B can communication – ElmoMC SimplIQ Digital Servo Drives-Harmonica Installation Guide User Manual
Page 34
Harmonica Installation Guide
Installation
MAN-HARIG (Ver. 1.902)
34
3.5.5.2.b
CAN Communication
Notes for connecting the CAN communication cable (J1 port):
•
Use 26 or 28 AWG twisted pair shielded cables. For best results, the shield should have
aluminum foil and copper braid.
•
Connect the shield to the ground of the host (PC). Usually, this connection is soldered
internally inside the connector at the PC end. You can use the drain wire to facilitate
connection.
•
The male RJ plug must have a shield cover.
•
Usually, the shield of the cable is soldered to the shield of the RJ plug. Ensure that it is
connected in this manner.
•
Connect a termination 120-Ω resistor at each of the two ends of the network cable.
Pin Signal
Function
Pin Positions
1
CAN_H
CAN_H busline (dominant high)
1
2
CAN_L
CAN_L busline (dominant low)
3
CAN_GND
CAN ground
4, 5 N/A
—
6
N/A
Shield, connected to the RJ plug cover
7, 8 N/A
—
Table 7: CAN (J1) Cable Pin Assignments