ISO/IEC 14543-3-6:2007 情報技術—家庭用電子システム（HES）アーキテクチャ—パート3-6：メディアおよびメディア依存層— HESクラス1、ツイストペアに基づくネットワーク | ページ 6

3.1.1

HES Class 1 Twisted Pair Type 0

Twisted Pair medium Twisted Pair Type 0 (TP0) is a physical layer specification for data and power transmission on a single twisted pair, allowing asynchronous character-oriented data transfer in a half duplex bi-directional communication mode, using a specifically unbalanced/unsymmetrical base-band signal coding with collision avoidance under SELV conditions

3.1.2

HES Class 1 Twisted Pair Type 1

Twisted Pair medium Twisted Pair Type 1 (TP1) is a physical layer specification for data and power transmission on a single twisted pair, allowing asynchronous character-oriented data transfer in a half duplex bi-directional communication mode, using a specifically balanced/symmetrical base-band signal coding with collision avoidance under SELV conditions

3.1.3

distributed power supply

the bus is powered in a distributed way by a number of the devices connected to the line (compared to a centralised power supply)

3.1.4

Logical Tag Extended HEE

usage of the L_Data_Extended frame dedicated to extended group addressing

3.1.5

Remote Powered Devices

remote Powered Bus Devices (RPD) do not extract their energy for the application circuit and the bus controller from the bus but from another independent source of energy, for example, mains. Owing to the reduced DC power consumption of RPD, a bus line equipped with such devices requires less power from the installed Power Supply Unit (PSU). The connection of bus-controller and application to the same electrical potential reduces the effort of galvanic separation in RPD

3.1.6

TP0 C Factor

3.1.7

TP0 Character

11 bit set including 8 data bits, 1 check bit (odd parity bit) and two synchronization bits (start and stop bits)

3.1.8

TP0 Distortion

percentage ratio of the deviation time between the instant a transition occurs and the ideal transition instant, and the bit duration (~208 µ s ); the distortion is measured for each bit of a character, starting with the start bit

3.1.9

TP0 Inter-Frame Time

time between the end of a frame (end of stop bit for the last character) and the beginning of the next frame (beginning of the start bit of the first character)

3.1.10

TP0 Line Load

percentage ratio representing the proportion of actual character transmission during a specified integration time interval

3.1.11

TP0 Odd parity bit

check bit whose value is such that there is an odd number of logic"0" within the data and parity fields

3.1.12

TP0 Repeater

connects a primary segment to a secondary segment

3.1.13

TP1 Backbone Couplers

15 backbone couplers can be used to couple up to 16 zones to a full sized TP1 network

3.1.14

TP1 Backbone Line

the main line of the inner zone is called backbone line

3.1.15

TP1 Bridge

four TP1-64 physical segments can be combined to a line by using bridges; 256 devices can then be connected to such a line

3.1.16

TP1 Line

a TP1 line consists of a maximum of 256 devices, either directly connected in case of TP1-256 or separated over 4 physical segments in case of TP1-64, each with 64 devices

3.1.17

TP1 Line Couplers

routers that combine lines to a zone are called line couplers

3.1.18

TP1 Logical Unit

converts the serial bit stream to octets and octets to the serial bit stream, which is a serial stream of characters

3.1.19

TP1 Medium Access Unit

converts information signals to analogue signals and vice versa, typically extracts DC power from the medium

3.1.20

TP1 Main line

the inner line of a zone is called main line

3.1.21

TP1 Physical Segment

a physical segment is the smallest entity in the TP1 topology. To a physical segment of TP1-64 up to 64 devices can be connected. To a physical segment of TP1-256 up t 256 devices can be connected

3.1.22

TP1 Polling Master

the device transmitting the Poll_Data frame is called the TP1 Polling master or Poll_Data master

3.1.23

TP1 Polling Slave

the device transmitting a Poll_Data character is called the TP1 polling slave or Poll_Data slave

3.1.24

TP1 Router

a router acknowledges frames on data link layer and transmits the received frame on the other side of the router, provided the device associated with the destination address is located on the other side

3.1.25

TP1 Sub-line

the outer lines of a zone are called sub-lines or lines

3.1.26

TP1 Zone

16 TP1 lines can be connected to a zone by using 15 routers