AXIOMATIC AX141120 User manual

USER MANUAL UMAX141120
Version 1B
1 Universal Input, Dual CAN
RTC Controller with SAE J1939
USER MANUAL
P/N: AX141120

UM AX141120 Version 1B2-53
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 The Axiomatic Electronic Assistant (A 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)

UM AX141120 Version 1B3-53
TABLE OF CONTENTS
1. GENERAL INFORMATION ...................................................................................................................................... 5
1.1. INTRODUCTION TO AX141120 FEATURES.................................................................................................................. 5
1.2. J1939 NETWORK –DIAGNOSTIC BROADCAST ........................................................................................................... 5
1.3. CONTROL SOURCES ................................................................................................................................................. 6
1.4. REAL TIME CLOCK FUNCTION BLOCK........................................................................................................................ 6
1.4.1. RTC Enable Time and Date Transmission and Reception ............................................................................................. 6
1.4.2. RTC Enable Source and Number for Date and Time Setting ........................................................................................ 7
1.4.3. RTC Enable Response for Date and Time Setting ......................................................................................................... 7
1.4.4. Actual Time and Date ................................................................................................................................................... 7
1.5. UNIVERSAL INPUT FUNCTION BLOCKS ....................................................................................................................... 8
1.5.1. Universal Input Type .................................................................................................................................................... 9
1.5.2. Universal Input Range .................................................................................................................................................. 9
1.5.3. Universal Input Analog Filter........................................................................................................................................ 9
1.5.4. Universal Input Error and Range .................................................................................................................................. 9
1.5.5. Universal Input Digital Input Parameters................................................................................................................... 10
1.5.6. Universal Input Frequency/PWM Parameters ........................................................................................................... 11
1.5.7. Universal Input Data Filter ......................................................................................................................................... 11
1.5.8. Universal Input Diagnostic Parameters...................................................................................................................... 12
1.6. MISCELLANEOUS .................................................................................................................................................... 12
1.7. DIAGNOSTICS ......................................................................................................................................................... 12
1.8. CONSTANT DATA.................................................................................................................................................... 14
1.9. MATH FUNCTION BLOCK......................................................................................................................................... 14
1.10. PROGRAMMABLE LOGIC FUNCTION BLOCK ........................................................................................................... 15
1.11. LOOKUP TABLE FUNCTION BLOCK ........................................................................................................................ 16
1.12. CONDITIONAL BLOCK ........................................................................................................................................... 17
1.13. SET /RESET LATCH FUNCTION BLOCK.................................................................................................................. 19
1.14. CAN TRANSMIT FUNCTION BLOCK........................................................................................................................ 19
1.15. CAN RECEIVE FUNCTION BLOCK .......................................................................................................................... 20
1.16. VEHICLE IDENTIFICATION NUMBER (VIN) FUNCTION BLOCK ................................................................................... 21
1.17. LED FUNCTION BLOCK......................................................................................................................................... 21
2. OVERVIEW OF J1939 FEATURES ....................................................................................................................... 23
2.1. INTRODUCTION TO SUPPORTED MESSAGES............................................................................................................. 23
2.2. J1939 NAME,ADDRESS AND SOFTWARE ID............................................................................................................ 24
2.2.1. J1939 Name................................................................................................................................................................ 24
2.2.2. ECU Address ............................................................................................................................................................... 24
2.2.3. Software Identifier ..................................................................................................................................................... 25
3. ECU SETPOINTS ACCESSED WITH THE AXIOMATIC ELECTRONIC ASSISTANT ........................................ 26
3.1. J1939 NETWORK SETPOINTS.................................................................................................................................. 26
3.2. REAL TIME CLOCK SETPOINTS................................................................................................................................ 26
3.3. UNIVERSAL INPUT SETPOINTS ................................................................................................................................. 27
3.4. MISCELLANEOUS SETPOINTS .................................................................................................................................. 28
3.5. DIAGNOSTIC SETPOINTS ......................................................................................................................................... 30
3.6. CONSTANT DATA LIST SETPOINTS .......................................................................................................................... 30
3.7. MATH FUNCTIONAL BLOCK SETPOINTS ................................................................................................................... 32
3.8. PROGRAMMABLE LOGIC BLOCK SETPOINTS ............................................................................................................ 34
3.9. LOOKUP TABLE SETPOINTS .................................................................................................................................... 36
3.10. CONDITIONAL BLOCK SETPOINTS.......................................................................................................................... 38
3.11. SET-RESET LATCH BLOCK ................................................................................................................................... 39
3.12. CAN TRANSMIT SETPOINTS .................................................................................................................................. 39
3.13. CAN RECEIVE SETPOINTS .................................................................................................................................... 41
3.14. VEHICLE IDENTIFICATION SETPOINTS..................................................................................................................... 42
3.15. LED SETPOINTS................................................................................................................................................... 43
4. REFLASHING OVER CAN WITH THE AXIOMATIC ELECTRONIC ASSISTANT BOOTLOADER.................... 45
4.1. PREREQUISITES...................................................................................................................................................... 45

UM AX141120 Version 1B4-53
4.2. RE-FLASHING PROCEDURE ..................................................................................................................................... 45
5. INSTALLATION INSTRUCTIONS ......................................................................................................................... 50
6. TECHNICAL SPECIFICATIONS............................................................................................................................ 51
7. VERSION HISTORY............................................................................................................................................... 53

UM AX141120 Version 1B5-53
1. GENERAL INFORMATION
1.1. Introduction to AX141120 Features
The 1UIN-2CAN-RTC electronic control unit (ECU) is designed to provide a simple interface for
Real Time Clock and Universal Input over a Dual J1939 CAN Network, to be used in an industrial
environment. The hardware supports 1 Universal Input.
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 3. The Axiomatic EA communicates
with the controller over J1939 CAN port#1 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 CAN port #1 using the 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.
1.2. J1939 Network – Diagnostic Broadcast

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Diagnostic messages are triggered by the internal function blocks and then broadcast 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 shows the configuration of this feature
by using the Axiomatic Electronic Assistant tool.
1.3. 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
Universal Input
[1]
2
CAN Receive
[1…5]
3
Constant Data
[1…4]
4
Math Block
[1…4]
5
Programmable Logic Block
[1…2]
6
Lookup Table
[1…6]
7
Conditional Logic Block
[1…10]
8
Set-Reset Latch
[1…3]
9
RTC Seconds
[1...60]
10
RTC Minutes
[1...60]
11
RTC Hours
[1...24]
12
RTC Days
[1...32]
13
RTC Years
[1...100]
14
Transmission of PGN 54528
[1…1]
15
Reception of PGN 54528
[1…1]
Table 1: Control Sources
While these sources are available for all functional blocks, it is not recommended to use Constant
Data as a source in the Set-Reset Latch block. Additionally, it is recommended to set the
Response type as “Jump To” for the Lookup Table if it is used as a control source for the Real
Time Clock or LED. When the Lookup table is an output of the Programmable Logic, and the
Programmable Logic controls the RTC or LED, the Response Type should also be set to “Jump
To”.
When the Transmission of PGN 54528 is set as a control source, the state will be active for the
next 100ms after the message has been transmitted. Also, when the Reception of PGN 54528 is
set as a control source, the state will be active for the next 500ms upon receiving the message.
1.4. Real Time Clock Function Block
The Real Time Clock of the controller can be configured via CAN. The RTC can be used as a
control source for all available logic blocks. The subsection below explains the functionality and
available parameters in more detail.
1.4.1. RTC Enable Time and Date Transmission and Reception

UM AX141120 Version 1B7-53
The Enable Time and Date PGN 54528 transmission and Enable Time and Date PGN 54528
reception parameters allow to set on which CAN interface transmission and reception will happen.
The data transmitted is set according to the SAE J1939-71 standard. The possible options are
listed in the Table 2. By default, both, CAN #1 and CAN #2 are enabled. The unit also supports the
Time/Date PGN (65254) by populating a Time/Date CAN message. Refer to the Section 2 and
PGNs and to J1939-71 Standard for the detailed information.
Value
Meaning
0
Disabled
1
Only to CAN #1
2
Only to CAN #2
3
To Both CAN Interfaces
Table 2: Options for Reception and Transmission
1.4.2. RTC Enable Source and Number for Date and Time Setting
The Real Time Clock can be controlled by all control sources mentioned in Table 1. The device
constantly checks the condition of the control source and reacts according to the value set in
Enable Response for Date and Time Setting setpoint. For example, if Enable Source for Date
and Time Setting is set to RTC Minutes and Enable Number for Date and Time Setting is set to
10, the RTC will respond accordingly on the 10th minute of each hour (ex. 01:10:00, 02:10:00, etc.).
The default option is To Both CAN Interfaces.Control sources allow to configure the unit in an
flexible and application specific way.
1.4.3. RTC Enable Response for Date and Time Setting
The Enable Response for Date and Time Setting has two options listed in Table 3. These
options define the behavior of the unit during the triggering of the control source. First option
enables both CAN Interfaces for transmission when control event happens. Second option works
in an opposite way. By default, the Enable When On is set.
Value
Meaning
0
Enable When On
1
Enable When Off
Table 3: Enable Response Types
1.4.4. Actual Time and Date
Beside transmission and reception of the time and date the AX141120 shows the actual time and
date under Real Time Clock setpoint block. The time is shown in the following format: HH:MM:SS
and the date is shown as YYYY/MM/DD. All these parameters are not configurable and presented
in a read only format. To refresh the time shown, the page in the Axiomatic EA should be refreshed
or values under Enable Time and Date PGN 54528 Transmission or Enable Source for Date
and Time Transmission should be altered.
Additionally, the Time Zone setpoint is configurable. The ECU supports 37 different time zones
starting from UTC-12 to UTC+14. The device updates this value when the time zone changes via
CAN or is changed manually. The change of the Time Zone setpoint will alter the transmitted time
and date respective to the UTC being set. Receiving the CAN Time/Date Adjust message will reset

UM AX141120 Version 1B8-53
the time shown along with a set time zone, so the ECU will consider the received time as already
updated to the given time zone and will not recalculate it. The list of all time zones available is
listed in Table 4below.
Value
Meaning
0
UTC-12
1
UTC-11
2
UTC-10
3
UTC-9:30
4
UTC-9
5
UTC-8
6
UTC-7
7
UTC-6
8
UTC-5
9
UTC-4
10
UTC-3
11
UTC-2:30
12
UTC-2
13
UTC-1
14
UTC+0
15
UTC+1
16
UTC+2
17
UTC+3
18
UTC+4
19
UTC+4:30
20
UTC+5
21
UTC+5:30
22
UTC+5:45
23
UTC+6
24
UTC+6:30
25
UTC+7
26
UTC+8
27
UTC+8:45
28
UTC+9
29
UTC+9:30
30
UTC+10
31
UTC+10:30
32
UTC+11
33
UTC+12
34
UTC+12:45
35
UTC+13
36
UTC+14
Table 4: List of Supported Time Zones
1.5. Universal Input Function Blocks
The universal input of the controller can be configured as a variety of different input types. The
input can be used as control sources for CAN output, as well as other logic blocks. The sub

UM AX141120 Version 1B9-53
sections below explain in more detail the functionality and available setpoints/parameters of the
universal input.
1.5.1. Universal Input Type
The Input Type parameter allows the user to select how the controller responds to the behaviour
of the input. Table 5 shows the different options for each input.
Value
Meaning
0
Input Disabled
1
Voltage Input
2
Current Input
3
Digital Input
4
Frequency Input
5
PWM Input
Table 5: Universal Input Types
1.5.2. Universal Input Range
The Input Range parameter is used to specify the expected range of Voltage or Current inputs. It
is disabled for other input types. Table 6 shows the options available for this parameter when a
Voltage Input is selected, and Table 7 show the options for a Current Input.
Value
Meaning
0
0 - 5V Analog Input
1
0 - 10V Analog Input
Table 6: Voltage Input Ranges
Value
Meaning
0
0 - 20mA Analog Input
1
4 - 20mA Analog Input
Table 7: Current Input Ranges
1.5.3. Universal Input Analog Filter
The Analog Filter parameter is only applicable when a voltage or a current type is being measured.
In these cases, the ADC will automatically filter as per Table 8, and is set for 50Hz noise rejection
by default.
Value
Meaning
0
Input Filter Off
1
Filter 50Hz
2
Filter 60Hz
3
Filter 50Hz and 60Hz
Table 8: Analog Filter
1.5.4. Universal Input Error and Range

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Each Input can have different Input Ranges which can be configured. The Range Min and Range
Max parameters are used to set the range for the input. The Error Min and Error Max parameters
are used to set when the accompanying diagnostic message will be triggered.
1.5.5. Universal Input Digital Input Parameters
If the Input is configured as a Digital Input, the following setpoints become available to help
configure the input.
The Pull Up/Down parameter is used to change the configuration of internal resistors with the
following options.
Value
Meaning
0
No Pull
1
Pull Up Network
2
Pull Down Network
Table 9: Digital Input Pull Up/Down
The Logic Type parameter is used to determine how the input is received when configured as a
Digital Input.
Value
Meaning
0
Input Not Implemented
1
Normal Logic
2
Inverse Logic
3
Latched Logic
4
Inverse Latched Logic
Table 10: Digital Input Logic Type
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.
The Digital Input Debounce Time parameter is a useful parameter in cases where the digital input
signal coming into the controller is noisy. Figure 1 shows how the Debounce Time helps detect a
correct input signal.