j1939-pctool

J1939 訊號說明

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更新記錄

item	note
20171205	第一版

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目錄

• J1939 訊號說明
  • J1939 Format
  • PDU
  • SAE J1939 PGN Range
• Test
  • 模擬器
• PGN 資料
  • FEF6,SPN102: Boot Pressure (kPa)
  • FEEF
  • F004
  • FEF2
  • FEE0
  • FEF1
  • F003
  • FE6C
  • FEE5
  • FEC1
• Device Data
• 測試驗證
  • Packing Format
  • crankshaft
  • wheel speed
• 其它參考

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J1939 訊號說明

J1939 Format

• J1939 Message Format 資料來源；Serial Control and Communications Vehicle Network

PDU

• pdu 資料來源；[SAE J1939协议]
  • P: Priority
    3個bit, 111最低 000最高
    PGN (EDP + DP + PF +PS) : Parameter Group Number
  • SA: 8 Bit Source Address
  • PDU Foramte(PF)
    PF = 0-239 (0x0-0xEF,即PUD1) indicates a destination address in PS
    此時目地位置8bit放於PS，表示此資料有指定destination address
  • PF = 240-255 (0xF0-0xFF,即PUD2) indicate extension to PDU Format(PF)
    此時由PS存放低位元8bit
    0xF000 - 0xFFFF ：為無指定位置的訊息，即boardcast

SAE J1939 PGN Range

• PGN Range 資料來源:Serial Control and Communications Vehicle Network
  • SAE = Assigned by SAE
  • MF = Manufacturer Specific - Proprietary Messages

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Test

模擬器

• 模擬器

  

• can分析器

  

• 數值如下

  18FEF600 (FEF6) FF 00 FF FF FF FF FF FF
  18FEEF00 (FEEF) 00 FF FF 00 FF FF 00 FF
  0CF00400 (F004) FF FF 7D A0 8C FF FF FF
  18FEF200 (FEF2) 00 00 FF FF FF FF FF FF
  18FEE000 (FEE0) 7E 01 00 00 7E 36 0C 00
  18FEF100 (FEF1) FF 00 5A FF FF FF FF FF
  0CF00300 (F003) FF E1 00 FF FF FF FF FF
  18FE6C00 (FE6C) FF FF FF FF FF FF 00 5A
  18FEE500 (FEE5) 45 00 00 00 AE 03 00 00 -> 1s

011=> 控制報文 (0Cxxxxxx)
110=> 請求,ack,其它報文 (18xxxxxx)

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PGN 資料

FEF6,SPN102: Boot Pressure (kPa)

SPN102: Boot Pressure (kPa)

• FEF6

FEEF

• PGN 65263 (0xFEEF) Engine Fluid Level/Pressure 1

F004

• F004 0x7D = 0%
  (0x8CA0 = 3600) / 8 = 4500

FEF2

• FEF2 資料來源:fms document_v_03_vers.14.09.2012 - FMS-Standard

FEE0

此FEE0是沒有採用，採用FEC1
FEE0沒有在FSM手冊裡面

• PGN 65248 (0xFEE0) Vehicle Distance

• FEE0

  

(0x0000017E = 382 ) / 8 = 47
(0x000C367E = 800382) / 8 = 100047

FEF1

• FEF1 ( 0x5A00 = 23040 ) / 256 = 90

F003

• F003 ( 0xE1 = 225 ) * 0.4 = 90

FE6C

• FE6C

FEE5

• FEE5 ( 0x45 = 69 ) 0.05 = 3.45
  ( 0x3AE = 942) 1000 = 942000

FEC1

• FEC1

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Device Data

• device data

  23:27:05.358 40 61 00 20 22 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 42 0D 0A
  23:27:06.201 40 62 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0D 0A
  23:27:07.192 40 63 00 00 00 FF FF 00 00 00 00 00 00 00 00 13 7F B4 00 00 44 0D 0A
  23:27:08.171 40 64 20 22 00 00 00 00 00 00 00 00 00 00 E0 01 00 00 00 00 23 0D 0A
  23:27:09.176 40 65 00 00 00 22 DA 00 7B 8E 00 00 00 00 00 00 00 00 00 00 05 0D 0A
  23:27:10.175 40 31 00 5A F3 1F E1 00 00 00 00 C8 A0 8C 0F 00 00 00 0A
  23:27:10.175 00 5A 0D 0A
  23:27:11.196 40 32 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0D 0A
  23:27:12.175 40 33 00 00 00 FF FF FF FF 00 5A 78 00 FF 00 00 00 00 00 03 D0 0D 0A
  23:27:13.183 40 61 00 20 22 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 42 0D 0A
  23:27:14.197 40 62 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0D 0A
  23:27:15.175 40 63 00 00 00 FF FF 00 00 00 00 00 00 00 00 13 7F B4 00 00 44 0D 0A
  23:27:16.177 40 64 20 22 00 00 00 00 00 00 00 00 00 00 E0 01 00 00 00 00 23 0D 0A
  23:27:17.219 40 65 00 00 00 22 DA 00 7B 8E 00 00 00 00 00 00 00 00 00 00 05 0D 0A
  23:27:18.184 40 31 00 5A F3 1F E1 00 00 00 00 C8 A0 8C 0F 00 00 00 0A
  23:27:18.184 00 5A 0D 0A
  23:27:19.175 40 32 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0D 0A
  23:27:20.178 40 33 00 00 00 FF FF FF FF 00 5A 78 00 FF 00 00 00 00 00 03 D0 0D 0A
  23:27:21.208 40 61 00 20 22 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 42 0D 0A
  23:27:22.184 40 62 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0D 0A
  23:27:23.225 40 63 00 00 00 FF FF 00 00 00 00 00 00 00 00 13 7F B4 00 00 44 0D 0A
  23:27:24.201 40 64 20 22 00 00 00 00 00 00 00 00 00 00 E0 01 00 00 00 00 23 0D 0A
  23:27:25.219 40 65 00 00 00 22 DA 00 7B 8E 00 00 00 00 00 00 00 00 00 00 05 0D 0A

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測試驗證

Packing Format

• Packing Format

  

• raw data

  

  40 31 00 50 F3 1F E1 08 00 00 00 7D 60 6D 0F 00 00 00 07 00 AB 0D 0A
  40 32 00 00 00 00 00 00 00 00 00 00 0A 00 00 00 00 00 00 00 0A 0D 0A
  40 33 00 00 00 FF FF FF FF 00 50 78 00 FF 00 00 00 00 00 03 C6 0D 0A
  40 61 00 20 22 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 42 0D 0A
  40 62 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0D 0A
  40 63 00 C8 00 FF FF 00 00 00 00 00 00 00 00 13 7F A0 00 00 F8 0D 0A
  40 64 20 22 00 00 00 00 00 00 00 00 00 00 E0 01 00 00 00 00 23 0D 0A
  40 65 00 00 00 62 DA 20 7B F7 00 00 00 00 00 00 00 00 00 00 CE 0D 0A

• USBCAN Log

  

• PCTOOL

  

• APP1 Data

  

• APP2 Data

  

crankshaft

• crankshaft(曲軸)

  

  由計算crankshaft(曲軸)角度，來取得RPM
  即1ms內跑了多少角度即可算出RPM, 1圈720度

• SPN190: Engine RPM <= F004
  Actual engine RPM(由計算曲軸角度得到)

wheel speed

• wheel speed

  

• CRANKSHAFT POSITION (CKP) SENSOR
  1圈會回傳n個pulse，可得到角度
  其中歸位點的pulse間距比大，因此可知道 每秒轉了幾圈，即可計算出speed

• SPN84:Wheel-Baseed Vehicle Speed <= FEF1
  Speed of the vehicle as calculated from wheel

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其它參考

• SAE J1939 Standards Collection
• Serial Control and Communications Vehicle Network
• TCU J1939 CAN Messages - Powertrain Control Solutions
• CANbus J1939 Engine Monitor - Barksdale Inc.
  • FEEF
• fms document_v_03_vers.14.09.2012 - FMS-Standard
  • FEF2

• J1939 Simulator

• Technical Information Library

  • Industrial/Power Generation

• Information about the Bus-FMS-Standard

• Simulating SAE J1939 PGNs Used By Truck & Bus FMS (Fleet Management System) Standard

• Au Truck / Bus Fleet Management System (FMS) Simulators

• 只要3分鐘 了解動力如何從發動機來到車輪

• CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION