Yaskawa 260IF DeviceNet System - Manual (Page 31)

Network Specifications
3.1.3 Network Configuration Restrictions
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3.1.3 Network Configuration Restrictions
Maximum Network Length
The maximum network length is either the line length between the two nodes located far-
thest from each other or the line length between the terminators on the ends of the trunk line,
whichever is longer.
Both thick and thin cables can be used.
The thick cables are stiff and difficult to bend but they have little signal degradation and can
be used for comparatively long transmission distances.
Thin cables are supple and easy to bend but signal degradation is greater and they are not,
therefore, suited to communications over long distances.
The maximum network length is determined by the type of cable, as shown in the following
table.
T T
T
T
T
The longer of the two distances is the maximum
network length.
T (with terminating
resistance)
Terminating resistance
Node Node Node
Node
Node Node
: Trunk line
: Drop line
: T-Branch Adapter
Baud Rate
（ kbps）
Maximum Network Length（m）
Thick Cable Thin Cable
500 100 100
250 250 100
125 500 100