Yaskawa SmartTrac Ethernet Card - Manual (Page 11)

SMART TRAC Ethernet Card
Technical Manual Smart Trac Ethernet Card Ethernet Basics
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9
Cat-5 Twisted Pair
Ethernet Cable
Cat-5 Twisted Pair
Ethernet Cable
Cat-5 Twisted Pair
Ethernet Cable
Cat-5 Twisted Pair
Ethernet Cable
Cat-5 Twisted Pair
Ethernet Cable
Cat-5 Twisted Pair
Ethernet Cable
Laptop computer
Hub
IBM Compatible
Laser printer
SMART
TRAC
AC 1
SMART
TRAC
AC 1
SMART
TRAC
AC 1
Figure 2. A typical local area network used for PC-based operation of Smart
Trac AC1s.
Cabling and Cable Lengths
Ethernet supports several types of cables, each intended for different purposes:
•
10Base-T (Twisted-pair Ethernet) – The most widely used Ethernet
cabling, it supports network speeds of 100Mbps. Uses 22- or 26-AWG
UTP cabling to transmit baseband signals on maximum 100-meter
segments. RJ-45 jacks connect separate cables between device and hub.
Each device must be at least 2 feet apart and no more than 328 feet
from the hub. Bridges or routers may be used to accommodate a larger
network. There is no limit on network length. It permits a maximum of
1,024 segments and 1,024 nodes. See IEEE standard 802.3i.
•
10Base-2 (Thin Ethernet) – Supports network speeds of 10Mbps. Uses
RG-58 coaxial cable to transmit baseband signals on 200-meter
segments. Total network length can be 925 meters. Transceivers reside
on the NIC, simplifying connections. The cable, thinner than 10Base-5,
is more flexible for easier handling. See IEEE standard 802.3a.
•
10Base-5 (Thick Ethernet) – Now rarely used, this cable was popular
for desktop connections until the introduction of 10BaseT. It supports
networks speeds of up to 10Mbps and uses RG-8 or RG-11 coaxial
cable to transmit baseband signals in 500-meter (1,640 feet) segments.
Total network length can be 2,500 meters with up to 300 nodes. It
requires the use of transceivers located at least 8 feet apart and tapped
into the cable. A 15-pin AUI, or DIX (Digital, Intel, Xerox) connector
is used between the network cable and the AUI port on the Ethernet
NIC (Network Interface Card). See IEEE standard 802.3 for details.