IXXAT FlexRay CCM/ FRC-EP150, Руководство по оборудованию

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Copyright IXXAT Automation GmbH
FlexRay CCM Manual, Version 2.4
Connections
12
The FlexRay bus is isolated galvanically from the other interfaces. Channels A and
B are connected to the same potential.
3.1.2 FlexRay CCM CAN connector (CAN1 & CAN2)
The CAN bus connection supports the physical bus access in accordance with ISO
11898-2 and ISO 11898-3. It is switched over via software.
The differential signal pair (CAN-low and CAN-high) and the ground are con-
nected to the CAN-connector.
Pin Signal
1
2
3
4 5
6
7
8
1 Reserved
2 CAN-low
3, 6 Ground (CAN)
4, 5 Reserved
7 CAN-high
8 CAN VBAT
Table 3-3: Pin assignment of the CAN connector
No bus terminal resistor is integrated for high-speed CAN ISO 11898-2. If a bus
terminal resistor is required, it must be connected to the cable or connector. Fle-
xRay instrument leads with integrated terminal resistor are available as accesso-
ries.
The low-speed CAN connection according to ISO 11898-3 is terminated via two
integrated terminal resistors of 2.2 kOhm each (RTH,RTL).
CAN VBAT is used to supply the terminal resistors of the CAN low-speed connec-
tion(RTH). This is necessary when the device is not supplied with voltage via the
Power connector or the device is in Sleep mode. A voltage of 5 V to 24 V can
then be supplied.
The two CAN buses are isolated galvanically from each other and from all other
interfaces.
3.1.3 FRC-EP150 CAN connector (CAN1/3 & CAN2/4)
The connections of the CAN-Interfaces CAN1 and CAN2 are equivalent as de-
scribed in chapter 3.1.2.
The CAN bus connection of the CAN-Interfaces CAN3 and CAN4 does support the
physical bus access in accordance with ISO 11898-2 only. The differential signal
pair (CAN-low and CAN-high) and the ground are connected to the CAN-
connector.