IXXAT CANbridge, Manual, Page: 20 / 31

Functional description
Table 4-1 shows the possible baudrates with automatic baudrate detec-
tion:
Baudrate (CiA) BTR0 (Hex) BTR1 (Hex)
1 Mbit/s 0x00 0x14
800 kbit/s 0x00 0x16
500 kbit/s 0x00 0x1C
250 kbit/s 0x01 0x1C
125 kbit/s 0x03 0x1C
100 kbit/s 0x04 0x1C
50 kbit/s 0x09 0x1C
20 kbit/s 0x18 0x1C
Table 5-1: Baudrates with automatic baudrate detection
2. Setting a CiA-baudrate:
20 kbit/s, 50 kbit/s, 100 kbit/s, 125 kbit/s, 250 kbit/s, 800 kbit/s and
1000 kbit/s can be set (e.g. baudrate=1000).
3. Setting via Bit Timing Register
The baudrate can be set via the Bit Timing Registers BTR0 and BTR1 of the
controller. Baudrates can thus also be selected that are not defined by CiA
(e.g. BaudRate = 0x04/0x14 for 200 kbit/s).
The values for the Bit Timing Registers BTR0 and BTR1 are determined ac-
cording to the specifications for the Philips CAN controller SJA1000 with
16MHz clock frequency (see data sheet SJA1000).
5.2.3.2 FrameFormat
The frame format states in which format the messages are received. Standard
frames (11 bit identifiers) or extended frames (29 bit identifiers) can be selected.
The frame format must always be defined, but with repeater functionality (Re-
peaterFunctionality = yes) both formats are received and transmitted irrespective
of the setting of the frame format.
5.2.3.3 UseGatewayTable
The parameter UseGatewayTable specifies whether the gateway tables under
[CAN1GatewayTable] or [CAN2GatewayTable] are used. With the setting Use-
GatewayTable = no, all messages are transmitted unchanged to the other seg-
ment. The entries in the tables are ignored.
Note: with different frame formats, the gateway tables must be used for transla-
tion into the other format.
Copyright IXXAT Automation GmbH
CANbridge - Manual, V1.4
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