable" : true,
 160                                         "states": {
 161                                                 "ShiftIsNotInProcess": [0],
 162                                                 "ShiftInProcess": [1],
 163                                                 "Error": [2],
 164                                                 "NotAvailable": [3]
 165                                         }
 166                                 },
 167                                 "Trans.Driveline.Engaged" : {
 168                                         "generic_name": "Trans.Driveline.Engaged",
 169                                         "bit_position": 0,
 170                                         "bit_size": 2,
 171                                         "factor": 1,
 172                                         "offset": 0,
 173                                         "comment": "Driveline engaged indicates the transmission controlled portion of the driveline is engaged sufficiently to allow a transfer",
 174                                         "is_big_endian": false,
 175                                         "is_signed": false,
 176                                         "writable" : true,
 177                                         "states": {
 178                                                 "DrivelineDisengaged": [0],
 179                                                 "DrivelineEngaged": [1],
 180                                                 "Error": [2],
 181                                                 "NotAvailable": [3]
 182                                         }
 183                                 }
 184                         }
 185                 },
 186                 "61444": {
 187                         "comment": "Electronic Engine Controller 1",
 188                         "length": 8,
 189                         "name": "EEC1",
 190                         "bus" : "j1939",
 191                         "is_fd" : false,
 192                         "is_extended": false,
 193                         "is_j1939" : true,
 194                         "signals" : {
 195                                 "Src.AddrssOf.Ctrllng.Dvc.Fr.Eng.Cntrl" : {
 196                                         "generic_name": "Src.AddrssOf.Ctrllng.Dvc.Fr.Eng.Cntrl",
 197                                         "bit_position": 40,
 198                                         "bit_size": 8,
 199                                         "factor": 1,
 200                                         "offset": 0,
 201                                         "comment": "The source address of the SAE J1939 device currently controlling the engine.",
 202                                         "is_big_endian": false,
 203                                         "is_signed": false
 204                                 },
 205                                 "Actl.Eng.Prcnt.Trque.High.Resolution" : {
 206                                         "generic_name": "Actl.Eng.Prcnt.Trque.High.Resolution",
 207                                         "bit_position": 4,
 208                                         "bit_size": 4,
 209                                         "factor": 0.125,
 210                                         "offset": 0,
 211                                         "comment": "This parameter displays an additional torque in percent of the reference engine torque.",
 212                                         "unit": "%",
 213                                         "is_big_endian": false,
 214                                         "is_signed": false,
 215                                         "states": {
 216                                                 "0000": [0],
 217                                                 "0125": [1],
 218                                                 "0875": [7],
 219                                                 "1111NotAvailable": [8]
 220                                         }
 221                                 },
 222                                 "Eng.Demand.Percent.Torque" : {
 223                                         "generic_name": "Eng.Demand.Percent.Torque",
 224                                         "bit_position": 56,
 225                                         "bit_size": 8,
 226                                         "factor": 1,
 227                                         "offset": -125,
 228                                         "comment": "The requested torque output of the engine by all dynamic internal inputs, including smoke control, noise control and low",
 229                                         "unit": "%",
 230                                         "is_big_endian": false,
 231                                         "is_signed": false
 232                                 },
 233                                 "Eng.Starter.Mode" : {
 234                                         "generic_name": "Eng.Starter.Mode",
 235                                         "bit_position": 48,
 236                                         "bit_size": 4,
 237                                         "factor": 1,
 238                                         "offset": 0,
 239                                         "comment": "There are several phases in a starting action and different reasons why a start cannot take place.",
 240                                         "is_big_endian": false,
 241                                         "is_signed": false,
 242                                         "states": {
 243                                                 "startNotRqed": [0],
 244                                                 "starterActiveGearNotEngaged": [1],
 245                                                 "starterActiveGearEngaged": [2],
 246                                                 "strtFnshdStrtrNtActvAftrHvngBnA": [3],
 247                                                 "strtrInhbtdDToEngAlreadyRunning": [4],
 248                                                 "strtrInhbtdDTEngNtReadyForStart": [5],
 249                                                 "strtrInhbtdDTDrvlnEnggdOthrTrns": [6],
 250                                                 "strtrInhbtdDToActiveImmobilizer": [7],
 251                                                 "strtrInhbtdDueToStarterOvertemp": [8],
 252                                                 "1011Reserved": [9],
 253                                                 "starterInhibitedReasonUnknown": [12],
 254                                                 "error": [14],
 255                                                 "notAvailable": [15]
 256                                         }
 257                                 },
 258                                 "Eng.Speed" : {
 259                                         "generic_name": "Eng.Speed",
 260                                         "bit_position": 24,
 261                                         "bit_size": 16,
 262                                         "factor": 0.125,
 263                                         "offset": 0,
 264                                         "comment": "Actual engine speed which is calculated over a minimum crankshaft angle of 720 degrees divided by the number of cylinders.",
 265                                         "unit": "rpm",
 266                                         "is_big_endian": false,
 267                                         "is_signed": false
 268                                 },
 269                                 "Actual.Eng.Percent.Torque" : {
 270                                         "generic_name": "Actual.Eng.Percent.Torque",
 271                                         "bit_position": 16,
 272                                         "bit_size": 8,
 273                                         "factor": 1,
 274                                         "offset": -125,
 275                                         "comment": "The calculated output torque of the engine.",
 276                                         "unit": "%",
 277                                         "is_big_endian": false,
 278                                         "is_signed": false
 279                                 },
 280                                 "Drivers.Demand.Eng.Percent.Torque" : {
 281                                         "generic_name": "Drivers.Demand.Eng.Percent.Torque",
 282                                         "bit_position": 8,
 283                                         "bit_size": 8,
 284                                         "factor": 1,
 285                                         "offset": -125,
 286                                         "comment": "The requested torque output of the engine by the driver.",
 287                                         "unit": "%",
 288                                         "is_big_endian": false,
 289                                         "is_signed": false
 290                                 },
 291                                 "Eng.Torque.Mode" : {
 292                                         "generic_name": "Eng.Torque.Mode",
 293                                         "bit_position": 0,
 294                                         "bit_size": 4,
 295                                         "factor": 1,
 296                                         "offset": 0,
 297                                         "comment": "State signal which indicates which engine torque mode is currently generating, limiting, or controlling the torque.",
 298                                         "is_big_endian": false,
 299                                         "is_signed": false,
 300                                         "states": {
 301                                                 "Low idle governor/no request (de": [0],
 302                                                 "Accelerator pedal/operator selec": [1],
 303                                                 "Cruise control": [2],
 304                                                 "PTO governor": [3],
 305                                                 "Road speed governor": [4],
 306                                                 "ASR control": [5],
 307                                                 "Transmission control": [6],
 308                                                 "ABS control": [7],
 309                                                 "Torque limiting": [8],
 310                                                 "High speed governor": [9],
 311                                                 "Braking system": [10],
 312                                                 "Remote accelerator": [11],
 313                                                 "Not available": [15]
 314                                         }
 315                                 }
 316                         }
 317                 },
 318                 "65253": {
 319                         "comment": "Engine Hours, Revolutions",
 320                         "length": 8,
 321                         "name": "HOURS",
 322                         "bus" : "j1939",
 323                         "is_fd" : false,
 324                         "is_extended": false,
 325                         "is_j1939" : true,
 326                         "signals" : {
 327                                 "Eng.Total.Revolutions" : {
 328                                         "generic_name": "Eng.Total.Revolutions",
 329                                         "bit_position": 32,
 330                                         "bit_size": 32,
 331                                         "factor": 1000,
 332                                         "offset": 0,
 333                                         "comment": "Accumulated number of revolutions of engine crankshaft during its operation.",
 334                                         "unit": "r",
 335                                         "is_big_endian": false,
 336                                         "is_signed": false
 337                                 },
 338                                 "Eng.Total.Hours.Of.Operation" : {
 339                                         "generic_name": "Eng.Total.Hours.Of.Operation",
 340                                         "bit_position": 0,
 341                                         "bit_size": 32,
 342                                         "factor": 0.05,
 343                                         "offset": 0,
 344                                         "comment": "Accumulated time of operation of engine.",
 345                                         "unit": "hr",
 346                                         "is_big_endian": false,
 347                                         "is_signed": false
 348                                 }
 349                         }
 350                 },
 351                 "61449": {
 352                         "comment": "Vehicle Dynamic Stability Control 2",
 353                         "length": 8,
 354                         "name": "VDC2",
 355                         "bus" : "j1939",
 356                         "is_fd" : false,
 357                         "is_extended": false,
 358                         "is_j1939" : true,
 359                         "signals" : {
 360                                 "Steer.Wheel.Angle" : {
 361                                         "generic_name": "Steer.Wheel.Angle",
 362                                         "bit_position": 0,
 363                                         "bit_size": 16,
 364                                         "factor": 0.0009765625,
 365                                         "offset": -31.374,
 366                                         "comment": "The main operator`s steering wheel angle (on the steering column, not the actual wheel angle).",
 367                                         "unit": "rad",
 368                                         "is_big_endian": false,
 369                                         "is_signed": false
 370                                 },
 371                                 "Longitudinal.Acceleration" : {
 372                                         "generic_name": "Longitudinal.Acceleration",
 373                                         "bit_position": 56,
 374                                         "bit_size": 8,
 375                                         "factor": 0.1,
 376                                         "offset": -12.5,
 377                                         "comment": "Indicates the longitudinal acceleration of the vehicle.",
 378                                         "unit": "m/s/s",
 379                                         "is_big_endian": false,
 380                                         "is_signed": false
 381                                 },
 382                                 "Lateral.Acceleration" : {
 383                                         "generic_name": "Lateral.Acceleration",
 384                                         "bit_position": 40,
 385                                         "bit_size": 16,
 386                                         "factor": 0.00048828125,
 387                                         "offset": -15.687,
 388                                         "comment": "Indicates a lateral acceleration of the vehicle.",
 389                                         "unit": "m/s/s",
 390                                         "is_big_endian": false,
 391                                         "is_signed": false
 392                                 },
 393                                 "Yaw.Rate" : {
 394                                         "generic_name": "Yaw.Rate",
 395                                         "bit_position": 24,
 396                                         "bit_size": 16,
 397                                         "factor": 0.0001220703125,
 398                                         "offset": -3.92,
 399                                         "comment": "Indicates the rotation about the vertical axis.",
 400                                         "unit": "rad/s",
 401                                         "is_big_endian": false,
 402                                         "is_signed": false
 403                                 },
 404                                 "Steer.Wheel.Angle.Sensor.Type" : {
 405                                         "generic_name": "Steer.Wheel.Angle.Sensor.Type",
 406                                         "bit_position": 22,
 407                                         "bit_size": 2,
 408                                         "factor": 1,
 409                                         "offset": 0,
 410                                         "comment": "Indicates whether the steering wheel angle sensor is capable of absolute measuring of the number of steering wheel",
 411                                         "is_big_endian": false,
 412                                         "is_signed": false,
 413                                         "states": {
 414                                                 "RelativeMeasuringPrinciple": [0],
 415                                                 "AbsMeasuringPrinciple": [1],
 416                                                 "Reserved": [2],
 417                                                 "NotAvailable": [3]
 418                                         }
 419                                 },
 420                                 "Steer.Wheel.Turn.Counter" : {
 421                                         "generic_name": "Steer.Wheel.Turn.Counter",
 422                                         "bit_position": 16,
 423                                         "bit_size": 6,
 424                                         "factor": 1,
 425                                         "offset": -32,
 426                                         "comment": "Indicates number of steering wheel turns, absolute position or relative position at ignition on.",
 427                                         "unit": "turns",
 428                                         "is_big_endian": false,
 429                                         "is_signed": false
 430                                 }
 431                         }
 432                 },
 433                 "65215": {
 434                         "comment": "Wheel Speed Information",
 435                         "length": 8,
 436                         "name": "EBC2",
 437                         "bus" : "j1939",
 438                         "is_fd" : false,
 439                         "is_extended": false,
 440                         "is_j1939" : true,
 441                         "signals" : {
 442                                 "Rlative.Speed.Rear.Axle2.Right.Wheel" : {
 443                                         "generic_name": "Rlative.Speed.Rear.Axle2.Right.Wheel",
 444                                         "bit_position": 56,
 445                                         "bit_size": 8,
 446                                         "factor": 0.0625,
 447                                         "offset": -7.8125,
 448                                         "comment": "The speed of the rear axle #2, right wheel relative to the front axle speed, SPN 904.",
 449                                         "unit": "km/h",
 450                                         "is_big_endian": false,
 451                                         "is_signed": false
 452                                 },
 453                                 "Relative.Speed.Rear.Axle2.Left.Wheel" : {
 454                                         "generic_name": "Relative.Speed.Rear.Axle2.Left.Wheel",
 455                                         "bit_position": 48,
 456                                         "bit_size": 8,
 457                                         "factor": 0.0625,
 458                                         "offset": -7.8125,
 459                                         "comment": "The speed of the rear axle #2, left wheel relative to the front axle speed, SPN 904.",
 460                                         "unit": "km/h",
 461                                         "is_big_endian": false,
 462                                         "is_signed": false
 463                                 },
 464                                 "Rlative.Speed.Rear.Axle1.Right.Wheel" : {
 465                                         "generic_name": "Rlative.Speed.Rear.Axle1.Right.Wheel",
 466                                         "bit_position": 40,
 467                                         "bit_size": 8,
 468                                         "factor": 0.0625,
 469                                         "offset": -7.8125,
 470                                         "comment": "The speed of the rear axle #1, right wheel relative to the front axle speed, SPN 904.",
 471                                         "unit": "km/h",
 472                                         "is_big_endian": false,
 473                                         "is_signed": false
 474                                 },
 475                                 "Relative.Speed.Rear.Axle1.Left.Wheel" : {
 476                                         "generic_name": "Relative.Speed.Rear.Axle1.Left.Wheel",
 477                                         "bit_position": 32,
 478                                         "bit_size": 8,
 479                                         "factor": 0.0625,
 480                                         "offset": -7.8125,
 481                                         "comment": "The speed of the rear axle #1, left wheel relative to the front axle speed, SPN 904.",
 482                                         "unit": "km/h",
 483                                         "is_big_endian": false,
 484                                         "is_signed": false
 485                                 },
 486                                 "Rlative.Speed.Front.Axle.Right.Wheel" : {
 487                                         "generic_name": "Rlative.Speed.Front.Axle.Right.Wheel",
 488                                         "bit_position": 24,
 489                                         "bit_size": 8,
 490                                         "factor": 0.0625,
 491                                         "offset": -7.8125,
 492                                         "comment": "The speed of the front axle, right wheel relative to the front axle speed, SPN 904.",
 493                                         "unit": "km/h",
 494                                         "is_big_endian": false,
 495                                         "is_signed": false
 496                                 },
 497                                 "Relative.Speed.Front.Axle.Left.Wheel" : {
 498                                         "generic_name": "Relative.Speed.Front.Axle.Left.Wheel",
 499                                         "bit_position": 16,
 500                                         "bit_size": 8,
 501                                         "factor": 0.0625,
 502                                         "offset": -7.8125,
 503                                         "comment": "The speed of the front axle, left wheel relative to the front axle speed, SPN 904.",
 504                                         "unit": "km/h",
 505                                         "is_big_endian": false,
 506                                         "is_signed": false
 507                                 },
 508                                 "Front.Axle.Speed" : {
 509                                         "generic_name": "Front.Axle.Speed",
 510                                         "bit_position": 0,
 511                                         "bit_size": 16,
 512                                         "factor": 0.00390625,
 513                                         "offset": 0,
 514                                         "comment": "The average speed of the two front wheels.",
 515                                         "unit": "km/h",
 516                                         "is_big_endian": false,
 517                                         "is_signed": false
 518                                 }
 519                         }
 520                 },
 521                 "65262": {
 522                         "comment": "Engine Temperature 1",
 523                         "length": 8,
 524                         "name": "ET1",
 525                         "bus" : "j1939",
 526                         "is_fd" : false,
 527                         "is_extended": false,
 528                         "is_j1939" : true,
 529                         "signals" : {
 530                                 "Eng.Fuel.Temp1" : {
 531                                         "generic_name": "Eng.Fuel.Temp1",
 532                                         "bit_position": 8,
 533                                         "bit_size": 8,
 534                                         "factor": 1,
 535                                         "offset": -40,
 536                                         "comment": "Temperature of fuel (or gas) passing through the first fuel control system.",
 537                                         "unit": "deg C",
 538                                         "is_big_endian": false,
 539                                         "is_signed": false
 540                                 },
 541                                 "Eng.Intercooler.Thermostat.Opening" : {
 542                                         "generic_name": "Eng.Intercooler.Thermostat.Opening",
 543                                         "bit_position": 56,
 544                                         "bit_size": 8,
 545                                         "factor": 0.4,
 546                                         "offset": 0,
 547                                         "comment": "The current position of the thermostat used to regulate the temperature of the engine intercooler.",
 548                                         "unit": "%",
 549                                         "is_big_endian": false,
 550                                         "is_signed": false
 551                                 },
 552                                 "Eng.Intercooler.Temp" : {
 553                                         "generic_name": "Eng.Intercooler.Temp",
 554                                         "bit_position": 48,
 555                                         "bit_size": 8,
 556                                         "factor": 1,
 557                                         "offset": -40,
 558                                         "comment": "Temperature of liquid found in the intercooler located after the turbocharger.",
 559                                         "unit": "deg C",
 560                                         "is_big_endian": false,
 561                                         "is_signed": false
 562                                 },
 563                                 "Eng.Turbo.Oil.Temp" : {
 564                                         "generic_name": "Eng.Turbo.Oil.Temp",
 565                                         "bit_position": 32,
 566                                         "bit_size": 16,
 567                                         "factor": 0.03125,
 568                                         "offset": -273,
 569                                         "comment": "Temperature of the turbocharger lubricant.",
 570                                         "unit": "deg C",
 571                                         "is_big_endian": false,
 572                                         "is_signed": false
 573                                 },
 574                                 "Eng.Oil.Temp1" : {
 575                                         "generic_name": "Eng.Oil.Temp1",
 576                                         "bit_position": 16,
 577                                         "bit_size": 16,
 578                                         "factor": 0.03125,
 579                                         "offset": -273,
 580                                         "comment": "Temperature of the engine lubricant.",
 581                                         "unit": "deg C",
 582                                         "is_big_endian": false,
 583                                         "is_signed": false
 584                                 },
 585                                 "Eng.Coolant.Temp" : {
 586                                         "generic_name": "Eng.Coolant.Temp",
 587                                         "bit_position": 0,
 588                                         "bit_size": 8,
 589                                         "factor": 0.03125,
 590                                         "offset": -273,
 591                                         "comment": "Temperature of liquid found in engine cooling system.",
 592                                         "unit": "deg C",
 593                                         "is_big_endian": false,
 594                                         "is_signed": false
 595                                 }
 596                         }
 597                 }
 598         }
 599 }