Installing the Bridge Hardware
21
2.7Verifying theNetworkCommunication
RefertoFigure8forthe locationsof the bridge’sindicators.
2.7.1EthernetCardIndicators
The Ethernetcard hasan indicatorthatshowsavalidconnection between the
card’sRJ--45(UTP)jack and the network. It hasanotherindicatorwhichflashes
toshow’sthebridge’s communication activityon the Ethernetlink.
Table 11 EthernetCardIndicators
Indicator(Green)Status
RJ--45Connection ValidValidconnectionexistsatRJ--45 port.
TCP/IPNetworkActiveBridgeisactively communicating TCP/IP.
2.7.2ModbusPlusCardIndicators
The ModbusPlus card hasan indicatorthat flashesarepetitive patterntoshowits
network communication status,plustwoindicatorswhichidentify communication
errorson the twoModbusPlus cable paths.Notethatone errorindicatorwill belit
normallyinsingle--cableinstallations,showingthatasecond cable doesnotexist.
Table 12 ModbusPlusActive IndicatorPatterns
IndicatorPattern(Green)Status
Sixflashes/second Normaloperatingstate.All nodeson a
healthynetworkflashthispattern.
Oneflash/second The node isoff-line.Afterbeing inthis state
for5seconds,the node attemptstogotoits
normaloperatingstate.
Twoflashes,then OFF for2secondsThe node detectsthe networktoken being
passedamong othernodes,butitnever
receivesthetoken.
Threeflashes, then OFF for1.7secondsThe node doesnotdetectanytoken passing
onthe network.
Fourflashes,then OFF for1.4secondsThe node hasdetected anothernode using
thesame address.
Table 13 ModbusPlusChannelErrorIndicators
Indicator(Red)Status
ErrorChannelACommunicationserroratnetworkportA.
ErrorChannelBCommunicationserroratnetworkportB.