Eurotherm Drives 631, Product Manual, Page: 30 / 94

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Standard fieldbus protocol CAN-Bus interface.
631
631
NODE 2
LAST NODE
GND
GND GND
631
NODE 1
X20 X21
X20 X21
X20 X21
124 Ohm
124 Ohm CAN-Bus
Bus
Termination
Bus
Termination
To network several 631 servo drives, connect the X20/21 sockets as shown using the specified
cables. The 631 is configured using EASYRIDER software
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Refer to Chapter 14: “Control and Communications” for cabling details.
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This Pin Assignment is related to “CiA Draft Recommendation DR-303, V0.1 / 26.10.98”.
The wires on Pins 3/6 and 4/5 should be twisted pairs.
A defined quiescence level on the bus must be guaranteed for communication. You should use
terminal resistors on both ends of the line. Use special bus plugs that have a resistance of
approximately 124
Ω
between CAN_L and CAN_H.
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