User Manual

Electric System LEXION 500 TIC
6a-4 Lex-e-06a 03/05
Description of function:
CAN bus
(Controller Area Network)
Data exchange between electronic components using a serial network.
- Measured value table
CAN bus
CAN high (U
eff
) CAN low (U
eff
) Diagnosis
1.9 ± 0.2 Volt 3.2 ± 0.2 Volt System OK
approx. 2.5 Volt approx. 2.5 Volt Short-circuit CAN high / CAN low
approx. 1.9 Volt > 3.2 Volt Short-circuit CAN high / +12 Volt
approx. 2.5 Volt < 3.2 Volt Short-circuit CAN high / Earth
> 1.9 Volt approx. 3.2 Volt Short-circuit CAN low / +12 Volt
< 1.9 Volt approx. 3.2 Volt Short-circuit CAN low / Earth
BIF/CAB module (A10) The abbreviation BIF stands for fieldwork computer and the abbreviation
CAB for CAN bridge.
This module saves the essential machine data
(machine number, operating hours ...) = BIF.
At the same time, this module constitutes the interface between different
CAN bus systems (CLAAS - Caterpillar - Daimler/Chrysler) = CAB.
Data storage All yield data is saved in the yield meter module (A21) whereas all other
performance data is saved in the fieldwork computer / CAN bridge module
(A10). It is therefore recommended to transmit these data prior to
replacing a defective module, using the CLAAS diagnosis system CDS.