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Method of allocating computer addresses to units of a system for running an industrial installation

  • US 6,581,107 B1
  • Filed: 07/27/1999
  • Issued: 06/17/2003
  • Est. Priority Date: 07/28/1998
  • Status: Expired due to Fees
First Claim
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1. A method of allocating computer addresses to units of a system for running an industrial installation, the units being interconnected by a local communications architecture, the method being applicable to units which are originally provided with a hardware address in digital form, the method comprising:

  • broadcasting an address request fame over the local communications architecture by a requesting unit seeking to obtain its own computer address, said address request frame including a destination UDP pots address relating to one of the units acting as an address allocator in the local architecture, a source UDP port address specific to the requesting unit, mid data characteristic of an address request;

    receiving the request in an application in the allocation unit, said application recognizing the UDP port address that belongs to said allocation unit;

    said allocation unit broadcasting an allocation frame having the same structure as the request frame over the local communications architecture, said allocation frame including the UDP port address of the requesting unit, at a destination level, and data corresponding to an allocation unit IP address;

    receiving the data corresponding to the IP address of the allocation unit in the requesting unit on the requesting unit recognizing its own UDP port address in the destination level of the broadcast allocation frame, wherein the requesting unit assigns its own IP address for storage and operating purposes by taking into account the IP address data received from the allocation unit on recognizing its own port address, by substituting hardware address data specific to the requesting unit for the hardware address data of the allocation unit in the IP address as communicated for said allocation unit.

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