Devicenet - Saunders M-VUE Installation, Operation And Maintenance Manual

DeviceNet

DeviceNet System Topography
The Saunders® DeviceNet M-VUE can be utilised with the following system topographies:
• Branch Line
• Tree
• Line
The Saunders® DeviceNet M-VUE can not be utilised with the following system topographies:
• Star
• Ring
DeviceNet System Cabling
Thick Cable
The DeviceNet thick cable is also known as a Trunk Cable. It has an external diameter of 12.5 mm, with a PVC cover or in special
cases a PU cover. You can also use this cable for drop lines. Excessive bending of this cable can reduce its ability to meet DeviceNet
requirements. The power rating is normally 8A. Because of its diameter this cable has limited flexibility and can be difficult to install
in some circumstances.
Thin Cable
The DeviceNet thin cable is also known as a Drop Cable. It has an external diameter of 7mm, with a PVC cover or in special cases PU
cover. Due to the smaller diameter the thin cable is more flexible than thick cable, but care must be taken with cable installation.
Cable Lengths
The table below shows the maximum cable length according to the communication (transmission) rate adapted to the network.
For long distances the inductance and distributed capacitance is greater and reduces the digital communication signal:
Cable Type
Thick Cable
Thin Cable
Thin Cable
Thin Cable
www.cranecpe.com
Cable Function
125 kbits/s
Trunk
Trunk
Derivation
S Derivation
Transmission Rate
250 kbits/s
500 m 250 m
100 m
6 m
156 m 78 m
500 kbits/s
100 m
39 m
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