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Programmable controller communication interface module which is configurable by a removable memory cartridge

  • US 5,485,590 A
  • Filed: 01/08/1990
  • Issued: 01/16/1996
  • Est. Priority Date: 01/08/1990
  • Status: Expired due to Term
First Claim
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1. An interface module for coupling a serial communication link to a programmable controller in which data is transmitted over the communication link using a defined communication protocol, said interface module comprising:

  • means for connecting a communication link to said interface module;

    a processor means for executing a program which controls the transfer of data between said interface module and the communication link according to the defined communication protocol;

    a first memory means for storing the program and data for the processor means;

    a memory cartridge that is removable without having to disassemble the interface module, said memory cartridge storing a program for said processor means which program defines the communication protocol;

    means for electrically interconnecting said processor means, said first memory means, said means for connecting and said memory cartridge; and

    means for transferring the contents of said memory cartridge into said first memory means.

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