MoTeC C125 User Manual
MoTeC C125 User Manual
Copyright © 2014 – MoTeC Pty Ltd
The information in this document is subject to change without notice.
The supplied product may differ slightly to the images
While every effort is taken to ensure correctness, no responsibility will be taken for the
consequences of any inaccuracies or omissions in this manual.
Version 2.0, June 2014
C125 User Manual MoTeC
Contents
Introduction .............................................................................. 6
Features ................................................................................................ 6
System Overview .................................................................................. 8
Typical devices used with the Display Logger ........................... 8
C125 Race Kits ....................................................................... 12
C125 Race Display Kit ........................................................................ 12
C125 Race Logging Kit ....................................................................... 12
Installing the C125 Terminated Loom ................................................ 13
Installing the C125 Input Loom ........................................................... 14
Installing the OBD-II To Display Loom ............................................... 15
Installing the CAN ECU To Display Loom .......................................... 16
Installing the RS232 ECU To Display Loom ....................................... 18
Installation .............................................................................. 20
Mounting and Wiring ........................................................................... 20
Connecting Devices ............................................................................ 21
Inputs – Requires I/O Upgrade ................................................ 21
Outputs – Requires I/O Upgrade .............................................. 23
Communications ....................................................................... 24
Connecting Devices Examples ................................................ 25
Software Installation ........................................................................... 26
C125 Dash Manager Software ................................................. 26
i2 Data Analysis Software ........................................................ 27
Connecting the Display Logger to a PC ................................... 27
Configuration ......................................................................... 29
Configuration Sequence ..................................................................... 29
Configuration File ............................................................................... 29
Channels ............................................................................................. 30
Channel Properties ................................................................... 32
Selecting Channels .................................................................. 33
Connections ........................................................................................ 35
Configuring Inputs (optional) .................................................... 35
MoTeC C125 User Manual
Configuring Outputs (optional) ................................................. 35
Configuring Communications ................................................... 35
Calculations ........................................................................................ 36
Special Calculations ................................................................. 36
General Purpose Calculations ................................................. 36
Functions ............................................................................................ 37
Data Logging (optional) ............................................................ 37
Display ...................................................................................... 41
Other Functions ........................................................................ 48
Operation ................................................................................ 49
Retrieving the Logged Data ................................................................ 49
Sending and Retrieving Configuration Files ....................................... 49
Zeroing Sensors ................................................................................. 49
Checking Operation ............................................................................ 50
Configuration Versions and Updating ................................................. 50
Upgrading the Display Logger .................................................. 51
Password Protection ................................................................ 51
Other Online Activities .............................................................. 51
Appendices ............................................................................ 53
Specifications ...................................................................................... 53
Display Logger Upgrades ................................................................... 55
Characteristics .................................................................................... 56
Input Characteristics ................................................................. 56
Output Characteristics .............................................................. 61
C125 Pin List by Pin Number ............................................................. 62
C125 Pin List by Function ................................................................... 63
Mounting Dimensions ......................................................................... 65
Wiring .................................................................................................. 66
Connector ................................................................................. 66
Wire Specification ..................................................................... 66
PC Connection ......................................................................... 67
CAN Bus Wiring Requirements ................................................ 68
C125 Display Logger to ECU wiring (RS232) .......................... 69
C125 Loom Wiring .................................................................... 70
C125 User Manual MoTeC
Update Rate Summary ....................................................................... 71
Command Line ................................................................................... 73
CAN Bus Bandwidth Limit .................................................................. 75
Comms Error Codes ........................................................................... 76
Windows Keyboard Shortcuts ............................................................ 79
Glossary .............................................................................................. 84
MoTeC C125 User Manual
6 Introduction MoTeC
Introduction
C125 - Club Display Logger
The C125 is a sophisticated display and powerful control device combined in
one lightweight unit. With the addition of a Data Logging upgrade it becomes
a fully programmable data logger with 120 MB memory (see Display Logger
Upgrades
data channels, warning alarms, lap times, fuel calculations, minimum corner
speeds, maximum straight speeds and more. The C125 performs
calculations, acquiring data from other devices such as an ECU, another
Display Logger and input expander modules, which enable it to log a
multitude of inputs.
). The screen layout is fully configurable to display a multitude of
Features
All MoTeC Display Loggers come with a range of features as standard and
several options available as upgrades to customise and grow the system.
These additional features are activated through a simple password system,
and can be purchased at any time when you need them.
See Display Logger Upgrades
General
• All-in-one display, logger and controller eliminates the need for separate
devices
• Suitable for bikes, cars, marine and industrial applications
• Compact, durable and reliable unit
• Supports Wideband Lambda from MoTeC PLMs or LTCs, using Bosch
LSU or NTK UEGO 5 wire sensors
• Straightforward control for lights, fans, pumps (optional)
• Easily integrated with MoTeC CAN based devices, e.g. Power
Distribution Modules, expanders, GPS, shift lights and ECUs
.
Logging and Analysis
• Optional internal data logging of 120 MB
• Fast download via Ethernet
• Data analysis with i2 Standard or optional i2 Pro software
• Accommodates over 300 channels derived from a mixture of analogue
and digital inputs, RS232 and CAN data channels
MoTeC Introduction 7
• Configurable to use sensors from some existing engine management
systems
Display
• Colour TFT LCD, anti-reflective
• 12 customisable layout options
• Customisable measurement units and warnings
• Configurable dial, sweep or bar graph can display any channel with
optional peak, hold and shift markers
• 48 user-defined alarms, e.g. Low Oil Pressure, Low Fuel, Fast Lap
• Programmable overrides - particularly useful for showing values such as
lap times
• Three programmable modes or 'pages' with customisable labels ensure
the driver is shown only the most relevant information at any given time
• Adjustable backlight
Software
• Windows-based software designed for setup and management of the
display and data logging system
• The user can generate a configuration file offline and send the
completed configuration to the Display Logger
• Calculations including lap times, lap gain/loss, speed and distance, fuel
prediction
• Monitor active channels—view all channels live
• Sensor zeroing
• Details editor including event, venue and vehicle details
• Extensive Help screens
• To access the newest software features you can download the latest
version from www.motec.com/downloads
8 Introduction MoTeC
Compatibility
• MoTeC ECUs: M4, M48, M8, M84, M400, M600, M800 and M880
• MoTeC accessories: E816, E888, SLM, PLM, LTC, BR2, PDM, GPS,
PDM, etc.
• Many non-MoTeC ECUs and other devices
Required Accessories
See to Connecting the Display Logger to a PC.
• #61225 Network Cable RJ45 1.5 Metre, or other standard ethernet cable
Optional Kits and Accessories
• Any one of the following:
o 18031 Race Display Kit
o 18032 Race Logging Kit
• 62204 C125 Race Loom Terminated
• 61259 C125 Input Loom
• 61197 OBD-II To Display Loom
• 61198 CAN ECU To Display Loom
• 61199 RS232 ECU To Display Loom
• 41304 GPS L10 10Hz
• 61221 Two Button Loom
System Overview
The Display Logger offers extensive possibilities to integrate with ECUs,
peripheral devices and accessories to form a complete solution that powers,
controls, logs, monitors and communicates virtually any automotive
parameter.
Typical devices used with the Display Logger
ECUs
The C125 Display Logger can be connected to all MoTeC engine
management systems and some other manufacturers' ECUs either via CAN,
RS232 or OBD-II. This avoids duplication of sensors and allows the Display
Logger to display and log many ECU parameters.
The typical update rate is about 20 times per second for RS232 and 50 times
per second for CAN, but is less from OBD-II.
MoTeC Introduction 9
Sensors
The optional Display Logger inputs* can be connected to a wide variety of
sensors. Different types of sensors are available to suit different types of
measurements, for example: temperature, pressure, movement etc.
Sensors convert a physical measurement (e.g. pressure) into an electrical
signal (e.g. volts).
Different types of sensors generate different types of electrical signals. For
example, most temperature sensors convert the temperature into a variable
resistance which may be measured by an Analogue Temperature input.
However most wheel speed sensors generate a variable frequency signal
which must be connected to either a Digital input or a Speed input.
*To use these inputs, you will need to add the #29600 C125 I/O enable.
Expanders
E888/E816
The C125 fully supports two E888 or E816 Expanders allowing expansion
of the number of inputs and outputs
Accessories
BR2
A BR2 Beacon Receiver may be connected to the C125, which allows the
Display Logger to calculate lap times for display and to provide lap
information for the data analysis software.
SLM-C
The SLM-C Club Shift Light Module can be used for shift lights, warning
lights and other driver alerts.
The SLM-C includes 8 coloured LEDs that can be programmed to display
in a pre-defined pattern.
GPS
The C125 Display Logger supports many GPS (Global Positioning
System) devices allowing it to record speed and position information as
well as providing lap timing.
This information can be used in the i2 data analysis software to create
track maps, and plot and compare driven lines.
A 10 Hz GPS is supplied as part of the C125 Race Kits.
10 Introduction MoTeC
High Definition Video
MoTeC brings true high definition to motorsport with its new HD Video
Capture System. The HD-VCS provides superior quality video and
numerous features designed specifically for the racing environment.
Features include:
• Genuine High Definition with 1080p @ 30 frames per second
• Automatic Start/Stop, eliminating the possibility of drivers forgetting to
turn it on
• 12 V power direct from the vehicle - no batteries to recharge
• Live gauges
• Over 5 hours of recording at 1080p
• Records to removable storage up to 32 GB
• Video can be played directly from the card
• Automatic CAN Synchronisation with data in i2 (available late 2013)
• Compact, lightweight recording unit
automatically recorded on the video
Lambda Measurement
PLM
The PLM Professional Lambda Meter measures the air fuel ratio over a
wide range of mixtures with fast response time. It is compatible with Bosch
LSU and NTK UEGO Lambda sensors and displays the Lambda readings
via the integrated display.
LTC/LTCD/LTC NTK
LTC Lambda to CAN modules provide accurate Lambda measurements
even when the exhaust gas temperature changes rapidly. They are
compatible with the Bosch LSU 4.9 / NTK Lambda sensors and transmit
Lambda readings via the CAN bus.
Remote Displays
A remote display device may be connected to the C125 to allow display of any
value that the Display Logger calculates, such as lap times and warning alarm
messages.
The Club Display Logger supports D153, D175 displays which are connected
via CAN.
MoTeC Introduction 11
PDMs
Power Distribution Modules are designed to replace conventional relays,
fuses and circuit breakers by providing electronically switched power to the
various electrical systems in the vehicle. This simplifies wiring and switch
requirements, while increasing reliability.
Full diagnostic information, including output currents and error status, can be
transmitted via CAN to the Display Logger.
Several models are available to suit vehicles with different complexity ranging
from 15 to 32 outputs and 12 to 23 inputs.
Other Devices
Many other devices can be connected to the C125 Display Logger.
12 C125 Track Kits MoTeC
C125 Race Kits
C125 Race Display Kit
The C125 Race Display Kit is a complete plug and play solution. All wires are
labelled and terminated, ensuring a fast, easy installation.
The Race Display Kit will allow you to perform the following functions and
more with your C125:
• Lap timing
• Shift lights
• Warnings
• Multiple page layouts
• ECU connection
• Display of sensor values
Kit contents:
• 18029 – C125 COLOUR DISPLAY LOGGER
• 61260 – C125 ACCESSORY KIT containing:
o 41304 – GPS L10 10Hz
o 61221 – TWO BUTTON LOOM
o 61225 – NETWORK CABLE RJ45 1.5 METRE
o 62204 – C125 RACE LOOM TERMINATED
C125 Race Logging Kit
The Race Logging Kit is a complete plug and play solution with data logging.
All wires are labelled and terminated, ensuring a fast, easy installation.
The Race Logging Kit will allow you to perform the following functions and
more with your C125:
• Lap timing
• Track Mapping
• Data Logging
• Shift lights
• Warnings
• Multiple page layouts
• ECU connection
MoTeC C125 Track Kits 13
• Display of sensor values
• Driver analysis
• Engine performance measurement
• Data analysis using MoTeC’s i2 software
Kit contents:
• 18029 – C125 COLOUR DISPLAY LOGGER
• 29618 – C125 Logging upgrade 120MB
• 61260 – C125 ACCESSORY KIT containing:
o 41304 – GPS L10 10Hz
o 61221 – TWO BUTTON LOOM
o 61225 – NETWORK CABLE RJ45 1.5 METRE
o 62204 – C125 RACE LOOM TERMINATED
Installing the C125 Terminated Loom
The C125 has an optional terminated loom that is pre-configured to get the
most out of your Display Logger. This loom plugs directly into the back of the
C125, and has labelled wires for each of the parts that come with the Race
Kit. The loom has these connections:
• Power - Connect to a 12 - 32 V power source and ground with a 5
ampere fuse. When using the C125 Race kits, use the cigarette
lighter adapter.
• GPS - Ensure that you connect a compatible 5 V GPS unit only to the
lead labelled “GPS”. Plugging a GPS into the Accessories lead will
damage the GPS.
• Buttons - Plug in the button loom as supplied with the kit for Mode,
Alarm Acknowledge and Next Line functionality.
• Accessories – Use
product to the C125, such as LTC, expander, HD-VCS
• ECU - ECU communications are sent to the C125 via this connector.
Terminated looms are available for OBD-II, M84, MoTeC ‘Hundred
Series’ ECUs and RS232 (M4, M48 and other brands).
• Ethernet - For communications between your Dash and a PC for
configuration.
this lead to connect a MoTeC CAN based
14 C125 Track Kits MoTeC
Installing the C125 Input Loom
The C125 Input loom is a fast way to add sensors to your C125 when you
have added the I/O upgrade. Following these instructions, you can quickly
add wiring for 6 AVs, 2 ATs, 2 Digital and 3 Speed inputs to your vehicle’s
loom.
Installation Process
1. Connect DTM 4 pin male of the Input loom to GPS DTM 4 pin female
connector of the main loom.
2. Connect DTM 4 pin female connector of the Input loom to the GPS
connector. The purpose of this connection is to supply 5 V and 0 V to the
sensors
3. Remove the main 34 pin C125 connector from the back of the C125.
4. Unlock the C125 connector by pushing in the long white locking tab.
5. Remove white plugs from pins 3, 4, 5, 6, 12, 13, 16, 17.
6. Insert pinned wires into the C125 connector as follows:
.
• AV1 – blue wire into pin location 3
• AV2 – green wire into pin location 4
• AV3 – purple wire into pin location 5
• AV4 – grey wire into pin location 6
• AV5 – yellow wire into pin location 12
• AV6 – white wire into pin location 13
• AT1 – brown wire into pin location 16
• AT2 – orange wire into pin location 17
7. Secure the pins in place by pushing in the two locking tabs on the C125
connector. If the two locking tabs are difficult to push back, this indicates
that one of the inserted pins is not seated correctly.
8. Run the AV and AT wires to the locations required for your new sensors.
Notes:
• The red wires are 5 V
• The black wires are 0 V
• Coloured wires are the AV and AT wires
• You can shorten the looms as required by cutting them shorter
• You should loop and tie up unused looms for future use
MoTeC C125 Track Kits 15
Installing the OBD-II To Display Loom
The OBD-II loom is a terminated adapter that joins the C125 terminated loom
(#62204) to the standard on-board diagnostics port on most road cars 2007 or
later.
There is no standard location for the OBD-II socket in a road car, so you will
have to search your vehicle to find its location. The most common place is in
the driver’s foot well, under the dash panel. In some instances it is directly
accessible, other times you may need to remove a covering panel.
Installation method – if C125 came pre-configured
1. Plug in the C125, buttons and GPS. DO NOT connect the OBD-II To
Display Loom at this stage.
2. Plug the cigarette lighter power adapter into a spare power supply socket.
3. Press and hold the red button on the button loom for at least 5 seconds. If
correctly configured, “OBD-II” will display on the C125. NOTE: If “OBD-II”
does not display, do not plug in the OBD-II To Display Loom and follow the
NOT pre-configured instructions.
4. Plug the 4 pin DTMF connector into the connector labelled ECU.
5. Find the OBD-II connector and plug in the mating connector.
6. Start the car. Installation should now be complete.
Installation method – if C125 is NOT pre-configured
1. Plug in the C125, buttons and GPS. DO NOT connect the OBD-II To
Display Loom at this stage.
2. Plug the cigarette lighter power adapter into a spare power supply socket
3. Connect a laptop to the C125 using the provided Ethernet lead
4. Start up C125 Dash Manager
5. Select Tools > Connection settings in C125 Dash Manager, then select
Add
6. Select the Search button
7. Highlight the device displayed in the connected device window, and select
the Select button
8. Select OK on the new IP screen
9. Select OK on the Connection settings screen
10. Select File > New
11. Select C125 OBD2 configuration
16 C125 Track Kits MoTeC
12. Select Online > Send Configuration to put the OBD-II configuration in
the Dash
13. Save the file with a new name, such as “my start file”
14. Choose Yes, or Ok to any warnings that display while this new
configuration is sent to the Dash.
15. Press and hold the red button on the button loom for at least 5 seconds. If
correctly configured, “OBD-II” will display on the C125. NOTE: If “OBD-II”
does not display, do not plug in the OBD-II To Display Loom and contact
your dealer.
16. Plug the 4 pin DTMF connector into the connector labelled ECU.
17. Find the OBD-II connector and plug in the mating connector.
18. Start the car. Installation should now be complete.
Installing the CAN ECU To Display Loom
The CAN ECU To Display Loom connects the C125 loom to a MoTeC CAN
ECU via the CAN communications connector.
NOTE: The CAN communications connector is the socket that you would
normally use to connect a UTC to your ECU for tuning.
Installation method – if C125 came pre-configured
1. Plug in the C125, buttons and GPS.
2. Connect the C125 to CAN ECU adapter loom to the ECU plug on your
C125 loom. Plug the other end into your ECU communications connector.
3. Plug the cigarette lighter power adapter into a spare power supply socket. If
your vehicle does not have a power supply socket, cut off the adapter and
connect the red wire to a fused 12 V source and the black wire to chassis
ground.
4. Power up the car, including turning on the MoTeC ECU. The number in the
top right of the display should change to show the current Engine
Temperature. NOTE: If the Engine Temperature is not displayed, then
either your ECU or C125 isn’t correctly configured. Follow the not preconfigured instructions.
5. The installation should now be complete.
Installation method – if C125 is NOT pre-configured
1. Plug in the C125, buttons and GPS.
2. Connect the C125 to CAN ECU adapter loom to the ECU plug on your
MoTeC C125 Track Kits 17
C125 loom. Plug the other end into your ECU communications connector.
3. Plug the cigarette lighter power adapter into a spare power supply socket. If
your vehicle does not have a power supply socket, cut off the adapter and
connect the red wire to a fused 12 V source and the black wire to chassis
ground.
4. Connect a laptop to the C125 using the Ethernet lead provided.
5. Start up C125 Dash Manager.
6. Select Tools > Connection settings in C125 Dash Manager, then select
Add.
7. Select the Search button.
8. Highlight the device displayed in the connected device window, and select
the Select button.
9. Select OK on the new IP screen.
10. Select OK on the Connection settings screen.
11. Select File > New
12. Select C125 M400 M600 M800 template if you have one of those ECUs,
or select the C125 M84 template.
13. Select Online > Send Configuration to put the configuration in the Dash
14. Save the file with a new name, such as “my start file”
15. Choose yes or ok to any warnings that display while this new
configuration is sent to the Dash.
16. Power up the car, including turning on the MoTeC ECU. The number in
the top right of the display should change to show the current Engine
Temperature. NOTE: If the Engine Temperature is still not displayed, check
ECU settings as shown below.
17. The installation should now be complete.
ECU settings
Start ECU manager, and connect your UTC.
Select Adjust > General setup > Communications > CAN Setup
Set CAN 0 Data to 0
Set CAN 0 Address to 1520
Set CAN 0 Transfer Rate to 50
18 C125 Track Kits MoTeC
Installing the RS232 ECU To Display Loom
The RS232 ECU To Display Loom connects the C125 loom to an ECU via its
RS232 communications connector.
NOTE: The RS232 communications connector is the socket that you would
normally use to connect to your ECU for tuning.
Installation method – if C125 came pre-configured
1. Plug in the C125, buttons and GPS.
2. Connect the C125 to RS232 ECU adapter loom to the ECU plug on your
C125 loom. Plug the other end into your ECU communications connector.
An additional cable/adapter may be required in conjunction with the RS232
adapter for some ECU’s.
3. Plug the cigarette lighter power adapter into a spare power supply socket. If
your vehicle does not have a power supply socket, cut off the adapter and
connect the red wire to a fused 12 V source and the black wire to chassis
ground.
4. Power up the car, including turning on the ECU. The number in the top right
of the display should change to show the current Engine Temperature.
NOTE: If the Engine Temperature is not displayed, then either your ECU or
C125 isn't correctly configured. Follow the not pre-configured instructions.
5. The installation should now be complete.
Installation method – if C125 is NOT pre-configured
1. Plug in the C125, buttons and GPS.
2. Connect the C125 to RS232 ECU adapter loom to the ECU plug on your
C125 loom. Plug the other end into your ECU communications connector.
An additional cable/adapter may be required in conjunction with the RS232
adapter for some ECU’s.
3. Plug the cigarette lighter power adapter into a spare power supply socket. If
your vehicle does not have a power supply socket, cut off the adapter and
connect the red wire to a fused 12 V source and the black wire to chassis
ground.
4. Connect a laptop to the C125 using the Ethernet lead provided.
5. Start up C125 Dash Manager.
6. Select Tools > Connection settings in C125 Dash Manager, then select
Add.
7. Select the Search button.
MoTeC C125 Track Kits 19
8. Highlight the device displayed in the connected device window, and select
the Select button.
9. Select OK on the new IP screen.
10. Select OK on the Connection settings screen.
11. Select File > New
12. Select C125 M4 M48 template if you have one of those ECUs. Other
ECUs will require a custom template.
13. Select Online > Send Configuration to put the configuration in the Dash.
14. Save the file with a new name, such as “my start file”
15. Choose yes or ok to any warnings that display while this new
configuration is sent to the Dash.
16. Power up the car, including turning on the ECU. The number in the top
right of the display should change to show the current Engine Temperature.
NOTE: If the Engine Temperature is still not displayed, check ECU
settings, as shown below.
17. The installation should now be complete.
ECU settings
Start M4/M48/M8 ECU Manager and connect the laptop.
Select Adjust > General setup > Miscellaneous Setup 2
Set Telemetry Baud Rate to 19201
Set Telemetry Data Set to 5
20 Installation MoTeC
Installation
This section provides information on how to install the Display Logger in the
vehicle and connect it to other devices. It will also provide information on how
to install the software.
Mounting and Wiring
The Display Logger has three threaded mounting posts. For further details
see Mounting Dimensions
Mounting Tips
• Avoid twisting the case: use washers between the unit and the mounting
panel to ensure that the unit is mounted only at the mounting points and
do not over tighten the mounting screws.
• Vibration isolation may be desirable if the vehicle vibrates severely.
• Mount so that the connector may be easily accessed.
• Orientation: for best contrast, the display should be viewed at an angle
of approximately 20 degrees, however the Display Logger will provide
good contrast between 0 and 40 degrees. Display reflections should also
be considered when determining the mounting angle.
.
The C125 uses a 34 pin connector. See Connector
Function for full details.
and C125 Pin List by
Wiring Tips
• To ensure that the connector is sealed, plug unused holes with filler
plugs.
• Use 22# Tefzel wire (Mil Spec M22759/16-22) (5 A max at 100 C)
• Tefzel wire is difficult to strip unless the correct stripping tool is used.
• Be careful not to nick the wires as this may result in wire failure or poor
crimping.
MoTeC Installation 21
• Some sensor connectors may not be available with 22# terminals, in
which case doubling the wire over gives the equivalent of an 18# wire.
This is suitable for many of the common sensor terminals.
• Use the correct crimping tool for all contacts to ensure a reliable
connection.
• Power the Display Logger via a separate switch and a 5 ampere fuse, to
ensure the PC can communicate with the Display Logger without the
need to power the rest of the vehicle.
• The C125 ground must have a direct connection to the vehicle battery.
• The Display Logger is connected to other devices via the CAN bus.
Connecting Devices
Peripheral devices can be directly connected to the Display Logger's input
and output pins. The Display Logger can also send or receive data from other
devices via either RS232 or CAN communications.
Inputs – Requires I/O Upgrade
Input Types
A range of sensors is available to suit different types of measurement, e.g.
temperatures, pressures, speed. Each type of measurement generates a
different electrical signal that requires a suitable input type.
Each sensor needs to be connected to the type of input designed to suit that
type of sensor.
MoTeC devices have the following input types available:
• Analogue Voltage Inputs
• Analogue Temperature Inputs
• Digital Inputs
• Wheel Speed Inputs
In addition to sensors connected to the inputs, the Display Logger has internal
sensors available for battery voltage, device temperature and G-force.
Analogue Voltage Inputs
Analogue Voltage inputs are normally used to measure the signals from
analogue voltage type sensors, i.e. sensors with variable voltage outputs,
such as:
o Rotary or linear potentiometers
22 Installation MoTeC
o Signal conditioned three-wire pressure sensors
o Thermocouple amplifiers
o Accelerometers
These inputs can also be used to measure two-wire variable resistance
sensors if an external pull-up resistor is connected from the input to the
5 V sensor supply.
Additionally, on/off switch signals may be connected, which may also
require an external pull-up resistor.
Analogue Temp Inputs
Analogue Temperature inputs are identical to Analogue Voltage inputs,
except that they contain a 1000 ohm resistor which is connected internally
from the input pin to the 5 V sensor supply. This allows the Analogue
Temperature inputs to be used with two-wire variable resistance sensors,
such as:
o Two wire thermistor temperature sensors
o Two wire variable resistance pressure sensors
Some voltage output sensors can also be used if they can drive the 1000
ohm resistor without causing an error in their reading (e.g. MoTeC
Thermocouple Amplifier).
Additionally, on/off switch signals may be connected.
Digital Inputs
Digital inputs can be used for the external switches required to operate the
display. These inputs have a 4700 ohm resistor connected internally from
the input pin to the 5 V sensor supply so that a switch can be simply
connected between the input pin and 0 V.
They can also be connected to a brake switch or other switch.
Digital Inputs include the following measurement methods:
o Frequency: The frequency of the input signal is measured
o Period: The time between successive pulses is measured
o Pulse width: The low time of the pulse is measured
o Count: Counts the number of pulses
o Phase Difference: Calculates the phase difference between two digital
inputs
o Beacon: For connection of a lap beacon
MoTeC Installation 23
Speed Inputs
Speed Inputs are identical to Digital Inputs except that they can also be
configured to suit Variable Reluctance (Magnetic) sensors, such as some
wheel speed sensors. Because the amplitude of the signal from these
sensors changes with speed of rotation, variable trigger levels are
required, which must vary with the frequency of the input signal.
The Speed Inputs can also be used with Hall Effect type wheel speed
sensors.
The Pulse Width method measures the high time of the pulse rather than
the low time as measured by the Digital Inputs.
Input Specifications
For full specifications see Input Characteristics.
Expanders
If additional sensors are required, input expanders can be used, such as
MoTeC’s E816 and E888. Sensors can be connected to the expander inputs
and communicate via either RS232 or CAN. See Configuring
Communications.
Outputs – Requires I/O Upgrade
Auxiliary Outputs are used to control various vehicle functions, for example:
o Gear Change Lights
o Warning Lights
o Relays controlling Thermatic Fans and Pumps etc.
Note: Devices that consume more than the maximum current (e.g. motors)
should be driven via a relay or a MoTeC PDM (Power Distribution Module).
Output Specifications
Full specifications can be found in Output Characteristics.
Expanders
If additional outputs are required, output expanders can be used, e.g. PDM.
Expander outputs can perform the same tasks as the device outputs and can
be driven by communication via either RS232 or CAN. See Configuring
Communications.
24 Installation MoTeC
Communications
Communications are used to send and receive data from one device to
another. There are two communication protocols: RS232 and CAN. Generally
older devices use RS232 and newer devices use CAN.
CAN (Controller Area Network) Communications
This protocol enables communication between all devices connected to the
same bus. The CAN bus allows for communicating at high speeds. The C125
has two independent CAN communications ports that can be connected to
other devices with a compatible CAN port. The bus speed for each interface
can be set independently.
Typical MoTeC devices communicating over CAN:
o M84 and 'Hundred Series' ECUs: M400, M600, M800, M880
o Shift Light Module: SLM
o Lambda meters: LTCs, PLM
o Expanders and input modules: E888, PDM
o Displays: SDL3
o Beacon receiver: BR2
These devices communicate at 1 Mbit/sec, so any other devices connected
on the CAN bus must also communicate at 1 Mbit/sec. If a device
communicates at another speed, it should be wired to the other CAN bus, and
the speed of that CAN bus must be set to match the speed of the device.
RS232 Serial Communications
This is a one to one protocol, communicating from one device to one other
device. Typical devices communicating over RS232:
o MoTeC M4, M48 ECUs
o Radio telemetry device
o Global positioning system: GPS
Note: The Display Logger can only communicate with devices for which it has
the appropriate communications protocol defined.
MoTeC Installation 25
Connecting Devices Examples
Device Connect via Remarks
Sensors
External Buttons for:
- Display mode
- Display next line
(and optional
previous line)
- Alarm acknowledge
- Lap number reset
External LED Lights
SLM Shift Light
Module
K-type
Thermocouples
Inputs:
The appropriate input
type depends on the
sensor type
Inputs:
Digital or Speed inputs
Outputs:
Auxiliary output
Communications:
CAN
Inputs:
Analogue Voltage or
Analogue Temperature
input
MoTeC supplies datasheets
with wiring details for all
sensors via the website
Wire between Display
Logger input and Display
Logger 0 V.
If wired to an Analogue
Voltage input, connect an
external pull-up resistor
between the input pin and
the 5 V sensor supply.
Wire between one of the
Auxiliary Outputs and battery
positive and include a
current limiting resistor.
Connect via TCA (Thermo
Couple Amplifier)
Communications:
CAN
ECU M4, M48, M8
ECU M84, 'Hundred
Series': M400, M600,
M800, M880
Communications:
RS232
Communications:
CAN
Connect via E888
Uses the Telemetry feature
of the ECU to send data to
the Display Logger
Ensure the ECU and Display
Logger are connected on the
same CAN bus
26 Installation MoTeC
Software Installation
This section provides information on Dash Manager software, and i2 Data
Analysis software.
It will also explain how to connect the Display Logger to the PC.
PC Recommendations
MoTeC recommends a dedicated laptop for your race car with the following
specifications:
• Windows XP, Vista or Windows 7, Windows 8
• Screen size: 1024 x 768
• Processor speed: 1-2 GHz Pentium
• 2 GB RAM
• 256 MB graphics card
• 2 USB ports
• Ethernet port
Most current laptops will meet the specifications above and this will ensure all
MoTeC software will run on it.
C125 Dash Manager Software
C125 Dash Manager software is used for configuration, testing, retrieving the
logged data, and for general management of the Club Display Logger.
C125 Dash Manager supports configuration of the following connected
devices: E816, E888, SLM.
Installing Dash Manager Software
1. Go to the MoTeC website at www.motec.com and navigate to
software/latestreleases/C125 Dash Manager software
OR
Locate the Dash Manager software on the MoTeC Resource Disc
2. Save the selected file in your preferred location (for example desktop)
3. When downloading is finished, double click on the file and select run
4. Follow the instructions on the InstallShield Wizard
5. To start the program after installation, click the C125 Dash Manager
icon on the desktop or click Start > All Programs > MoTeC > C125 >
C125 Dash Manager
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