Terminals
‑84‑
CN3 and CN4 terminals are used for communication with the PC, PLC, and other
drives. For pin assignment of CN3/CN4, see "
Figure 4–18 Communication Terminal pin
layout of the servo drive
"
on page 83
.
● CAN communication with PLC
The following figure shows the cable used for the communication between the
servo drive and PLC in CAN communication networking.
Figure 4‑20 Outline drawing of cable used for CAN communication between the servo
drive and PLC
Use a three‑conductor shielded cable to connect the CAN bus, with the three
conductors connected to CANH, CANL, and CGND (CGND represents isolated
RS485 circuit) respectively. Connect CANH and CANL with twisted pairs. Connect
CGND to the CAN reference ground. Connect the shield to the device ground.
Connect a 120Ω termination resistor on each end of the bus to prevent CAN signal
reflection.
Table 4–20 Pin connection relation of the cable used for CAN communication between the
servo drive and PLC
RJ45 on the Drive Side (A) PLC Side (B)
Communi
cation
Type
Pin No.
Description
Communi
cation
Type
Pin No.
Description
CAN
1 CANH
CAN
1 CANH
2 CANL 2 CANL
3 CGND 3 CGND
‑
Enclosure
PE (shield layer)
‑
Enclosure
PE (shield layer)
● CAN communication connection for multi-CAN applications
The following figure shows the cable used for parallel connection of multiple servo
drives during CAN communication.
Figure 4‑21 Outline drawing of multi‑drive communication cable
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