AXIOMATIC AX032200 User manual

USER MANUAL UMAX032200
Version 1.0
1 Digital In/Ignition, 2 Digital Outputs Controller
Controller with SAE J1939
USER MANUAL
P/N: AX032200

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ACRONYMS
ACK Positive Acknowledgement
CSR CAN Status Report
DM Diagnostic Message (from SAE J1939 standard)
DTC Diagnostic Trouble Code
FMI Failure Mode Identifier
OC Occurrence Count
EA Axiomatic Electronic Assistant (Service Tool for Axiomatic ECUs)
ECU Electronic Control Unit (from SAE J1939 standard)
MAP Memory Access Protocol
NAK Negative Acknowledgement
PDU1 A format for messages that are to be sent to a destination address,
either specific or global
PDU2 A format used to send information that has been labeled using the Group Extension
technique and does not contain a destination address.
PGN Parameter Group Number (from SAE J1939 standard)
PropB Message that uses a Proprietary B PGN
SPN Suspect Parameter Number (from SAE J1939 standard)

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TABLE OF CONTENTS
GENERAL INFORMATION............................................................................................................................................... 4
1.1. INTRODUCTION TO AX032200 FEATURES.................................................................................................................. 4
J1939 NETWORK –DIAGNOSTIC BROADCAST.................................................................................................................. 6
1.2. CONTROL SOURCES ................................................................................................................................................. 6
1.3. DIGITAL INPUT FUNCTION BLOCKS ............................................................................................................................ 6
1.3.1. Digital Input Functionality............................................................................................................................................6
1.3.2. Digital Input Type .........................................................................................................................................................7
1.3.3. Debounce Time ............................................................................................................................................................8
1.4. DIGITAL OUTPUT FUNCTION BLOCKS ........................................................................................................................ 9
1.4.1. Digital Output Override................................................................................................................................................9
1.4.2. Digital Output Enable.................................................................................................................................................10
1.4.3. Digital Output Control................................................................................................................................................10
1.4.4. Digital Output Unlatch ............................................................................................................................................... 11
1.4.5. Digital Output Diagnostic Parameters........................................................................................................................11
1.5. MISCELLANEOUS.................................................................................................................................................... 12
1.6. DIAGNOSTICS......................................................................................................................................................... 12
1.7. CONSTANT DATA.................................................................................................................................................... 14
1.8. MATH FUNCTION BLOCK......................................................................................................................................... 15
1.9. PROGRAMMABLE LOGIC FUNCTION BLOCK ............................................................................................................. 16
1.10. LOOKUP TABLE FUNCTION BLOCK........................................................................................................................ 16
1.11. CONDITIONAL BLOCK ........................................................................................................................................... 17
1.12. SET /RESET LATCH FUNCTION BLOCK.................................................................................................................. 19
1.13. CAN TRANSMIT FUNCTION BLOCK........................................................................................................................ 19
1.14. CAN RECEIVE FUNCTION BLOCK.......................................................................................................................... 20
2. OVERVIEW OF J1939 FEATURES....................................................................................................................... 22
2.1. INTRODUCTION TO SUPPORTED MESSAGES............................................................................................................. 22
2.2. J1939 NAME,ADDRESS AND SOFTWARE ID............................................................................................................ 23
2.2.1. J1939 Name................................................................................................................................................................23
2.2.2. ECU Address ...............................................................................................................................................................23
2.2.3. Software Identifier .....................................................................................................................................................24
3. ECU SETPOINTS ACCESSED WITH ELECTRONIC ASSISTANT...................................................................... 25
3.1. J1939 NETWORK SETPOINTS.................................................................................................................................. 25
3.2. DIGITAL INPUT SETPOINTS ...................................................................................................................................... 25
3.3. DIGITAL OUTPUT SETPOINTS................................................................................................................................... 26
3.4. MISCELLANEOUS SETPOINTS .................................................................................................................................. 28
3.5. DIAGNOSTIC SETPOINTS ......................................................................................................................................... 28
3.6. CONSTANT DATA LIST SETPOINTS .......................................................................................................................... 29
3.7. MATH FUNCTIONAL BLOCK SETPOINTS ................................................................................................................... 30
3.8. PROGRAMMABLE LOGIC BLOCK SETPOINTS............................................................................................................ 32
3.9. LOOKUP TABLE SETPOINTS .................................................................................................................................... 34
3.10. CONDITIONAL BLOCK SETPOINTS.......................................................................................................................... 36
3.11. SET-RESET LATCH BLOCK ................................................................................................................................... 37
3.12. CAN TRANSMIT SETPOINTS.................................................................................................................................. 38
3.13. CAN RECEIVE SETPOINTS.................................................................................................................................... 39
4. RE-FLASHING OVER CAN WITH ELECTRONIC ASSISTANT BOOTLOADER................................................ 40
4.1. PREREQUISITES...................................................................................................................................................... 40
4.2. RE-FLASHING PROCEDURE ..................................................................................................................................... 40
5. INSTALLATION INSTRUCTIONS ......................................................................................................................... 45
6. TECHNICAL SPECIFICATIONS............................................................................................................................ 46
TECHNICAL DATASHEET #TDAX032200..........................................................ERROR! BOOKMARK NOT DEFINED.

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GENERAL INFORMATION
1.1. Introduction to AX032200 Features
The AX032200 electronic control unit (ECU) is designed to provide a simple interface between
J1939 CAN network and discrete electronic devices in a power generator set or industrial
environment. The hardware supports 1 digital input or ignition, 2 digital outputs. Each of the two
outputs have current feedback to the microprocessor.
The ECU has been designed to allow the maximum amount of versatility to optimize the
performance of the machine. Numerous configurable variables, called setpoints, have been
provided which are accessible using Axiomatic Technologies’ Electronic Assistant. Information
about the setpoint defaults and ranges is outlined in Section 4. The EA communicates with the
controller over the J1939 CAN bus and uses Memory Access Protocol (MAP) to read/write each
setpoint. Once the ECU has been setup as desired, the setpoints can be saved to a file, and
flashed into other controllers over the CAN bus using EA.
The ECU is an arbitrary address capable ECU, which can perform dynamic address allocation at
the run time. It also provides all necessary network support required by the J1939 standard.

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Figure 1. Block diagram

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J1939 Network –Diagnostic Broadcast
Diagnostic messages are triggered by the internal function blocks and then broadcasted on the
CAN bus network. However, in some applications this broadcast may not be required and so the
user has the option to disable or enable this feature. Section 3.1 and Figure 16 show the
configuration of this feature by using the Electronic Assistant tool.
1.2. Control Sources
The different function blocks in the ECU are commanded by a set of Control Sources. This section
lists the different available control sources for these functions and their respective ranges.
Value
Meaning
Source Range
0
Control Not Used
[0]
1
Digital Input
[1]
2
Analog Input
1 - Output 1 Current Feedback (Amp)
2 - Output 2 Current Feedback (Amp)
3 - Power Supply Measured (V)
3
CAN Receive
[1…8]
4
Constant Data
[1…6]
5
Math Functional Block
[1…4]
6
Programmable Logic Block
[1…2]
7
Lookup Table
[1…6]
8
Conditional Logic Block
[1…10]
9
Set-Reset Latch
[1…3]
10
Digital Output Feedback
[1…2]
Table 1: Control Sources
1.3. Digital Input Function Blocks
The 1 digital input of the controller have signals going into the controller are interpreted as 0 or 1.
The turn ON-signal (1) is reached at 12V input level while the turn OFF-signal (0) is reached at
0.8V input level. The discrete inputs can be used as control sources for digital outputs, as well as
other logic blocks.
The Digital Input also can read either a Frequency/RPM or Pulse Width Modulated (PWM) input.
For active inputs, a 10kΩ pull-up or pull-down resistor could also be connected at the input to
handle open-collector NPN (active low, pull-up) or PNP (active high, pull-down) signals.
The sub sections below explain in more detail the functionality and available setpoints/parameters
of the discrete inputs.
1.3.1. Digital Input Functionality
The Active High/Low parameter allows the user to select how the controller responds to the
behaviour of the digital input. Table 2 shows the different Active High/Low options with the default
being highlighted.

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Value
Meaning
0
Active High
1
Active Low
Table 2: Active High/Low
By default, the inputs are configured to Active High, an ON response is achieved when the input is
grounded.
An active high or low signal could be read by selecting the appropriate pull-up or pull-down 10kΩ
resistor, as shown in the following table.
Value
Meaning
0
Pullup/down Off
1
10kOhm Pullup
2
10kOhm Pulldown
Table 3. Pullup/Pulldown Resistor Options
1.3.2. Digital Input Type
The Digital Input Type parameter allows for flexibility in the response of the input.
4
Frequency/RPM
5
PWM Duty Cycle
Table 4 shows the options available for this parameter.
Value
Meaning
0
Normal Logic
1
Inverse Logic
2
Latched Logic
3
Inverse Latched Logic
4
Frequency/RPM
5
PWM Duty Cycle
Table 4: Digital Input Types
By default, the Normal Logic type is used for the digital input.
In Normal Logic mode, the input state is 1 in case the input signal is interpreted as an ON-signal.
The input state turns 0 if the input signal is interpreted as an OFF-signal.
For the Inverse Logic type, the opposite behavior applies. If the input signal is ON, the state turns 0
and if the input signal is OFF, the state turns 1.
Setting the Input to Latched Logic, the input state is toggled between 1 and 0 every time the input
signal of the respective digital input changes from OFF to ON.
In Inverse Latched Logic mode, the opposite behavior applies. The input state toggles between 1
and 0 every time the input signal changes from ON to OFF.

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In Frequency/RPM and PWM Duty Cycle modes “Minimum Range” and “Maximum Range”
setpoints are available. They are used when the input is selected as a control input for another
function block. They become the Xmin and Xmax values used in the slope calculations (see
Equation 1). When these values are changed, other function blocks using the input as a control
source are automatically updated to reflect the new X-axis values.
    
    
  
      
Equation 1. Linear Slope Calculations
In the case of the Output Control Logic function block, X and Y are defined as
Xmin = Control Input Minimum Ymin = “Output at Minimum Command”
Xmax = Control Input Maximum Ymax = “Output at Maximum Command”
In all cases, while X-axis has the constraint that Xmin < Xmax, there is no such limitation on the Y-
axis. Thus configuring “Output At Minimum Command” to be greater than “Output At Maximum
Command” allows the output to follow the control signal inversely.
1.3.3. Debounce Time
The Digital Input Debounce Time parameter is a useful parameter in cases where the digital input
signal coming into the controller is noisy. Figure 2 shows how the Debounce Time helps detect a
correct input signal.
Debounce Time
Input Remains OFF
Input = OFF
Input = ON
Change of state detected,
Debounce time started
Figure 2: Digital Input Debounce Time

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1.4. Digital Output Function Blocks
There are 2 digital outputs available in the ECU.
The Digital Outputs use various control sources to drive the output, each available from the listed
sources in Table 1. The output will be controlled by these sources in the following order: Override
Source, Enable Source, Control Source, Unlatch Source. Each output must have at least the
control source active to be functional.
The following sub sections will explain in more detail the functionalities and available
setpoints/parameters.
1.4.1. Digital Output Override
The Override Source will determine whether the relay output will be commanded by the Control
Source. This Source has a higher priority than the Enable Source.
There are two different Override Responses in which the Override signal can be used. These
responses are listed in Table 5, where the default value is highlighted.
Value
Meaning
0
Override When OFF
1
Override When ON
Table 5: Override Responses
When the Override Response is configured to Override When ON, the relay output will be
commanded according to the signal of the Control Source/Number by the Override State. If the
Override Response is set to Override When OFF, the relay output will be commanded according to
the signal of the Control Source/Number by the Override State. Table 6 shows the two possible
states for the Override Response.
Value
Meaning
0
Override State OFF
1
Override State ON
Table 6: Override State
In case of Override State OFF, the relay output switches to Normally Open. If Override State ON
is configured, the relay output changes to Normally closed.

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1.4.2. Digital Output Enable
The Enable Source will determine whether the relay output will be commanded by the Control
Source. There are six different Enable Responses in which the enable signal can be used. These
responses are listed in Table 7, where the default value is highlighted.
Value
Meaning
0
Enable When ON
1
Enable When OFF
2
Disable When ON
3
Disable When OFF
4
Enable When ON Else Keep State
5
Enable When OFF Else Keep State
Table 7: Enable Response
When the Enable Response is set to Enable When ON or Disable When OFF, the relay output will
be commanded according to the signal of the Control Source/Number and the Output Type only
when the signal of the Enable Source/Number is ON. Otherwise, the output is commanded to the
OFF state (Output Type selected).
Similarly, when the Enable Response is set to Enable When OFF or Disable When ON, the output
will be commanded according to the Control Source/Control Number and the Output Type only
when the signal of the Enable Source/Enable Number is OFF. Otherwise, the output is
commanded to the OFF state (Output Type selected).
In case the Enable Response is Enable When ON Else Keep State, the relay output will be
commanded according to the signal of the Control Source/Number and the Output Type only
when the signal of the Enable Source/Number is ON. If the Enable Source is OFF, the output will
keep the previous state.
Likewise, when the Enable Response is configured to Enable When OFF Else Keep State, the
relay output will be commanded according to the Control Source/Number and the Output Type
only when the Enable Source/Number is OFF. Otherwise, the relay output holds the previous
state.
A time delay for both states (ON, OFF) can be set by setting the Enable Response Delay
parameter to true. The values of these time delays can be set with the parameters Enable OFF
Delay and Enable ON Delay. In this case, the delays are valid for the enable state and the control
state.
1.4.3. Digital Output Control
When the output is being commanded by the Control Source, the selected Output Type
parameter determines what logic is used.
The Output Type parameter allows for flexibility in the response of the output. Table 8 shows the
options available for this parameter.