User manual

ILX34-AENWG ♦ Point I/O Platform Diagnostics and Troubleshooting
Wireless POINT I/O Adapter User Manual
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ProSoftTechnology,Inc. Page107of209
September19,2011
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4.3 Establish I/O Connections
WhenyouapplypowertoaPOINTI/OsystemandestablishI/Oconnections,theoutputs
transitiontotheIdlestate,applyingIdlestatedatabeforegoingtoRUNmode.Thisoccurseven
whenthecontrollermakingtheconnectionisalreadyinRUNmode.
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4.4 Recover From an Overloaded Adapter
EachPOINTI/OconnectionestablishedwiththeILX34‐AENWGadapterconsumesaportionof
themicroprocessor'sbandwidth.Theamountofbandwidthusedbyaconnectiondependsona
numberofvariables,includingtherequestedpacketinterval(RPI),thenumberofPOINTI/O
modulesinvolvedintheconnection,andtherateof
changeoftheI/O.
TheILX34‐AENWGadaptercontinuouslymonitorsthisbandwidthandrejectsrequestsfornew
connectionswhenthereisinsufficientbandwidthavailabletosupportthenewconnection.
TheconditionwheretheILX34‐AENWGadaptercannotsupporttheconnectionduetoalimitof
themicroprocessor'sbandwidthisshown
inthefollowingdialog.
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Ifyouencounterthiscondition,theonlyactionyoucantakeistoaltertheexistingconnections
toreducetheamountofmicroprocessorbandwidthconsumed.Themostlikelyfixesforthis
conditionincludethefollowing.
 IncreasetheRPI.
 Decreasethenumberofconnections.