VALOR TPMS203 CANBUS User Manual

CAN module

CANBUS USER MANUAL

1.1.

REQUIREMENTS

1.1.1. PHYSICAL REQUIREMENTS

The module shall be compatible with various types of power supply for different commercial vehicles,
mainly 12V and 24V.
Normal operating conditions：

• Operating temperature： -40℃—+85℃；

• Relative humidity： 45%—75%；

• Pressure： 86Kpa—106Kpa（absolute pressure value）；

• Storage temperature range：-40℃—+85℃.

1.1.2. FUNCTION REQUIREMENT

CAN module shall be able to receive, process, analyze, store and transmit data from the sensors and the
tool. Its main functions are as follows:

• Reliable data receiving: the receiving rate shall > 90%

• Time setting

• Data storage

• Serial Port data transmission

• Sensor ID registration

The module communicates with TPMS Smart Tool and realizes ID LEARNING. After TPMS is started, the
CAN module will transmit its ID to TPMS Smart Tool by RF. Then the Sensor ID of each tire will be learned
by TPMS Smart Tool. All the Sensors ID and CAN module ID in the TPMS Smart Tool are transmitted to
CANBUS again for registration. Besides, the data of pressure and temperature of tires will be transmitted
by CANBUS, not by RF.

1.1.3. PROPERTIES REQUIREMENT

• Reverse polarity requirements: after one-minute connection of reverse polarity, the product shall
be able to function properly with normal power supply;

• Receiver’s contact discharge level is 8KV, air discharge level is 15KV.

1.2. CAN MODULE PRINCIPLE

CAN module is used to receive wireless information, and appropriately process and display information.
Main parts and functions of CAN module are：

• R/F receiver module decodes high frequency signal transmitted by tractor’s transmitting module
and transceiver module; then it sends the data package to MCU through SPI port.

• MCU analyzes data information in the data package. In the case of tire pressure sensor signal,
sensor ID will be analyzed. If sensor ID is the same with its predetermined ID information, its
temperature and pressure information will be collected and processed; once sensor ID is different with its
predetermined ID information, the data will not be considered as that vehicle’s tire data and will not be
processed.

• Power system will change 12V or 24V vehicle power supply into normal operating voltages for
different modules.

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CAN module

• Memory module records tire information stored by the receiver (if any abnormality occurred in
any tire, the tire information will be immediately stored), the data can be downloaded to a computer
through Serial Port or wirelessly for analysis.

1.3. CAN MODULE PERFORMANCE DISCRIPTION

1.3.1. MODULE INTERFACE CIRCUIT AND INSTALLATION DIMENSION

Note: ANT is antenna interface. Wire is extended to vehicle chassis. Le ngth of wire is defined by vehicle
manufacturer according to different vehicle models.

1.3.2. DEFINITION OF PORT

z CAN BUS port：
Socket type: MOLEX 39-01-2060 or 5569-06AIS(corresponding plug model as 39-01-2060 or
5557-06R) 6pin

Definition of pin：

5 pin 2 pin 3 pin 6pin

GND
（black）

z RF port：
REVERSE SMA port (90° angle)

2

VIN（DC24/12V
compatible, red）

CANH（yellow）

CANL（green）

CAN module

1.3.3. FUNCTIONS

1.3.3.1.

When tire pressure is≥10.8Bar（8.3*1.3）, high pressure warning level two, potential risky status, driver
shall stop the vehicle and adjust tire pressure immediately.
When tire pressure is≥9.5Bar（8.3*1.15）, high pressure warning level one, it calls driver’s attention to
tire pressure and adjust tire pressure accordingly.

HIGH PRESSURE WARNING

1.3.3.2. LOW PRESSURE WARNING

When tire pressure is < 7.4Bar（8.3*0.9）, low pressure warning level one, it calls driver’s attention to
tire pressure and adjust tire pressure accordingly.
When tire pressure is< 6.6Bar（8.3*0.8）, low pressure warning level two, potential risky status, driver
shall stop the vehicle and adjust tire pressure immediately.

1.3.3.3. HIGH TEMPERATURE WARNING：

When tire pressure is≥80℃, it gives out high temperature warni ng, driver shall stop the vehicle and
lower the temperatu re of the tire.

1.3.3.4. FAST LEAKAGE WARNING：

When the tire pressure loss is ≥0.33Bar within 16s, it gives out fast leakage warning, driver shall stop the
vehicle and make appropriate treatment.

1.3.3.5. NON-RECEIVING DATA WARNING：

When the system does not receive tire pressure information for more than 20 minutes, it gives out non­receiving data warning.

1.3.3.6. CAN BUS COMMUNICATIONS

When any of the above 5 kinds of information is received, the system will send data to ICM through CAN
BUS for processing.

1.3.3.7. DATA STORAGE

The system can store 4300 of tire information. Under norm al conditions, data shall be stored every 30

minutes; under abnormal condition, data shall be stored every 10s. When abnormality occurs in any tire,
the stored information shall be reviewed. The function is similar to Black Box.

1.3.3.8. ID LEARNING

The module communicates with TPMS Smart Tool and realizes ID LEARNING;
To make integration of TPMS to vehicles simple, save installation time, our proposed installation process is
as follows:

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