Communication extension card
-18-
➢
Supports manufacturer-defined object dictionary. You can use SDOs to control and obtain the actual
parameter values of a VFD in real time.
3.
Non-supported CANopen services
➢
Saves object dictionary parameters at power outage
➢
Time stamp service
4.
Supported CANopen addresses and baud rates
Table 3-1 Supported addresses and baud rates
Item
Supported specification
Address
1
–
127 (decimal)
Baud rate
1000 kbps
800 kbps
500 kbps
250 kbps
125 kbps
100 kbps
50 kbps
20 kbps
Note:
To enable the CANopen functions (except the CANopen communication timeout fault time and baud
rate), you need only to select the related PROFIBUS channels. If modification is made on the VFD operation
manual, the operation is subject to the CANopen channel, without prior notice in this manual.
3.3
Electrical wiring
Use shielding wires in the bus cable, if possible. It is recommended that you connect the shielding wire to
the CANG terminal of the VFD. When the communication card functions as the terminal slave, it is
recommended that you switch on the terminal resistor.
shows the electrical wiring.
Figure 3-1 Electrical wiring diagram
3.4
Communication
3.4.1
Packet format
CAN2.0A packets are used to transmit data between the master station and bus nodes through data frames.