Beckhoff CX8095, Руководство пользователя

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Mounting and wiring
CX8095 24 Version: 1.5
10BaseT
Describes a twisted pair cable for 10 Mbaud. The network here is constructed as a star. It is no longer the
case that every device is attached to the same medium. This means that a broken cable no longer results in
failure of the entire network. The use of switches as star couplers enables collisions to be reduced. Using
full-duplex connections they can even be entirely avoided.
100BaseT
Twisted pair cable for 100 MBaud. It is necessary to use a higher cable quality and to employ appropriate
hubs or switches in order to achieve the higher data rate.
10BaseF
The 10BaseF standard describes several optical fiber versions.
Short description of the 10BaseT and 100BaseT cable types
Twisted pair copper cable for star topologies, where the distance between two devices may not exceed 100
meters.
UTP
Unshielded twisted pair
This type of cable belongs to category 3, and is not recommended for use in an industrial environment.
S/UTP
Screened/unshielded twisted pair (screened with copper braid)
Has a general screen of copper braid to reduce influence of external interference. This cable is
recommended for use with Bus Couplers.
FTP
Foiled shielded twisted pair (screened with aluminum foil)
This cable has an outer screen of laminated aluminum and plastic foil.
S/FTP
Screened/foiled-shielded twisted pair (screened with copper braid and aluminum foil)
Has a laminated aluminum screen with a copper braid on top. Such cables can provide up to 70 dB reduction
in interference power.
STP
Shielded twisted pair
Describes a cable with an outer screen, without defining the nature of the screen any more closely.
S/STP
Screened/shielded twisted pair (wires are individually screened)
This identification refers to a cable with a screen for each of the two wires as well as an outer shield.
ITP
Industrial Twisted-Pair
The structure is similar to that of S/STP, but, in contrast to S/STP, it has only one pair of conductors.