CANopen & CANlink Communication
‑50‑
Table 4–8 Jumper on the MD38CAN1 expansion card
Terminal
ID
Terminal Name
Function
Jumper/DIP Switch Position
CAN terminal
resistor
Connect the
terminal resistor.
Disconnect the
terminal resistor.
The jumper setting is based on the top view of the expansion card with the main wir‑
ing terminal as the bottom side. For the position of the jumper, see the PCB
silkscreen.
Communication Networking
1. CAN bus topology
The following figure shows the CAN bus topology. You are advised to use shielded
twisted pairs for the CAN bus and use twisted pair cables to connect CANH and
CANL. A 120 Ω terminal matching resistor is connected at both ends of the bus to
prevent signal reflection. The reference grounds of CAN signals on all nodes are
connected together. A maximum of 64 nodes are supported and the distance
between each node and the bus must be less than 0.3 m.
Figure 4‑4 CANlink bus topology
The following figure shows the recommended usage of different field cables.
To Next Page
Loading...
