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Systems, devices and methods for automatically addressing serially connected slave devices

A series connection and automatic addressing technology, applied in transmission systems, digital transmission systems, instruments, etc., can solve the problems of expensive implementation and inflexibility

Pending Publication Date: 2022-02-25
ASTEC INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this approach requires analog-to-digital converters in controllers 108A, 108B, and 108C, which makes implementation expensive and inflexible

Method used

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  • Systems, devices and methods for automatically addressing serially connected slave devices
  • Systems, devices and methods for automatically addressing serially connected slave devices
  • Systems, devices and methods for automatically addressing serially connected slave devices

Examples

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Embodiment Construction

[0017] Example embodiments will now be described more fully with reference to the accompanying drawings.

[0018] Example embodiments are provided so that this disclosure will be thorough, and will fully convey the scope to those who are skilled in the art. Numerous specific details are set forth, such as examples of specific components, devices and methods, to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms and that neither should be construed to limit the scope of the disclosure. In some example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.

[0019] The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a"...

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PUM

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Abstract

A system for automatically addressing serially connected slave devices includes a master device and multiple slave devices each including a serial communication transceiver, an address input port, an address output port, and a controller. The system also includes a serial communication wiring bus connected between the serial communication transceivers of the master and slave devices, and at least one digital address line connected between the address input ports and the address output ports. Each controller is configured to receive a PWM or PFM signal from a previous one of the multiple slave devices, determine an address for the slave device including the controller according to the received PWM or PFM signal, and transmit a PWM or PFM signal indicative of the determined address to a subsequent one of the multiple slave devices.

Description

technical field [0001] The present disclosure relates to systems, devices and methods for automatic addressing of serially connected slave devices. Background technique [0002] This section provides background information related to the present disclosure which is not necessarily prior art. [0003] Traditionally, RS-485 slave devices are addressed by hard-wired address lines. The address lines connect to the RS-485 slave device's controller, which decodes the addressing signals from the hardwired address lines to determine its assigned address. An example system 100 is illustrated in FIG. 1 in which each slave device 104A, 104B, and 104C receives addressing signals from an external device via four or more hardwired address lines 110 . [0004] In this approach, increasing the number of slave devices requires more and more hardwired address lines. This makes wiring complex and expensive, especially if the devices are located far from each other. In some cases, a DIP swi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L61/5038
CPCG06F13/4282G06F13/4247H04L12/40019H04L12/40169H04L2012/40215
Inventor V·V·维瓦尔J·L·大卫F·X·S·德拉马
Owner ASTEC INT LTD