ATC ATC-107 User manual

Model ATC-107
RS-232 toRS-422/485IsolatedInterface Converter
User'sManual
1.0GeneralDescription
TheATC-107isaseriesofabi-directionalinterface
converters, ModelsATC-107 opticallyisolateandconvert
unbalanced,fullorhalf-duplexRS-232signalsto0ptically
isolated,balanced, full orhalfduplexRS-422orRS-485
signalsat baud ratesupto115.2kbps.Theseunitsalso
surgesuppress theRS-422/485 lines. TheyfeatureSend
DataControlcircuitrysono softwarecontrolofhandshake
linesisrequiredinRS-485mode. ATC-107 hasbuilt-in
isolatorsforhighvoltage(2500V)protection. itprovides
Point-to-Point,MultidropandSimplexOperations.The
ATC-107canbepoweredfromtheDC 9V, 200mApower
adapter, Oneslideswitchesareusedtoconfigureits
operation mode.
2.0Specifications
2.1Interface
ConformstoEIA/RS-232andRS-422/485standards.
2.2Connectorsandsignals
TheATC-107hasaDB-25femaleconnectorontheRS-232
sideandaterminalblockconnectorontheRS-422/485side
RS-232 Side:
Connector: DB-25Female.
Signals ATC-107willbeconnectedintoaDTEinterface.
UsePins3(TXD)、2(RXD)and7(Nearsideground).
UsePin2、4、20topowerfromATC-107RS-232side.
RS-422/485Side:
RS-422 Connector: 4positionterminal block :(1)T+，
(2)T-、(3)R-、(4)R+.
RS-485Connector: 4position terminalblock:(1)485+，
(2)485-.
Signals: Dual-duplexorHalf-duplextwo-wire/four-wire
operationonly.
2.3DataRate:
300 to115.2KBPS,upto1.2kmat38.4KBPS.
2.4SendingControl
TheATC-107canusehandshakelinestopowerthe
converter,nohandshakingisrequiredtocontrolthe
RS-422/RS-485driver.theRS-485 driverisautomatically
enabledduringeachspacingstateon theRS-232 side.
Duringthemarkingoridlestate,theRS-485driveris
disabledandthedatalinesareheldinthemarkingstateby
the4.7KOhmpull-up and pull-downresistors.
2.5OperatingDistance
DataRate(KBPS) 38.419.29.64.8
MaximumDistance(km) 1.22.02.53.5
(using 24AWG wire)
2.6Power
AttheRS-422/485side，ATC-107ispoweredbyan external
powersupply(+9VDCto+12VDC@200mA)byaAC/DC
adapter.AttheRS-232sideItpoweredbyRS-232signals
TXD,RTSorDTR,Weonlyneedoneofthesesignals,the
groundsignalsintwosidesaredifferent.
2.7Switches:
RS-422/RS-485switchselectableforRS-422/485operation
mode.If you setATC-107toRS-422mode，ATC-107can
converttheTDand RDsignalsofRS-232 intobalanced
Dual duplexRS-422 signals.If yousetATC-107toRS-485
mode，ATC-107canconverttheTDand RDsignalsof
RS-232 intobalancedHalf duplexRS-485signals.
2.8LEDlight
OneLEDindicatessending datato(RED)orreceiving data
from(GREEN)RS-422/485 bus.
2.9Isolation:
OpticalIsolationisratedat2500V.
2.10Dimensions:
79mm ×54mm ×20mm
2.11Environment:
0*to50*C，5%to95%relativehumidity.
3.0Installation
3.1RS-232andRS-485 Interface
IntheRS-232side:
TheRS-232 interfaceisaDB-25 femaleconnector，It can
beplugintoaDTEinterface.
IntheRS-422/485side:
ScrewTerminals-TheATC-107issuppliedwith4screw
terminalsmarked1(T+)/(485+)、2(T-)/(485-)、3(R-)、4(R+)，.
3.2ConnectionDiagram
3.21ATC-107connectingRS-422 Device/(Fourwire
RS-485)
RS-422/(FourwireRS-485)mode
ATC-107 RS-422Device
(1)T+ ---------------------R+
(2)T-----------------------R-
(3)R-----------------------T-
(4)R+---------------------T+
3.22ATC-107 connectingRS-485 Device
RS-458mode
ATC-107 RS-485Device
(1)485+----------------485+
(2)485-------------------485-