Rockwell-automation 1761-NET-ENIW MicroLogix Ethernet Interface (ENI) Manual de usuario descargar pdf (Pagina 28)

Publication 1761-UM006E-EN-P - August 2005

2-6 Installation and Wiring

When to use straight-through and cross-over cables:

• ENI/ENIW Ethernet port to 10/100-Base-T Ethernet switch cables

utilize a straight-through pin-out (1-1, 2-2, 3-3, 6-6).

• Direct point-to-point 10/100-Base-T cables connecting the

ENI/ENIW Ethernet port directly to another ENI/ENIW Ethernet

port (or a computer 10/100-Base-T port) require a cross-over

pin-out (1-3, 2-6, 3-1, 6-2).

Ethernet Cables

Shielded and non-shielded twisted-pair 10/100-Base-T cables with

RJ45 connectors are supported. The maximum cable length between

an ENI/ENIW Ethernet port and a 10/100-Base-T port on an Ethernet

switch (without repeaters or fiber) is 100 meters (323 feet). However,

in an industrial application, the cable length should be kept to a

minimum.

With media converters or Ethernet switches, you can also connect to

the following media:

• fiber optic

• broadband

• thick-wire coaxial cable (10-Base-5)

• thin-wire coaxial cable (10-Base-2)

Maintain ENI and ENIW Cable Connections

The unshielded twisted pair (UTP) patch cable on a switch should be

labeled and treated as dedicated. Be careful when moving any cables,

as port identity may be effected. If you are using a switch and must

move the ENI/ENIW to a new port for any reason, power-cycle the

interface. The power cycle forces a new Address Resolution Protocol

(ARP) sequence which should immediately associate the ENI/ENIW’s

IP address with the port it is connected to.

To help prevent problems with network communications affected by

moving cables, discourage any field personnel from treating the ports

of a switch as “all the same”.

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 143 144

Sin comentarios

Rockwell-automation 1761-NET-ENIW MicroLogix Ethernet Interface (ENI) Manual de usuario Pagina 28