LED RS232 - RS422 - RS485 indikator

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" colspan=2 height=80 BGCOLOR="#777777" TEXT="#080000" bgproperties="fixed" background="5f200500enpprp.gif"> <div> <A HREF="index.htm" TARGET="_top" TITLE="SPER Servis profesionalne elektronike Ra"><U><B>home</B></U></A><B>     |     </B><FONT SIZE="4" COLOR="#FFCC66" FACE="Trebuchet MS" ><B>SPER Servis profesionalne elektronike Rajak</B></FONT></div> <div> <A HREF="realizirani_uredaji.htm" TARGET="_top" TITLE="Realizirani uredaji"><U><B>Realizirani uredaji</B></U></A></div> <script defer src="respons.js"></script><P></P> </td> </tr><tr> <td valign="top" width=210 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> LED RS232 - RS422 - RS485 indikator</div> <bR> <div> <B><IMG SRC="097a3260.gif" border=0 width="163" height="38" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></div> <bR> <div> <A HREF="shema_komunikacijskog_indikatora.htm" TARGET="_top" TITLE="LED indikator RS232 RS422 RS485 shema"><U><B>shema</B></U></A></div> <bR> <div> <A HREF="realizirani_uredaji.htm" TARGET="_top" TITLE="Realizirani uredaji"><U><B>go back</B></U></A></div> <div style="text-align:CENTER; "><FONT SIZE="3" COLOR="#000000" FACE="Trebuchet MS">  <form method="get" action="http://www.google.hr/custom" target="google_window"> <table border="0" bgcolor="#99cc99"> <tr><td nowrap="nowrap" valign="top" align="left" height="32"> <bR> <br/> <input type="hidden" name="domains" value="www.sper.hr"></input> <label for="sbi" style="display: none">Unesite Vaše uvjete za pretraivanje</label> <input type="text" name="q" size="20" maxlength="255" value="" id="sbi"></input> </td></tr> <tr> <td nowrap="nowrap"> <table> <tr> <td> <input type="radio" name="sitesearch" value="" id="ss0"></input> <label for="ss0" title="Pretrai Web"><font size="-1" color="black">Web</font></label></td> <td> <input type="radio" name="sitesearch" value="www.sper.hr" checked id="ss1"></input> <label for="ss1" title="Trai www.sper.hr"><font size="-1" color="black">www.sper.hr</font></label></td> </tr> </table> <label for="sbb" style="display: none">Pošaljite obrazac za pretraivanje</label> <input type="submit" name="sa" value="Google pretraga" id="sbb"></input> <input type="hidden" name="client" value="pub-2650537455752702"></input> <input type="hidden" name="forid" value="1"></input> <input type="hidden" name="ie" value="ISO-8859-2"></input> <input type="hidden" name="oe" value="ISO-8859-2"></input> <input type="hidden" name="cof" value="GALT:#800080;GL:1;DIV:#37352E;VLC:99C9FF;AH:center;BGC:FFFFFF;LBGC:CAF99B;ALC:CC0000;LC:CC0000;T:44423A;GFNT:0066CC;GIMP:0066CC;LH:38;LW:163;L:http://www.sper.hr/logo.gif;S:http://;FORID:1"></input> <input type="hidden" name="hl" value="hr"></input> </td></tr></table> </form>  </FONT></div> <bR> <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-2650537455752702" crossorigin="anonymous"></script>  <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-2650537455752702" data-ad-slot="1584392831" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> </td> <td valign="top" height=400 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> <B>LED RS232 - RS422 - RS485 indikator</B></div> <div>      Za specifične potrebe napravili smo LED indikator serijske komunikacije za RS232 - RS422 - RS485. </div> <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-2650537455752702" crossorigin="anonymous"></script>  <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-2650537455752702" data-ad-slot="7117608876" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> <bR> <div>     Indikator  se koristi kod defektiranja problema na serijskoj komunikaciji. Za RS232 ima 8+8 LED indikatora za svaki polaritet signala. Za R422/RS485 indikaciju se koristi programabilni komparator za parove signala. Prema specifikaciji minimalni diferencijalni napon komplementarnih signala mora biti 200mV. Programabilni komparator se može podesiti trimerom da reagira od cca 20 do 880mV. </div> <div>     Sklop pokazuje svaki ispravan logički ulaz paljenjem LED dioda (HI ili LOW level). Ako je pogrešan logički nivo (premali napon), odgovarajuća LED dioda se ne pali (ni HI ni LOW ne svijetli). Za RS422 sklop se napaja se iz 9V baterije i u neaktivnom stanju troši cca 4mA.</div> <div>    Provjera komunikacije se vrši ubacivanjem sklopa u komunikacijski put. Ako se sumnja u pogrešno povezane ulaze i izlaze, sklop spaja samo na jedan izvor signala i zatim zabilježi aktivirane izlazne signale. Zatim se taj kabel odvoji i spoji drugi te provjeri da li koristi iste signale. Ako su isti signali aktivirani, to je sigurno neispravno kod RS232 ili RS422 komunikacije. Kod RS485 se isti par žica koristi za odašiljanje i primanje te je protokolom (half duplex) određeno vremensko dijeljenje istih žica za različiti smjer komunikacije.</div> <bR> <div>     RS232:  </div> <div> --------------</div> <div> TX = 3</div> <div> RX = 2</div> <div> DTR = 4</div> <div> DSR = 6</div> <div> RTS = 7</div> <div> CTS = 8</div> <div> DCD = 1</div> <div> RING = 9</div> <div> GND = 5</div> <bR> <div>   RS422:</div> <div> ----------------</div> <div> TXD- = 1</div> <div> TXD+ = 2</div> <div> RXD- = 4</div> <div> RXD+ = 3</div> <div> RTS- = 6</div> <div> RTS+ = 7</div> <div> CTS- = 9</div> <div> CTS+ = 8</div> <div> GND = 5</div> <bR> <div>   RS485:</div> <div> ----------------</div> <div> TXD/RXD- = 1</div> <div> TXD/RXD+ = 2</div> <div> GND = 5</div> <bR> <div> karakteristike:</div> <bR> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">ulaz/izlaz: DB9 RS232 / RS422 / RS485</div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">impedancija: 4700 R minimalno</div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">RS232 indikacija: TX, RX, DTR, DSR, RTS, CTS, DCD, RING</div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">RS422 indikacija: RXD, TXD, CTS, RTS</div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">RS485 indikacija: RXD, TXD</div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">napajanje (RS422,RS485): 9V, 4mA + 1mA/uključenoj LED diodi</div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">dimenzije: 140*70*35 mm (D*Š*V)</div> <div> <A HREF="shema_komunikacijskog_indikatora.htm" TARGET="_top" TITLE="LED indikator RS232 RS422 RS485 shema"><U>shema</U></A></div> <bR> <div> <IMG SRC="9eb5eba0.jpg" border=0 width="350" height="186" ALT="LED RS232/RS422/RS485 indikator" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> Prikazani sklop ima ugrađene 9 i 25 pinske muške i ženske konektore (9 pinski se nalaze na pozadini).</div> </td> </tr></table></body>