
4.DeviceConcept
HDMI-TPS-TX200series–User'sManual
29
Appliedfirmwarepackage:v1.3.2b3 | LDCsoftware:v2.5.7b2
4.8.
Serial Interface
4.8.1.
Technical Background
SerialdatacommunicationcanbeestablishedviathelocalRS-232port(Phoenixconnector)orviatheTPS
lines.TheRS-232ports–whichareconnectedtotheCPU–canbeconfiguredseparately(e.g.iftheBaud
ratesaredifferent,theCPUdoestheconversionautomaticallybetweentheports).TheRS-232portcanbe
switchedtoPass-throughmode,Controlmode,orCommandInjectionmode;seethefigurebelow.
Block diagram of the serial interface
Thefollowingsettingsaredefined:
1
TheLocalandtheTPSserialportsarein
Control mode
.
2
TheLocalandtheTPSserialportsarein
Pass-through mode
.
3
TheLocalandtheTPSserialportsarein
Command Injection
mode
.
INFO:
AllsettingsareavailableintheLDCsoftware,seesettingsinthe
section.
Onlyonemodecanbeusedatthesametime:Controlmode,orPass-throughmode,orCommandInjection
mode.Ifyouchooseoneofthem,TPSseriallinkandlocalRS-232portwilloperateinthesamemode.
4.8.2.
RS-232 Modes
Pass-through Mode
Inpass-throughmode,thegivendeviceforwardsthedatathatiscomingfromoneofitsportstoanothersame
typeofport.ThecommandisnotprocessedbytheCPU.IncomingserialdataisforwardedfromlocalRS-232
porttotheTPSoutputportandvicaversainsidethetransmitter.
Control Mode
TheincomingdatafromthegivenportisprocessedandinterpretedbytheCPU.Themodeallowstocontrol
thetransmitterdirectly.LW2orLW3protocolcommandsareaccepted–dependingonthecurrentport
setting.
Command Injection Mode
Inthismode,thetransmitterworksasanRS-232bidirectionalconverter.TheTPSsignalisconvertedto
RS-232dataandviceversa.TCP/IPportnumbersaredefinedfortheserialports(TPSandlocal)forthis
purpose.E.g.thedefaultCommandInjectionportnumberofthelocalRS-232portis8001.Ifacommand
iscomingfromtheTPSinterfacewhichaddressestotheportno.8001,itwillbetransmittedtotheTxpin
ofthelocalRS-232port.Thatworksintheoppositedirectionofcourseandthemethodisthesameonthe
serialinterfaceoftheTPSportaswell.
#commandinjection
4.8.3. RS-232 Signal Transmission – Example
The Concept
TheSystemcontrollercansendcommandstothetransmitteranditisabletoremotecontroltheprojector
throughtheTPSreceiverviaRS-232.
Settings
▪
System controller
:wirelessIPconnectiontothesameEthernetasthetransmitterisconnectedto.Use
adedicatedsoftwaretool(e.g.aterminal)whichissuitableforsendingcommandsviaTCP/IPtoa
certainIP:portaddress.
▪
Transmitter
:settheRS-232modetoCommandInjectiononTPSoutputport.Setthefurtherparameters
(Baudrate,Databits,etc.)inaccordancewiththespecificationsoftheprojector.Thetransmitterwill
transmittheRS-232datatowardthereceiver.
▪
Receiver
:settheRS-232modetoPass-throughonRS-232port.
▪
Projector
:notetheRS-232portsettingthatisspecifiedbytheManufacturer.Connectasuitableserial
cablewiththeproperwiring.
RS-232 Recognizer
DIFFERENCE:
ThisfeatureisavailableonlyforSW4-TPS-TX240-PlusfromFWpackagev1.2.0b13.
ThistoolisabletorecognizeandstoretheincomingRS-232messageuntilthepreviouslydefinedstring
(delimiter)hasarrivedorthetimeouthaselapsedafterthelastdata.Thelastincomingserialdataisstored
anditcantriggeranactioninEventManager.