Rockwell-automation 1761-NET-ENIW MicroLogix Ethernet Interface (ENI) Uživatelský manuál stáhnout pdf (Strana 121)

1 Publication 1761-UM006E-EN-P - August 2005

Chapter

Troubleshooting

This chapter covers the following Troubleshooting topics:

• Network Troubleshooting

• Using ENI/ENIW with Routers

• LED Sequence at Power-Up

• Troubleshooting Using the LED Indicators

• Error Codes Generated by the ENI/ENIW

Network Troubleshooting

Maintain ENI/ENIW Cable Connections

The UTP (unshielded twisted pair) 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 must move the ENI/ENIW to a

new port for any reason, power-cycle the ENI/ENIW. The power cycle

forces a new ARP (address resolution protocol) request to be sent

which should immediately associate the ENI/ENIW’s IP address with

the port it is connected to.

You should also discourage any field personal from treating the ports

of a switch as “all the same”. This helps to prevent any problems with

network communications being effected by moving cables.

Using ENI/ENIW with

Routers

In order to use the ENI/ENIW with standard Ethernet routers, you

must configure the IP address of the router on the local subnet into

the ENI/ENIW Gateway field using either the ENI config utility or

controller messaging. See Chapter 4 for details.

The target device port or socket number is a required field in the

TCP/IP header. When configuring routers, you may need to specify

the module port assignment. The CIP inbound port uses 44818. The

outbound port assignment varies as the processor makes and breaks

connections and binds sockets.

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Rockwell-automation 1761-NET-ENIW MicroLogix Ethernet Interface (ENI) Uživatelský manuál Strana 121