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Converter, RS232 To RS-485, 115 Kbps


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Technical Datasheet:
A451   Datasheet
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Technical Docs (1)

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CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
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Product Overview

The A451 is a RS-232 to RS-485 Interface Converter provides multidrop up to 32 drivers and 32 receivers at distances over 1200 metres. It device's internal jumper settings allow the use of either standard or crossed Ethernet cables. The device is used to connect RS-232 devices over a long distance using Ethernet cables. The monitor mode of the device is a special bus snooping setting that allows an installer or designer to look at what is happening on both pairs of a 4-wire RS-485 bus.
  • Supports both 4-wire and 2-wire operation
  • Transient protection on RS-485 lines
  • Transmits data at up to 115Kbps
  • Non-powered RS-485 operation over distances up to 100m
  • Switchable DCE/DTE selection for RS-232 port
  • Switchable termination resistors for RS-485 port
  • RJ-45 connectors on RS-485 port
  • LED indicators for data activity
  • Monitor mode allows problem diagnosis on the RS-422/485 bus


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