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ETAS ES800 System | User Guide
12.7 CAN Interface (CAN)
12.7.1 ES891.x
The CAN/FLX interface of the ES891.x module can optionally be operated as a CAN
FD interface or as a FlexRay interface.
The ES891.x module feature CAN interfaces in the following combinations:
- two CAN interfaces on one plug connector (CAN / CAN)
- two CAN interfaces on one plug connector that can optionally be operated
as FlexRay interface (CAN / FLX)
- one CAN interface and one LIN interface on one plug connector (CAN / LIN)
12.7.2 ES882.x / ES886.x / ES892.x
The CAN interfaces of the modules ES882.x / ES886.x / ES892.x are independent
CAN channels with separate connections and CAN controllers.
12.7.3 Operating Modes
Each one of the ES800 system CAN interfaces can optionally be operated in the
operating mode High-Speed CAN (ISO 11898-2) or CAN FD (CAN Flexible Data
Rate). The module supports both operating modes simultaneously and inde
-
pendently of each other. The operating mode can be configured independently for
the CAN interfaces in the INCA application software (HWC) or in the web interface
of the module.
12.7.4 Feature
The CAN applications supported by ES88x/ ES89x modules are listed in an over-
view in chapter 16.9.9 on page 160.
12.7.5 "Wake-Up" Function
The CAN interfaces support the "Wake-Up" function (see chapter 11.3 on page 79).
12.7.6 Bus Termination Resistor
The CAN interface requires the use of bus terminating resistors in both operating
modes. According to the CAN specification, one bus terminating resistor each of
120 ohm is required at the two open ends of the bus. It must be connected to the
cable or the plug. ETAS offers cables and terminating resistors of 120 ohm to set up
CAN networks.
NOTE
On delivery, the ES891.x CAN/FLX interface is configured for the CAN operating
mode. The operating mode is selected in the web interface of the module.
After every change of the operating mode of the interface between CAN and
FlexRay, a restart of the system is required.
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