Allen-Bradley ControlLogix Uživatelský manuál stáhnout pdf (Strana 3)

CalAmpWirelessNetworksTechnicalSupport|Tel507.833.8819|Email[email protected] Page3of10

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1. OVERVIEW

AguidetoassistwithAllen‐BradleyCompactLogix/ControlLogixcommunicationsetupbetweenmasterPLCandremotePLC

usingABEtherNet/IPTCPprotocolbetweenPLCs.

PLCcommunicationviaseriallinesorserialterminalserverisnotcoveredhere,neverthelesssomeoftheinformation

couldapply.

NOTE:PleaseconsulttheCalAmp’s“Viper

GeneralPLCsetup”supportbulletinforimportantinformationonsetting‐up

systemswithPLCs.

2. ALLEN‐BRADLEYCOMPACTLOGIX/CONTROLLOGIXPLCS

BelowisalistofimportantsettingstoimprovecommunicationwhenusedwithalimitedbandwidthVipernetwork.More

informationoncommunicationcanbefoundintheCalAmp’s“ViperGeneralPLCsetup”

supportbulletinonCalAmp’s

supportWebpage.

NOTE:Whenrequired,contactyourPLCproviderorAllenBradley/RockwellAutomationsupport.

2.1. PLCLADDERLOGICONRESTARTOPENSALLCONNECTIONSAT ONCEINSTEADOF

SEQUENTIALLY

WhenPLCladderprogramissetuptohaveatstartupallwritemessagerungssettotrue,allTCPconnectionsaretriggered

"simultaneously".ThiscreatesanoverloadofTCPSYNsandsomewhatcouldcongesttheon‐airtrafficdependingonthe

system.

Itisrecommendedtosetuptheladderwrite

messagerungsnottostartupsimultaneously.Writemessagesshouldbesetup

toopentheTCPconnectionsequentially.FormoreinformationcontactyourPLCproviderorAllenBradley/Rockwell

Automationsupport.

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Allen-Bradley ControlLogix Uživatelský manuál Strana 3