TriMark e-ASK UM26 User manual

e-ASK
electronic Access Security Keyless-entry
CAN Multiplex System
CAN Multiplex System
Installation & Instructions
(UM26 ~ 24324-02)

Table of Contents
Introduction ................................................................................... 1
e-FOB Operation and Features - Standard Mode ...................... 2
e-FOB Operation and Features - Cargo Mode ........................... 3
Standard e-PAD Operation and Features ................................... 4
Locking Doors With Keypad ....................................................... 4
Secure Operations ..................................................................... 4
Doorbell e-PAD Operation and Features .................................... 5
Locking Doors With Keypad ....................................................... 5
Doorbell Operation ..................................................................... 5
Secure Operations ..................................................................... 5
e-ASK CAN DIP Switch Configuration ................................... 6
DIP Switches 1-3 ........................................................................ 6
DIP Switches 4-6 ........................................................................ 6
Keypad DIP Switch Setting Configurations ................................ 6
Configuration A [SW 4 off / SW 5 off / SW 6 off] ........................................... 6
Configuration B [SW 4 off / SW 5 off / SW 6 on] ........................................... 6
Configuration C [SW 4 off / SW 5 on / SW 6 off]: ......................................... 7
Configuration D [SW 4 off / SW 5 on / SW 6 on]: ......................................... 7
Interior Switch DIP Switch Setting Configurations ..................... 7
Configuration A [SW 4 off / SW 5 off / SW 6 off]: .......................................... 7
Configuration B [SW 4 off / SW 5 off / SW 6 on]: .......................................... 7
Configuration C [SW 4 off / SW 5 on / SW 6 off]: ......................................... 7
Configuration D [SW 4 off / SW 5 on / SW 6 on]: .......................................... 8
DIP Switch 7 ............................................................................... 8
DIP Switch 8 ............................................................................... 8
Additional Keyless Entry System Features ............................... 9
Dome/Porch Light Activation ...................................................... 9
e-PAD Anti-tamper Deactivation Feature .................................. 9
e-GRAB Handle Lighting ........................................................... 9
Trim Pot Variable Resistor ......................................................... 9
Status LED ................................................................................. 9
Internally Controlled Door Locking and Unlocking ..................... 9
Lock and Unlock Confirmation ................................................... 10

Deactivate Lock Confirmation ................................................... 10
Door Ajar Warning ..................................................................... 10
Alarm ......................................................................................... 10
Timed Dome/Porch Light Activation .......................................... 11
Compartment Light Activation ................................................... 11
Auxiliary 1 Output Activation ..................................................... 11
Teaching Additional Transmitter FOBs ..................................... 11
Teaching Keypad New Authority/Access Codes ...................... 13
Assign New Access Codes ....................................................... 14
Troubleshooting .......................................................................... 16
About the “Yellow Programming Wire” ...................................... 16
CAN Error Diagnostic Codes .................................................... 17
CAN Communication Protocol Settings .................................... 18
CAN Communication Configuration .......................................... 19
e-ASK Doorbell Mode Configuraiton ......................................... 20
Setting the Keypad CAN Function Instance (Location) ............. 21
More eASK Hints ....................................................................... 22
Warrenty Information ................................................................. 23
Appendix A: Installation and Application Notes ..................... I
General Mounting Guidelines .................................................... I
Testing Inputs and Outputs ....................................................... I
Clean +12V Power and Ground ................................................ II
Appendix B: Drawing and Wiring Tables ................................. III
Connector Locations ................................................................. III
Table: Equivalent Connectors and Terminals ........................... III
Table: Pin Functions and Locations .......................................... IV

TriMark CAN RF Controller
Introduction
This manual provides the necessary information for the proper
installation and use of TriMark’s CAN e-ASK system including vehicle
module and keypad.
The nature of CAN multiplex communications mandates that at least 2
CAN-enabled devices must be connected via a CAN network in order
for any of the devices to function. Therefore, if this keyless entry
system is being installed into a vehicle that does not have a pre-existing
CAN network to connect into, the RF receiver MUST be installed with a
TriMark CAN-enabled keypad or e-GRAB handle.
The RF controller and FOB transmitters are shipped programmed.
After following installation instructions as shown in this manual, the
system will function as described.
1
CAN-enabled
e-GRAB Handle
CAN-enabled Keypad —
available vertical or horizontal

e-FOB Operation and Features - Standard Mode
Button Function
Lock Locks doors and arms security system.
Unlock Unlocks doors and disarms security system. Also
activates the dome light.
Panic Activates panic mode when pressed and held for 2
seconds.
* Auxiliary
Button
Auxiliary output. Possible assignment includes: interior/
exterior lighting, awning extension/retraction, gas cap
release, hood release, etc.
Panic button
Unlock button
* Auxiliary button
Lock button
Note:
 Only the unlocking function of the e-FOB remains while the
system detects that the engine is running—other functions are
deactivated.
2

e-FOB Operation and Features - Cargo Mode
Button Function
Entry Lock Locks entry door and arms security system.
Entry Unlock Unlocks entry door and disarms security system.
Also activates the dome light.
Cargo Lock Locks cargo doors and arms security system.
Cargo Unlock Unlocks cargo doors and disarms security system.
Also activates compartment lights.
Note:
 Only the unlocking function of the e-FOB remains while the
system detects that the engine is running—other functions are
deactivated.
Cargo Lock
Entry Unlock
Cargo Unlock
Entry Lock
3

Standard e-PAD Operation and Features
The e-PAD is shipped with default Authority and Access Codes. If the
OEM or dealer has not changed the default codes, the Authority and
Access Codes are:
Access code:
Authority code:
Locking Doors With Keypad
Press and hold down the (1 / 2) button for 1-2 seconds.
An Access Code is not needed to lock the doors.
Secure Operations
Entering a valid 5-digit Access Code provides a double-beep and
enables a secure operation. After entering an Access Code, the
keypad is enabled for 5 seconds and the next button pressed initiates
a secure operation, such as unlocking the doors.
Notes:
 The Authority Code does not allow for secure operations. It is
only used to assign access codes (see page 12 for information
on setting access codes).
 If an unassigned button is pressed, or no button is pressed,
within 5 seconds of a correctly entered Access Code, the
keypad reverts back to disabled state.
 If the keypad does not Double-beep after the 5th digit of your
entered Access Code, then you have not entered the correct
Access Code.
 The secure keypad operations are set depending on the system
configuration. See page 6 for more information.
Digit 1 Digit 2 Digit 3 Digit 4 Digit 5
1 / 2 3 / 4 5 / 6 7 / 8 9 / 0
Digit 1 Digit 2 Digit 3 Digit 4 Digit 5
7 / 8 7 / 8 7 / 8 7 / 8 7 / 8
4

Doorbell e-PAD Operation and Features
Access code:
Authority code:
Locking Doors With Keypad
Press and hold down the (1) button for 1-2 seconds. An
Access Code is not needed to lock the doors.
Door Bell Operation
The doorbell button sends a CAN message to the RF Controller
instantly when pressed. An Access Code is not necessary for the
doorbell.
Secure Operations
Entering a valid 5-digit Access Code provides a double-beep and
enables a secure operation. After entering an Access Code, the keypad
is enabled for 5 seconds and the next button pressed initiates a secure
operation, such as unlocking the doors.
Note:
 The Authority Code does not allow for secure operations. It is
only used to assign access codes (see page 12 for information on
setting access codes).
 If an unassigned button is pressed, or no button is pressed, within
5 seconds of a correctly entered Access Code, the keypad
reverts back to disabled state.
 If the keypad does not Double-beep after the 5th digit of your
entered Access Code, then you have not entered the correct
Access Code.
 The secure keypad operations are set depending on the system
configuration. See the next page for more information.
Digit 1 Digit 2 Digit 3 Digit 4 Digit 5
1 2 3 4 4
Digit 1 Digit 2 Digit 3 Digit 4 Digit 5
4 4 4 4 4
5

6
e-ASK CAN DIP Switch Configuration
DIP Switches 1-3:
The settings of DIP switches 1-3 define CAN address of the IO receiver
module. A unique address must be assigned when multiple modules
are used on a CAN
network. If only one
module is used on
network then all DIP
switches should be set
to ON position.
 DIP Switch 1: On
 DIP Switch 2: On
 DIP Switch 3: On
DIP Switches 4-6:
The setting of DIP switches 4-6 define configuration of the IO receiver
module. Each configuration provides different functionality for keypad
and interior switches. Most customers use default configuration D
setting. See configuration setting definitions.
Keypad DIP Switch Setting Configurations:
Entering a 5-digit access code enables the keypad. After entering the
Access Code, the next button pressed initiates a secure operation, such
as unlocking specific doors or another operation according to the
following lists:
Configuration A [SW 4 off / SW 5 off / SW 6 off]:
 Button (1 / 2) (1): Unassigned
 Button (3 / 4) (2): Unlocks all entry and compartment doors
 Button (5 / 6) (3): Unassigned
 Button (7 / 8) (4): Unassigned
 Button (9 / 0): Toggles Aux 1 output
Configuration B [SW 4 off / SW 5 off / SW 6 on]:
 Button (1 / 2) (1): Unlocks all entry door(s)
 Button (3 / 4) (2): Unlocks all entry and compartment doors
 Button (5 / 6) (3): Unassigned
 Button (7 / 8) (4): Unassigned
 Button (9 / 0): Toggles Aux 1 output

7
Configuration C [SW 4 off / SW 5 on / SW 6 off]:
 Button (1 / 2) (1): Unlocks all entry door(s)
 Button (3 / 4) (2): Unlocks all doors assigned to relay bank A
 Button (5 / 6) (3): Unlocks all doors assigned to relay bank B
 Button (7 / 8) (4): Unlocks all doors assigned to relay bank C
 Button (9 / 0): Unlocks all doors assigned to relay bank D
Configuration D [SW 4 off / SW 5 on / SW 6 on]:
 Button (1 / 2) (1): Unlocks all entry doors
 Button (3 / 4) (2): Unlocks all entry and compartment doors
 Button (5 / 6) (3): Unlocks all curb side compartment doors
(relay banks C-D)
 Button (7 / 8) (4): Unlocks all driver side compartment doors
(relay banks A-B)
 Button (9 / 0): Toggles Aux 1 output
Interior Switch Dip Switch Setting Configurations:
The following vehicle switch assignments of connector J1 define
functional assignment of interior switches. When the switch input is
grounded, its corresponding function is specified.
Configuration A [SW 4 off / SW 5 off / SW 6 off]:
 J1 pin 1: Unassigned
 J1 pin 2: Unassigned
 J1 pin 9: Unassigned
 J1 pin 10: Unlocks all doors
 J1 pin 11: Lock all doors
 J1 pin 12: Unassigned
Configuration B [SW 4 off / SW 5 off / SW 6 on]:
 J1 pin 1: Lock all compartment doors (banks A-D)
 J1 pin 2: Unlock all compartment doors (banks A-D)
 J1 pin 9: Unlock entry door(s)
 J1 pin 10: Unlock all doors
 J1 pin 11: Lock all doors
 J1 pin 12: Lock entry door(s)
Configuration C [SW 4 off / SW 5 on / SW 6 off]:
 J1 pin 1: Unlock bank A
 J1 pin 2: Unlock bank B
 J1 pin 9: Unlock bank D
 J1 pin 10: Unlock entry door(s)
 J1 pin 11: Lock all doors
 J1 pin 12: Unlock bank C

8
Configuration D [SW 4 off / SW 5 on / SW 6 on]:
 J1 pin 1: Unlock curb-side compartment doors (banks C-D)
 J1 pin 2: Unlock driver-side compartment doors (banks A-B)
 J1 pin 9: Unlock entry door(s)
 J1 pin10: Unlock all doors
 J1 pin 11: Lock all doors
 J1 pin 12: Lock entry door(s)
Note: Configuration D is the default.
DIP Switch 7:
The setting of DIP switch 7 defines the type of remote FOB transmitter,
either standard FOB or cargo FOB.
 Off: Standard FOB
 On: Cargo FOB
DIP Switch 8:
The setting of DIP switch 8 defines the type of CAN protocol, either RV-
C or SAE J1939. As of model year 2014, almost every CAN device
installed in RVs and not affiliated with engine control use RV-C. Power
must be cycled to the device after changes are made for those changes
to take effect.
 Off: RV-C
 On: SAE J1939

9
Additional Keyless Entry System Features
Dome/Porch Light Activation
The dome/porch light is activated for a timed duration (5-60 seconds)
whenever a keypad button is pressed or when system is unlocked from
FOB transmitter or vehicle switch. The time duration is dependent on
the trim pot setting. The dome/porch light is deactivated an engine-start
is detected, or entry doors are locked using a keyless device.
e-PAD Anti-tamper Deactivation Feature
After repeated attempts to enter correct code (20 button presses
without enabling), the keypad enters an inactive mode that disables
buttons for 1 minute. This helps prevent undesired access by entering
random codes. No beep will sound with button press while the system
is disabled.
e-Grab Handle Lighting
The grab handle is lit continuously with a circuit installed separately
from the rest of the keyless entry system The timing and control of that
light is determined by an outside circuit, but is typically tied to the
parking lights circuit or porch light circuit. The e-PAD back lighting is lit
with a button press and while training new access and authority codes.
Trim Pot Variable Resistor
The trim pot provides adjustable settings for timed outputs. Clock-wise
rotation increases activation time.
 Dome/porch light activation (5-60 second range).
 Auxiliary 1 output (0.5-5.0 minute range).
 Auxiliary 2 compartment lighting output (0.5-5.0 minute range).
Note:
 Trim pot setting is updated by the software every 30 seconds.
 Trim pot adjustment may not be observed immediately.
Status LED
LED flashes at power-up and can provide other troubleshooting
diagnostics codes. The LED can be seen by looking into the control
module through the cut out for the DIP switches.
Internally Controlled Door Locking and Unlocking
A pulse output provides locking and unlocking operation to the entry
doors and the compartment doors (banks A-D). The locking and
unlocking pulses have opposite polarities. Locking and unlocking
operations are activated via e-PAD, e-FOB, and vehicle switch inputs.

Lock and Unlock Confirmation
 Standard mode e-FOB: The headlights flash once and the horn
honks once with a lock command. On unlock, the headlights
flash twice.
 Cargo mode e-FOB: There is no unlock confirmation. The
headlights flash once and the horn honks once when either the
entry or compartment doors are locked. When both entry and
compartment doors are locked within 10 seconds, headlights
flash twice and the horn honks twice.
 Keypad: The headlights flash once with a lock command. On
unlock, the headlights flash twice.
 Locking and unlocking confirmation is deactivated while engine
is running.
Deactivate Lock Confirmation
The system defaults to confirmation ON with power-up. Horn and
headlight confirmation can be toggled off and on from the keypad.
1. Press and hold the (5 / 6) or (3) button for 5 seconds until the
keypad beeps.
2. Enter the Authority Code. The buzzer stays on.
3. Hold the (1 / 2) or (1) button for 5 seconds. A double-beep
sounds.
4. The ON/OFF status of confirmation output (lights and horn) is
toggled.
Door Ajar Warning
A triple siren chirp sounds if any compartment or entry door is open
when the entry and compartment doors are locked (security input
grounded). If a door is open, the alarm is not armed.
Alarm
After locking all doors, the system is armed. In cargo mode, both the
entry door and compartment doors must be locked within 10 seconds to
set the alarm. The alarm is activated when any entry door or
compartment door is opened, or by grounding the extra security input.
The extra security input could be connected to a shock sensor, motion
sensor or other sensing device. When alarm is triggered, the siren is
continuously activated and headlights flash for 1 minute.
To deactivate alarm mode:
 Unlock all doors via e-FOB transmitter.
 Unlock system via e-PAD or vehicle switch.
 Start the engine.
10

Outputs Single Lock
Confirmation
All Lock
Confirmation Alarm
Siren Not used Not used 1 minute or when shut off
Horn 1 chirp 2 chirps Not used
Headlights 1 flash 2 flashes 1 minute or when shut off
Outputs Unlock
Confirmation
Lock
Confirmation Alarm
Siren Not used Not used 1 minute or when shut off
Horn 1 chirp 2 chirps Not used
Headlights 1 flash 2 flashes 1 minute or when shut off
The following table describes audio/visual activations at various
conditions in standard mode.
The following table describes audio/visual activations at various
conditions in cargo mode.
Timed Dome/Porch Light Activation
The dome/porch light is activated upon pressing any keypad button or
by unlocking entry door via e-FOB transmitter. The activation duration is
controlled via trim pot. Starting the engine or locking the doors
deactivates the light.
Compartment Light Activation
Compartment lights are activated upon unlocking compartment doors
(bank A-D) or toggling vehicle switch. The activation duration is
controlled via trim pot. Starting the engine deactivates the light.
Auxiliary 1 Output Activation
Standard Mode: With proper wiring and system configuration, Aux 1
output can be activated with Button on e-FOB transmitter, via keypad,
or toggled with vehicle switch. The activation duration is controlled via
potentiometer. Starting the engine deactivates the output.
Teaching Additional Transmitter FOBs
There are 2 ways that the receiver can be put into e-FOB learn mode.
The first requires that a CAN keypad be connected to the network. This
option allows the module to be put into train mode without accessing the
module. The 2nd option requires access to the module. Up to (10)
11

Option 1 (CAN keypad connected to network):
1. Hold the (5 / 6) (3) button of keypad for 5 seconds. The keypad
will beep and the LEDs will flash.
2. Enter authority code. The buzzer stays on.
3. Hold (9 / 0) (DB) for 5 seconds. A double-beep plays.
4. The receiver module is now in e-FOB learn mode. (The LED
under the receiver enclosure will be blinking rapidly).
5. Next press lock button of each transmitter to be trained. (LED
stays solid for 2 seconds as each one is trained.) Press the
transmitter button for 0.5-2.0 seconds. A three second delay
must occur between each transmitter.
6. After 60 seconds of e-FOB button inactivity, or by simply
pressing any key on the keypad, 4 beeps will sound and the
module will return to normal operation.
Option 2 (no CAN keypad connected to network):
1. Remove power from module.
2. Move DIP switches 4-6 to the “ON” position.
3. Connect module to CAN network.
4. Connect power and GND to module (J1 P4,16 and J1 P7,19).
5. Wait about 5 seconds. LED will flash continuously.
6. Press any transmitter button for about 5 seconds until LED
pattern changes, then release. This trains the first transmitter.
7. Press any button of 2nd transmitter, LED pattern changes
immediately. This synchs the 2nd transmitter.
8. Repeat step 7 until all transmitters are trained.
9. Remove power from module.
10. Move DIP switches 4-6 to normal position and verify DIP
switches 1-3 are in proper position.
11. Reconnect power to module.
12. Verify that FOBs are synched to the CAN module. CAN module
needs to be connected to a valid CAN network (2+ modules on
network) or CAN must be disabled to verify functionality.
Notes:
 Up to 10 transmitters can be synched with a module. If a 11th
transmitter is added an earlier transmitter becomes invalid.
 All transmitters must be trained together. Training at least one
key fob after putting the module into train mode erases all
previous FOBs.
 If you place the system in learn mode and teach nothing, the
system will return to a normal mode in 60 seconds.
 The memory for codes will not be erased if power is removed
12

Teaching Keypad New Authority / Access Codes
IMPORTANT: READ ALL INSTRUCTIONS FOR EACH OPTION
AND ALL NOTES BEFORE BEGINNING TO KNOW WHAT TO
EXPECT DURING THE PROGRAMMING PROCESS.
The Authority Code has only one purpose: it grants the owner sthe
ability to set new Access Codes. The Authority Code must be
EXACTLY 5 digits long. Changing the Authority Code erases all
previous Access Codes and sets a new Access Code in memory
bank 1 that is the same as the new Authority Code.
Important: Authority and Access Codes should be different for the
greatest security.
Preparation:
1. Find the wiring harness coming out of the back of the keypad.
This is usually behind the passenger armrest next to the
entrance door. In some cases, the keypad may need to be
removed from the side of the vehicle to access the harness in
the correct location. See Page 16.
Programming:
2. With the keypad still
plugged in, short the
yellow wire to ground until
the keypad begins to beep
(tucking the stripped, loose
yellow wire into the back of
the connector with the
black wire works).
3. The keypad will beep for 3
seconds; remove the short
before the keypad stops
beeping. The keypad is
now in “Learn Mode.”
4. Enter a new 5-digit Authority Code (double chirps after each
button press). The keypad chirps 3 times after the 5th digit’s
entry.
5. Re-enter the new Authority Code for confirmation. The keypad
will chirp FOUR times for successful confirmation. A long beep
indicates a failure to change the code.
6. Test the new code to confirm it.
13

14
My New Authority Code
Digit 1 Digit 2 Digit 3 Digit 4 Digit 5
The following area can be used to document the new Authority Code:
Notes:
 While in “Learn Mode,” each button push provides a double-
chirp and the backlight flashes.
 The authority code is to be controlled by individuals (owners of
vehicle, fleet manager, etc.) who manage the distribution of
access codes to vehicle users.
 The authority code should be changed when the vehicle is
sold.
 The authority code does not enable secure functions (lock/
unlock doors, etc.)—it is only used to assign access codes.
 Doorbell systems only allow codes using buttons 1-4 and
provides memory for 4 unique access codes.
 The keypad automatically leaves “Learn Mode” when the new
code is set.
Assign New Access Codes
The Access Codes are used for secure functions, such as unlocking
doors. The Access Codes must be EXACTLY 5 digits long. With a
valid Authority Code, a new Access Code can be programmed with
the following instructions.
Programming:
1. Press the (5 / 6) or (3) button for 5 seconds until the keypad
beeps. The backlighting of the keypad will flash indicating the
keypad is in “Learn Mode.”
2. Enter the 5-digit Authority Code (see page 4 for the code).
 If you enter an INCORRECT Authority Code, the keypad
will beep for 1 second, and leave “Learn Mode.”
 If you enter a CORRECT Authority Code, the keypad will
provide a constant beep that will only stop after you have
defined a memory bank to store the new Access Code.

15
Memory # User Name Digit 1 Digit 2 Digit 3 Digit 4 Digit 5
1/2 (1)
3/4 (2)
5/6 (3)
7/8 (4)
9/0
3. Press and release the button that corresponds to the memory
bank. For example, press (1 / 2) or (1) button for Memory #1
and press (3 / 4) or (2) button for Memory #2. During this
activity you are choosing 1 of 5 (4) memory banks.
4. Enter a new 5-digit Access Code. The keypad chirps 3 times
after the 5th digit’s entry.
5. Re-enter the new Access Code for confirmation. The keypad
will chirp 3 times after a successful confirmation. A long beep
indicates a failure to change the code.
6. Test the new code to confirm a successful change.
Repeat process to assign additional Access Codes to different
memory slots.
Notes:
 Up to 5 (or 4 for doorbell keypads) different Access Codes can
be assigned at any time. As additional Access Codes are
defined, pre-existing Access Codes are overwritten. For
example, if a new Access Code is assigned to Memory #3, the
previous Access Code in Memory #3 is no longer valid.
 If an error is made at any point, or if time runs out, the keypad
will exit “Learn Mode,” provide a 1-2 second beep, and not
change anything.
The following area can be used to document the new Access Code
assignments:

16
Troubleshooting
The keypad’s “Yellow Programming Wire”:
In order to complete many higher-level reprogramming tasks, access
to the keypad’s “yellow programming wire” is required. Access to this
wire is usually intentionally restricted and difficult in an effort to detract
unauthorized manipulation of the security system. Typically, a vehicle
manufacturer will provide an access panel inside the vehicle to allow
users with access to the inside of the vehicle relatively unobstructed
access to the harness. Unfortunately, this is not always the case, and
some vehicles require the keypad to be completely removed from the
vehicle to gain access to the harness at the correct location.
Depending on the model of keypad that is installed on the vehicle, the
yellow programming wire will be located in one of two places.
1. ON EMBEDDED KEYPADS WITH A BLACK
BEZEL (22636-xx)
These keypad are multi-function keypads
with support for many operating modes. For
the purposes of this CAN system manual,
only the CAN modes are discussed. This
keypad has two wire harnesses; one is a 4-
pin CAN connector, the other is a 9-pin
discrete signal connector. In these keypads,
the “yellow programming wire” can be found
securely mounted in the 9-pin discrete signal
connector.
2. ON CHROME e-GRAB CAN-ENABLED KEYPADS (24295-xx)
These keypads have a more restricted level of function support
because of the lack of space within the e-GRAB base. One
consequence of this restriction is being limited to only one
harness coming from the keypad. Since the 9-pin discrete signal
connector is not present on
these keypads, the “yellow
programming wire” does not
have a location to be securely
mounted. Instead, the “yellow
programming wire” is drawn
through the convoluted
sheathing that protects the
CAN wire harness, and then
looped around and tucked
back into the sheathing. While this does protect the wire from
being unintentionally grounded, it can also be difficult to find
during troubleshooting and reprogramming.

17
CAN Error Diagnostic Codes:
In many cases, when a problem is detected with the CAN bus, one or
both TriMark CAN-enabled devices will announce an error. Similar
codes are used with CAN vehicle module and CAN keypad. The
keypad uses back lighting and buzzer for announcing codes while the
vehicle module uses an internal red LED.
1. At power up, the CAN devices will attempt to claim their preferred
network address on the CAN bus. After this, they will announce a
successful power-up using either the internal LED or a buzzer and
backlighting.
This “long announcement" communicates a CPU reset and why:
 One 1-second announcement = normal power on
 Two 1-second announcements = watchdog timer reset the
CPU (this indicates a software bug)
 Three 1-second announcements = brownout reset. The
power supply fell below the 2.0V requirement momentarily.
2. After the long announcement, a series of "short announcements"
indicate other errors that may have occurred:
 Two short announcements = CAN bus error. This means
there is an electrical problem with the CAN bus (possibly a
problem with bus termination), or simply that the device
reporting this error is the only node attached to the bus. If
there is intentionally only one CAN-enabled device on the
network, CAN communication must be disabled for normal
operation.
 Three short announcements = the device reporting this
error couldn't claim its preferred CAN address. This is
probably because another device on the bus is set to the
same function instance. This is considered a fatal error so
the device will reset itself and try again.
3. For some problems, the keypad provides five short beeps followed
by a pause to indicate a CAN bus error. Make sure that both
network wires are intact and connected to all TriMark CAN-
enabled devices.