Parker Hannifin
For multiple CANopen slave nodes, you must fabricate your own cable
network. Parker Hannifin recommends the cables provided in Table 52.
CANopen Cables for Multiple-Node Networks
Part Number Description
Belden 7895A or equivalent Short to moderate cable runs
1
Belden 7896A or equivalent Long cable runs
1
1. See Table 53 for bit-rate de-rating and cable lengths.
Notes
Maximum slave node count is ≤ 4.
Parker Hannifin recommends installing a termination resistor (120Ω) at both ends of the
CANopen trunk line.
The blue/white twisted pair is for signal transmission, and the black/red pair is for ground
and power.
Table 52 CANopen Cables for Multiple-Node Networks
Table 53 contains estimated cable and drop-line lengths to serve as a
guideline for installing a CANopen network.
Bit Rate
(bits/
second)
Maximum
Bus
Length (m)
Maximum
Drop Length
(m)
Maximum
Cumulative
Drop
Length (m)
Recommended
Cable
1M 30 2 10
800k 50 3 15
500k 100 5 25
250k 250 10 50
125k 500 20 100
Belden 7895A
50k 1000 48 240
20k 1000 120 600
10k 1000 120 600
Belden 7896A
Notes
Maximum bus length includes the length of the main trunk line plus the length of all the drop lines.
Maximum drop length is for a single drop line.
Maximum cumulative drop length is the total length of all drop lines.
Keep wires as short as possible, especially drop lines.
Parker Hannifin recommends installing a termination resistor (120Ω) at both ends of the CANopen
trunk line.
System noise, improper cable routing, incorrect cable type, and number of CANopen nodes can
all degrade network performance. Reliable operation may require shorter cable lengths. See
noise-related issues in Error! Reference source not found. on page Error! Bookmark not
defined..
Table 53 Estimated Cable and Drop-Line Lengths
Chapter 3 Installation 89
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