Continuum CPU Reference
25
10BASE-T Ethernet
Cable Limitations:
This option provides a standard RJ-45 connector for Ethernet. Unshielded twisted
pair cable is used to form this type of network (you actually use a cable with dual
twisted pairs—one for the transmit signal, and one for the receive signal). The
maximum cable length you can use between two nodes is 327 feet (100 meters). The
maximum length for the total network is 1,635 feet (500 meters). If you need to use a
cable that exceeds the recommended maximum length, use a network repeater.
10BASE-T Cable Specifications
Cables used to form the 10Base-T Ethernet should be twisted pair wire. The cable
should have a nominal impedance of 100
Ω
(85 –111
Ω
).
Recommended:
Twisted Pair Anixter CM-00224TAG-B
Twisted Pair Plenum Anixter B88102
Installation
Plug the connector of the Ethernet cable into the RJ-45 connector on the
NetController module. You must connect the other end of the cable to an Ethernet
Hub or to another NetController.
TD+1
2
4
5
6
7
8
3
1
2
4
5
6
7
8
3
TD-
RD+
Not Used
Not Used
RD-
Not Used
Not Used
TD+
TD-
RD+
Not Used
Not Used
RD-
Not Used
Not Used
NetController to Bridge, Hub
Use a straight-through cable to
attach to a bridge or hub
NetController to NetController
TD+1
2
4
5
6
7
8
3
TD-
RD+
Not Used
Not Used
RD-
Not Used
Not Used
The TD and RD pairs on the unshielded
twisted pair cable should be crossed if two
controllers are attached at each end of
the unshielded pair link segment.
1
2
4
5
6
7
8
3
TD+
TD-
RD+
Not Used
Not Used
RD-
Not Used
Not Used
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