Electrical Installation
‑182‑
Figure 8‑65 RS485 bus topology
The following table lists the maximum number of nodes and transmission distance
supported by the standard RS485 circuit at different transmission rates.
Table 8–23 Transmission distance and number of nodes
Transmission
Distance (m)
Rate (kbps) Number of Nodes Cable Specification
100 115.2 128 26AWG
1000 19.2 128 26AWG
8.6.2 CAN Communication Connection
CAN communication with the PLC
Use a three‑conductor shielded cable for the CAN bus to connect to the CANH, CANL,
and CGND terminals of the AC drive. Use the twisted pair cable to connect to the
CANH and CANL terminals and use the other cable to connect to the CAN reference
ground CGND. Connect the shield to the equipment ground. Connect a 120 Ω
termination resistor at each end of the bus to prevent CAN signal reflection.
The following table specifies the cable pin for the CAN communication between the
AC drive and PLC.
To Next Page
Loading...
