Packet communication between a collecting unit and a plurality of control devices and over the power supply line

• US 20070019613A1
• Filed: 03/24/2004
• Published: 01/25/2007
• Est. Priority Date: 03/31/2003
• Status: Active Grant

• Current Assignee: Hitachi Energy Limited
• Original Assignee: ABB Technology AG (ABB Limited)
• Inventors: Frezzolini, Aleandro
• Granted Patent: US 8,902,885 B2
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04B 2203/5408 using protocols
• CPC Class Codes: H04B 2203/5441 Wireless systems or telephone
• CPC Class Codes: H04B 2203/5458 Monitor sensor; Alarm systems
• CPC Class Codes: H04B 3/542 the information being in digital form
• CPC Class Codes: H04L 12/403 with centralised control, e.g. polling

Abstract

A communication method between a collecting unit (5) and a plurality of control devices (7i), each of which is associated with at least an electrical device (1i), via the power line. Messages are exchanged between the collecting unit (5) and the control devices (7i), each of which contains at least: a progressive message number (Pr_N); an addressee identification number (ID_addressee); a portion of information content and/or executable commands (M4). A specific identification number (ID_i) is assigned to each control device and to the collecting unit. The messages are therefore addressable selectively to a specific control device via said addressee identification number.

Claims