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J1939 Message Center System User Manual

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Au SAE J1939 Message Center System (MCS)

Au SAE J1939 Message Center System (MCS)

Au J1939 Message Center System (MCS) includes a handheld device and computer software with a graphic user interface (GUI). Au J1939 MCS is a turn-key solution that displays about 20 SAE-J1939 parameters on a computer screen. The GUI could serve as a secondary display on trucks, school buses, recreation vehicles (RV), marine vessels, or any vehicles with SAE-J1939 controller area network (CAN).

Au SAE J1939 Message Center System (MCS) Graphic User Interface

Major Hardware Features

Au J1939 MCS box is a handheld device with one LED and two DB9 connectors (one is a DB9 female connector on the RS232 side, the other is a DB9 male connector on the BUS side). The major features of the device are listed below:

  • Power Supply: Operating range: 10V ~ 32V DC; nominal voltage: +12V DC or +24V DC
  • Operating Electric Current: 65mA typical, 250mA max
  • Operating Temperature: -40°F to 185°F (-40°C to 85°C)
  • Size: 3-1/8 inch L X 1-11/16 inch W X 13/16 inch H (78mm X 42mm X 21mm)
  • TVS (Transient Voltage Suppressor) protection on J1939 and J1708/J1587 bus
  • Enclosure Color: Black and translucent red
  • 1 LED for communication event indication
  • 1 RS232 interface (DB9 female connector): can connect to a PC or any device with RS232 serial port( default RS232 baud rate: 115.2K)
  • 1 BUS interface (DB9 male connector): can connect to J1939/CAN network and a power supply (+14.2V / 24V DC nominal). The pin-out of the DB9 male "BUS" interface is illustrated in following pin-out diagram:

Pin out Diagram

Pin-out for Au SAE J1939 MCS Bus side DB9 Male Connector

Three ways of PC connection

Au J1939 MCS device has an RS232 interface. It can be connected to a PC in one of three ways

Three ways of PC connection for Au J1939 MCS

It can be connected to the RS232 (serial) port of a PC through an RS232 serial extension cable (part#: CBL-RS232-01)

It can be connected to the USB port of a PC through a USB to RS232 converter cable (part#: CBL-USB-232)

With an optional built-in Bluetooth module, the J1939 MCS device can communicate with a computer through a Bluetooth dongle

Typical topology

A typical application of Au J1939 MCS in SAE J1939-15 network is illustrated here:

typical topology of J1939 network with Au J1939 MCS

Major Software Features

  • Automatic CAN baud rate detection
  • Ease of Use: Displays SAE-J1939 messages from CAN network without the requirement of decent J1939 knowledge/experience or very complicated configuration settings.
  • 6 parameters displayed in both analog Gauges and digital display:
    • Engine Revolution per Minute (RPM)
    • Vehicle Speed
    • Engine Oil pressure
    • Engine Coolant Temperature
    • Battery Voltage (from CAN bus or from power supply for the device)
    • J1939 Fuel level (if available)
  • 11 parameters displayed in digital outputs and computer clock
    • Engine Hour
    • Trip Odometer Accumulation and Reset Capability
    • Transmission Temperature
    • Engine Boost Pressure
    • Instantaneous Fuel Economy
    • Instantaneous Fuel Rate
    • Accelerator Position
    • Inlet Air Temperature
    • Engine Load Percentage
    • Engine Trip
    • Total Vehicle distance
    • Vehicle Identification Number (VIN)
    • Clock Display
  • 8 message/warning lamps
    • Cruise Lamp
    • Water In Fuel Information
    • Engine Red Stop warning Lamps
    • Engine Amber warning Lamps
    • Transmission Red Stop Warning Lamps
    • Transmission Amber Warning Lamps
    • ABS Red Stop Warning Lamps
    • ABS Amber Warning Lamps

Au J1939 MCS and Optional Cables

Au Combo Interpreter
Au J1939 MCS
Part #:MCSJ1939-001       Price: $260 USD
Au J1939 MCS User Manual
6-wire CAN Cable (pigtail)
6-wire CAN/J1708 Cable for DB9 Male Connector
Part #: CBL-CAN-485-01      Price: $13.99 USD
Au J1939/J1708 Combo Cable with DB9 Female Connector and 9-way green round threaded plug
Au J1939/J1708 Combo Cable with DB9 Female Connector and 9-way green round threaded plug
Part #:CBL-CAN-485-03G       Price: $45 USD
Au Y cable with two 9-way black connectors and a DB9 female connector, twisted wires, 48 inch length.
Au Y cable with two 9-way black connectors and a DB9 female connector, twisted wires, 48 inch length.
Part #:CBL-CAN-06-DB9       Price: $85 USD
Data Sheet for CBL-CAN-06-DB9
Au Y cable with two 9-way green connectors and a DB9 female connector
Au Y cable with two 9-way green connectors and a DB9 female connector, 48 inch length.
Part #:CBL-CAN-06G-DB9       Price: $85 USD
Data Sheet for CBL-CAN-06G-DB9
USB to RS232 Converter Cable
Part #: CBL-USB-232        Price: $15.99 USD
RS232 Serial Extension Cable
RS232 Serial Extension Cable
Part #: CBL-RS232-01        Price: $8.99 USD
PWR-912V-CP

Wall Mount AC/DC Power Supply - Positive Center
Part#: PWR-912V-CP      Price: $14.99 (USD)