Received Information; Manual Module Configuration - Link CAN-Lambda User Manual

Data 0 Data 1
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4.3

Received Information

Optionally information can be transmitted to the Link CAN-Lambda module. This allows the module to turn off the
sensor heater when the engine is not running and perform exhaust pressure compensation.
The built in Link ECU Link CAN-Lambda CAN communication mode automatically sends this information if it is available
to all modules.
The Link CAN-Lambda module will wait for two seconds after power up to see if this information is received. If it is not,
sensor control will be enabled. IF the information is received, sensor control will not be enabled until engine RPM goes
above 400 RPM and disable sensor control when engine speed falls below 10 RPM.
All modules receive this information on the same CAN Id 958 (0x3BE).
Data 0 Data 1
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Note: Pressure compensation range is 50-250 kPa. Absolute pressure must be used not gauge pressure (ie 0 =
absolute vacuum). If a correct pressure value is not sent to the Link CAN-Lambda module Data 6 must be zero to
ensure pressure correction is not used.
4.4

Manual Module Configuration

Link CAN-Lambda modules can be manually configured with the following information:
·
CAN Bus Bit Rate (1 MBps default)
·
Device identifier (0 by default)
Where it is not practical to use a Link ECU and PCLink to configure the Link CAN-Lambda module, it may be
configured using a suitable CAN bus analyser tool, or any CAN device that allows transmission of data in the format
shown below (eg dash display).
Finding a Link CAN-Lambda Modules Current Device Identifier
To program a module, it must be connected to a CAN bus running at the same bit rate as the module is currently
configured. The first step is to determine what device identifier the Link CAN-Lambda module currently uses. This can
be performed by finding the CAN Id that it is currently sending its transmit data on. The device identifier currently used
is this CAN Id - 950. So, if the Link CAN-Lambda module is currently transmitting data on Id 951, then its device
identifier is 1 (951 - 950 = 1). The reason we need to know the current device identifier is so we can address our
programming command directly to that device.
© 2021 Link Engine Management Ltd
Data 2
Pump Current Pump Current
-
(High Byte) (Low Byte)
x1000 mA (eg 1234 = 1.234
-
mA)
Data 2
Engine Speed Engine Speed
-
(High Byte) (Low Byte)
- RPM (eg 3000 = 3000 RPM)
Data 3 Data 4
Battery
Voltage
(High Byte)
x100 V (eg 1370 = 13.70 V) x100 V (eg 1370 = 13.70 V)
Data 3 Data 4
Exhaust
Absolute
Pressure
(High Byte)
x10 kPa (eg 1100 = 110.0
kPa)
CAN Bus Information
Data 5 Data 6
Battery Heater
Voltage Voltage
(Low Byte) (High Byte)
Data 5 Data 6
Exhaust
Absolute Use Exhaust
Pressure Pressure
(Low Byte)
0 for no
correction
15
Data 7
Heater
Voltage
(Low Byte)
Data 7
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