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 (120
Ω
) 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 (120
Ω
) 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
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.
Table 53 Estimated Cable and Drop-Line Lengths
Chapter 3 Installation 89
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Summary of Contents for ACR9000
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