Page 6 ams Datasheet
Document Feedback [v1-00] 2015-Mar-30
HLS-442 − Electrical I nterface
CAN Bus Interface
This section describes the CAN bus interface that is available in
some variants of HLS-442.
Physical Interface
The physical interface is two-wire balanced, non-terminated. It
is a high speed CAN interface (ISO 11898-2) with bus bit rate of
125, 250 or 500 kBit/s, depending on the variant of HLS-442.
Bus Identification
Each sensor and the control unit are identified on the bus by
the CAN identity, CAN ID. The CAN ID is transmitted in the CAN
data frame arbitration field. For the sensors the CAN ID is
determined by the configuration of the power supply feeds,
UB0 (pin 3), UB1 (pin 4) and UB2 (pin 5). The table below defines
the sensor’s CAN ID, VB denotes a power input connected to
supply voltage level. Addresses are given in hexadecimal
numbers and denoted with a leading “0x”.
Figure 7:
Overview CAN ID Assignment By Power Supply Feeds
UB2 UB1 UB0 Sensor Number CAN ID
VB 1 0x640
VB 2 0x648
VB VB 3 0x650
VB 4 0x658
VB VB 5 0x660
VB VB 6 0x668
VB VB VB 7 0x670
