User manual

Diagnostics and Troubleshooting ILX34-AENWG ♦ Point I/O Platform
User Manual Wireless POINT I/O Adapter
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Page112of209 ProSoftTechnology,Inc.
 September19,2011
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4.7 Check the Ethernet cable
IfyouconnectaradioandtheEthernetLEDdoesnotlightontheradio,youmayhaveusedthe
wrongcabletype.Inotherwords,youmayhaveusedacross‐overcablewhenyoushouldhave
usedastraight‐throughcable,orviceversa.
Useastraight‐throughcable
whenconnectingtheradiotoanEthernethubora10/100Base‐T
Ethernetswitch.Straight‐throughcablesareusedinmostcases.
Useacross‐overcablewhenconnectingtheEthernetradiodirectlytoanydevicethatisNOTa
switchorahub(forexample,adirectconnection
toaPC,PLC,orprinter).
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4.7.1 Cable Connections
Ethernet Cable Specifications
Therecommendedcableiscategory5orbetter.Acategory5cablehasfourtwistedpairsofwire
thatarecolor‐codedandcannotbeswapped.Theradiousesonlytwopairs.Onepairusespins1
and2,andthesecondpairusespins3and6.
 Usea
straight‐throughcablewhenconn ectingtheradiotoanEthernethubora10/100
Base‐TEthernetswitch.Straight‐throughcablesareusedinmostcases.
 Useacross‐overcablewhenconnectingtheEthernetradiodirectlytoanydevicethatisNOT
aswitchorahub(for
example,adirectconnectiontoaPC,PLC,orprinter).
EthernetcablingislikeU.S.telephonecables,exceptthatithaseightconductors.Somehubs
haveoneinputthatcanaccepteitherastraight‐throughorcrossovercable,dependingonthe
switchposition.Inthiscase,youmustensurethatthe
switchpositionandcabletypeagree.
RefertoEthernetcableconfiguration(page113)foradiagramofhowtoconfigureEthernet
cable.
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