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PC Based Industrial Automation

Featured Product

This months featured product is the ADAM-4520 RS-232 to RS-485 converter.
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ADAM-4542+ Single-mode fiber Optic to RS-232/422/485 Converter Module

Download PDFDownload the ADAM-4542+ data sheet.


ADAM-4542+ ModuleFiber optic transmission offers the benefits of wide bandwidth, immunity to EMI/RFI interference, and secure data transmission. ADAM-4542+ can be used as a RS-232/422/485 point-to-point or point-to-multipoint connection for transmitting and converting full/half-duplex signals and their equivalents within a fiber optic environment. Fiber optics is the perfect solution for applications where the transmission medium must be protected from electrical exposure, lightning, atmosphere. ADAM-4542+ is specifically designed to link various machinery equipped with a RS-232/422/485 communication port (such as computer systems or manufacturing machines). Using standard SC type fiber connector, the module's fiber optic ports can accommodate a wide range of fiber optic cable sizes, including 62.5/125, 250/125, 100/140 mm.



  • Power Input Unregulated 10 - 30V DC.
  • Connectors
    1 x plug-in terminal block (#14 - 22AWG) for RS-232/422/485
    1 x SC fiber connector
  • Power Consumption 3.0W @ 24 VDC
  • Humidity 5 to 95% RH
  • Operating Temperature -10 to 70°C
  • Storage Temperature -25 to 85°C
  • Mounts easily on a DIN-rail, panel or piggyback

Serial Communications

  • Communication Mode Asynchronous
  • Baud Rates
    1200, 2400, 4800, 9600
    19.2k, 38.4k, 57.6k, 115.2k,
    and RS-232/422 mode (switchable)
  • Transmission Mode Full/Half Duplex, bidirectional

fiber Optic Communication

  • Optical Power Budget 15dB
  • Transmission Distance 15km
  • Transmission Mode Single-mode (Send and Receive)
  • Wavelength 1310nm