9
3.0
Connecting the LambdaCANp module
Power and CAN connections to the module are made using the Eurofast 12mm connector on the
module. The power input requirement is 11 to 30VDC at 12W (steady-state). At start-up, there
can be a peak power draw of up to 40W. Multiple modules can be connected together. All
modules are configured to broadcast CAN messages at the default CAN baud rate of 500kBits/s
(to change the baud rate see section 8.12). The maximum distance between any two nodes on the
CAN bus operating at a 500kBit/s baud rate is 100m. Each end of the CAN bus must have a
terminating resistor of 121 Ohms.
3.1
Application Notes
1.
Configuration software (ECM Configuration Tool) for the module is located on the CD. This
software allows the setup, configuration, monitoring, and recording of data using supported
CAN adapters.
2.
The Lambda sensor supplied with LambdaCANp is already calibrated with the calibration
residing in a memory chip in the sensor’s connector. To compensate for sensor ageing, the
sensor can be spanned using ambient air, (it is not necessary to zero the sensor). See section
8.1 for instructions on how to perform a span of the O
2
measurement.
3.
Do not extend the wires between the Lambda sensor and the control module. You can
lengthen the power wires on the DC Power Cable (P/N: 11-01 or 11-02) but use large gauge
wire and make sure that the voltage at the power terminals of the supplied harness is at least
11 V when the sensor is being heated. You can lengthen the CAN communication wires
using Eurofast 12mm cable. Eurofast 12mm cable was designed specifically for CAN
communication and along with additional “Tees”, allows you to easily build long and reliable
CAN networks.
4.
The LambdaCANp broadcasts several messages on the CAN bus using the CANopen
protocol. Each message has an identifying number known as the CAN identifier (CANid).
Since multiple modules can be placed on the same CAN bus, each module on the bus also
has an identifying number known as the node identifier (NID). The allowable range for the
NID is 0x01 to 0x7F. When connecting other non-ECM devices on the same CAN bus,
ensure that the following CANids are not used:
Message type
CANid (hex)
NMT
0x00
Emergency
0x80 + NID
TPDO1
0x180 + NID
TPDO2
0x280 + NID
TPDO3
0x380 + NID
TPDO4
0x480 + NID
SDO Tx
0x580 + NID
SDO Rx
0x600 + NID
Heartbeat
0x700 + NID
LSS
0x7E4, 0x7E5
(Note: this list applies to EACH ECM module on the CAN bus)