Allen-Bradley ControlLogix Manual de usuario descargar pdf (Pagina 4)

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2.2. ABCOMPACTLOGIX/CONTROLLOGIXSERIESPLCSETHERNET/IPCONNECTIONTIMEOUT

(SETTINGTIMEOUT TOSHORTCANCAUSEPROBLEMS!)

WhenusingtheEthernet/IPwithAllen‐BradleyCompactLogix/ControlLogix(Logixseries),theTCPConnectiontimeoutisset

onapermessageinstructionbasisusing“MessageConfiguration”ratherthan“Channelconfiguration‐Channel1”ofthe

MicroLogixseries.

Whenmessagesaredefinedusing“MessageConfiguration”andusingpathex:“LocalENB,2,192.168.1.9:1,0”.



 Briefdescription:



‐ TCPconnectionisopenedwhenthefirstmessageissent.

‐ TheTCPconnectiontimeoutissetbydefaultto120secsincetheinactivitydefaultsettingis120sec.

‐ WhileconnectionisestablishedwithsameremoteIPandsameport,ex:192.168.1.9,othermessageswilluse

thesameTCPconnection,andthereforeresettingthetimeoutcountforeachmessagesent.

‐ Whenallmessagesareusingthesamedefaultinactivitytime(120sec)theTCPconnectionsstaysopenaslong

thenextmessageissentwithintheinactivitytimeoutperiod.

‐ TheTCPconnectionisclosedafter

thelastmessageplustheinactivityperiod(default120sec).

‐ TheTCPconnectioncanalsobeterminatedbasedonnetworkconnectionproblems.

Exampleusingdefaultinactivitytimeout(120sec).



OverwritingthedefaultinactivitytimeoutfortheTCPconnectionin“MessageConfiguration”:



(Notrecommendedunlessrequired)

Itispossibletooverwritethe“MessageConfiguration”defaultinactivitytimeoutvaluebyusingpathex:“LocalENB,2,

192.168.1.9:inactivity‐100,1,0”.Using“inactivity‐100”wouldsettheinactivitytimeoutto100secondsinsteadofthedefault

120seconds.(Note:Settingof“inactivity‐x”:wherexcanbe

between1and120seconds,usingx>120secondswilldisable

themessagecompletely).

Overwritingthedefaultinactivitytimeoutisnormallynotrequiredandcancauseadditionalsideeffects.Oneoftheseside

effectswouldbewhentheinactivitytimeoutislessthanthelongestdelaybetweentwomessages;additional

IPmessages

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Allen-Bradley ControlLogix Manual de usuario Pagina 4