The CAN bus baud rate has the high relationship with the bus length.
Table 2-2 indicates the corresponding bus length for every kind of baud rate in
Table 2-2 Baud rate and bus length for DeviceNet network
Baud rate (bit/s)
In order to provide an easy CAN bus wiring, the I-7242D supplies one
CAN port with two CAN bus connector interfaces. Each connecter built on the
I-7242D looks like as figure 2-3 and table 2-3.
I-7242D DeviceNet/Modbus RTU Gateway User's Manual, July 2006, Version 1.1
Figure 2-3 CAN bus connector of I-7242D
Table 2-3 Connector pins of I-7242D
Max. Bus length (m)
CAN_L bus line (dominant low)
Optional CAN Shield
CAN_H bus line (dominant high)
I-7242D user manual