CAT-285
RS-232 to RS-422 / 485 Converter

CAT-285 : RS-232 to RS-422 / 485 Converter
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5,670.00  Kč *
     CAT-285

  User Selectable RS-422 or RS-485
  RS-485 User Selectable 2 or 4-Wire Operation
  Intelligent Control of RS-485 Transmitter and Receiver
  Td and Rd LED Indicators
  DTE/DCE Compatible
  Data Rates up to 64k BPS

The CAT-285 is a unique interface converter that can be configured by the user to convert either RS-422 or RS-485 to RS-232. When operating in RS-485 mode, the CAT-285 has an “intelligent” mode which provides control of the RS-485 line. When configured to operate as an RS-232 to RS-422 interface converter, the CAT-285 converts full duplex data, Td and Rd, between RS-232 and RS-422. As an RS-232 to RS-485 converter, the unit can be configured for either 2 or 4-wire operation. In either mode, the CAT-285 allows control of the transmitter so that multi-dropped operation can be accommodated. The CAT-285 can be configured to control its data flow in one of two ways. The first is via the use of RTS, pin 4, of the RS-232 port. In this case, the RS-485 transmitter will turn ON when RTS is turned on. When RTS is OFF, the CAT-285 is in the receive mode. In the 4-wire mode, the receiver is always on. The second method of controlling the RS-485 transmitter is to turn it on when Td data is applied to the RS-232 port.

The receiver also operates differently depending on whether the mode is 2 or 4-wire. In the 2-wire mode, when no data is received by the RS-232 receiver, the RS-485 receiver is switched ON. When data is detected for transmission, the receiver is switched OFF. In the 4-wire mode, the RS-485 receiver is constantly ON while the transmitter is switched as required. The CAT-285 is equipped with a five position dip switch that is used to select the following: RS-422 mode: 4-wire RS-485 mode: 2-wire RS-485 mode: 4-wire RS-485 mode: controlled by RTS RS-485 mode: controlled by data 220 ohm terminator: in or out The CAT-285 is also equipped with a DTE/DCE switch to allow reversing pins 2 and 3 on the RS-232 interface. Td and Rd LED indicators help verify operation.

For complete product specifications see the Related Links section at the bottom of this page.


 Èíslo modelu  Cena (bez DPH)  Popis  Ks
 CAT-285    5,670.00 Kč   RS-232 to RS-422/485 interface converter
 DSUB-25-MF    2,640.00 Kč   DIN rail interface module, 25-pin
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 * využijte možnost konzultovat ceny pøímo s našimi prodejci  (tel: 596 311 899 - prodejní oddìlení, e-mail: viz. kontaktní informace)
 Pøíklad objednávky: (1) CAT-285 RS-232 to RS-422/485 interface converter = 5,670.00 Kč

 Literatura
   Stáhnout kompletní specifikace produktu ve formátu PDF
 Manuály
   Stáhnout  INTERFACE CONVERTER Superverter
 Souvísející odkazy
   DSUB: DIN Rail Interface Modules