W&T connects
Interfaces for TCP/IP, Ethernet, RS-232, RS-485, USB, 20mA, glass and plastic fiber optic cable, http, SNMP, OPC, Modbus TCP, I/O digital, I/O analog, ISA, PCI
Data sheet:

RS232 <> RS422/RS485 interface, compact version

Serial interface - compact and universal

The Interface connects RS232 devices to RS422 and RS485 components with minimal installation space. Both interfaces are implemented as 25-pin SUB-D connectors.



  • 1 x RS232
    • 25-pin Sub-D plug
  • 1 x RS422/RS485
    • 25-pin Sub-D socket
    • RS422 - with handshake
    • RS485 - 2/4-wire handshake or automatic control (with echo)

Management and connectivity:

  • No re-configuration of transmission parameters required
  • Integrated termination network for RS485
  • Can be used as "non-intelligent" converter for RS485 fieldbuses <> RS232
  • Convenient adapter plug solution

Standards & more

  • Conforms to standards both in office and industrial environments:
    • High noise resistance per EN 61000-6-2
    • Low noise emission per EN 55032:2015 + A1 Cl. B, EN 61000-3-2 & EN 61000-3-3
  • 5 year guarantee

Technical data

Connections and displays:

  • Serial Port A:
    • RS232 Interface
    • 25-pin SUB-D plug, DCE assignment
  • Serial Port B:
    • RS422/RS485 interface
    • 25-pin SUB-D socket
  • Switching time:
    • approx. 10µs for switching from data send to receive
    • for RS485 automatic control
  • Baud rate:
    • 0 to 115200 Baud
  • Data format:
    • any format
  • Galvanic isolation:
    • none
  • Supported signals:
    • RxD, TxD, CTS, DTR
  • Termination:
    • Integrated termination network for RS485
  • Power supply:
    • Supplied power adapter
  • Current consumption:
    • approx. 70mA

Housing and other data:

  • Housing:
    • DBF25 dual housing, 63 x 54 x 16mm (L x W x H)
  • Enclosure rating:
    • IP40
  • Weight:
    • approx. 150g incl. power adapter
  • Scope of delivery:
    • Interface RS232<>RS422/RS485 Compact
    • AC adapter for office use (only with Euro plug)
    • Gender Changer Bu/Bu, model 11770
    • The 11574 adapter cable for connecting the Interface to
    • 9-pin terminals is provided at no cost.
    • Please specify in your order.


*Net unit price for
commercial users
  • Cable and Connector Accessories

    • 9-pin adapter cable for compact converters
    • 11574
    • optional

* Our offering is intended only for commercial users. We will be happy to refer private end customers to trading partners through whom our products can be purchased.