CANFDNET-200U
High-Performance Dual-Channel Ethernet to CAN (FD) Converter User Manual
©2021 Guangzhou ZLG Electronics Co., Ltd.
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User Manual
Master and slave
Settings
Slave
Vehicle Ethernet master and slave settings.
CAN0
configuration/CAN1
configuration
Controller type
ISO CANFD
CAN: When the bus is only CAN messages, select CAN;
ISO CANFD: The CANFD standard specified by ISO;
Non-ISO CANFD: Non-ISO CANFD standard.
Work mode
Normal mode
Normal mode: The CAN port can send and receive messages
properly;
Listen only mode: The CAN port is only used for monitoring and
does not answer.
Controller clock
40
The controller clock is fixed at 40MHz, which cannot be changed.
Customize baud
rate enable
No
Enable (Yes): The baud rate calculator appears. In the calculator,
select the baud rate and copy it to the "custom baud rate";
Disable (No): Use "arbitration domain baud rate" and "data
domain baud rate" as the controller baud rate.
Custom baud rate
-
After customization is enabled, paste the customized baud rate
copied in the baud rate calculation tool.
Arbitration domain
baud rate
1Mbps 80%
The default arbitration domain baud rate is 1 Mbps, and the
sampling point is 80%. You can select the baud rate in the
drop-down box.
When the controller type is CAN controller, this item indicates the
CAN baud rate.
Data domain baud
rate
5Mbps 75%
The default data domain baud rate is 5 Mbps, and the sampling
point is 75%; you can select the baud rate in the drop-down box.
When the controller type is CAN controller, this item is invalid.
Terminal
resistance
turn on
Turn on or turn off the 120 ohm terminal resistance; only when
the CAN node is a terminal node, the terminal resistance needs
to be turned on.
Filtering
-
Message filtering settings. Click the attribute value in this column.
The filter setting interface appears. For description of setting
items, see Table 7.11.
Timing sending
-
Timed sending settings. Click the attribute value in this column.
The timed sending setting interface appears. For description of
setting items, see Table 7.12.
Message sending
interval
0
Message sending interval of each frame. The value is 0-255 ms;
Send buffer
100
Send message buffer. The unit is 10 frames, and the value
ranges from 10 to 1000. That is, 100-1000 frames;You can set
the size of this buffer to adjust the balance between the real-time
performance of the CAN port and the large-capacity buffer.
Because the speed of Ethernet is much higher than CAN
transmission speed, if the amount of data received by Ethernet is
too large, CAN needs to buffer transmission. This guarantees that
no frames will be dropped, but such a large buffer may lead to
poor real-time performance. That is, the data currently sent by the
Ethernet can only be sent out from the CAN interface after a
certain period of time.
In this case, the customer controls the
Ethernet transmission speed to match the CAN port transmission
speed; or, reduce this buffer and use appropriate frame drop to
ensure real-time performance.
Cache sending
policy
Discard new
data when full
Policy when the sending buffer is full:
Discard new data when full: When the buffer is full, the message
cannot be written;
Discard old data when full: When the buffer is full, discard the old
data in the send buffer. At least 10 frames are discarded each
time.
Bus utilization
enable
Yes
The device will report the current bus utilization information based
on the "bus utilization rate collection cycle".
Bus utilization rate
collection cycle
200
The reporting period of the bus utilization rate is 200-2,000 ms; it
is valid when the bus utilization rate is enabled.
