ISO 11783-1:2017 農林業用のトラクターと機械—シリアル制御と通信データネットワーク—パート1：モバイルデータ通信の一般標準 | ページ 6

3.1

address

8-bit field used to define the source or destination of a message

3.2

alarm mask

object that defines alarm information for display on a virtual terminal

3.3

auxiliary input unit

autonomous control function (3.10) providing auxiliary controls for common use that can also be physically located within an electronic control unit (3.19) , or on the virtual terminal (3.67)

3.4

auxiliary new

AUX-N

functionality (3.26) specific to Type 2 auxiliary controls defined in ISO 11783-6

3.5

auxiliary old

AUX-O

functionality (3.26) specific to Type 1 auxiliary controls defined in ISO 11783-6

3.6

char

single character whose size is 1 byte

Note 1 to entry: Commonly used for ISO/IEC 8859 characters (e.g. 41₁₆ in ISO/IEC 8859-1 represents “A”).

3.7

character

single text grapheme or symbol, as in an alphabet

Note 1 to entry: Size is variable based on the encoding scheme. See char (3.6) and WideChar (3.68) .

3.8

client

control function on the mobile implement bus that uses the services of a server or master

3.9

code plane

group of 65536 possible character codes

Note 1 to entry: Unicode/ISO/IEC 10646 organizes the characters in 17 code planes numbered 0 to 16.

3.10

control function

CF

function that performs operations to complete a specific function on or within devices

Note 1 to entry: A control function has one unique address on the network.

3.11

data dictionary

DD

listing of data variables and their identifiers

Note 1 to entry: The data dictionary is defined in ISO 11783-11.

3.12

data dictionary element

DDE

parameter defined in the data dictionary (3.11)

Note 1 to entry: The parameter is identified by a data dictionary identifier (3.13) .

Note 2 to entry: This parameter is used for control/monitoring functions via the Process Data Message (PDM).

3.13

data dictionary identifier

DDI

16-bit number that uniquely identifies a data dictionary element (3.12)

Note 1 to entry: The data dictionary identifier is used in the process data message to identify the data dictionary element for which a value or command is communicated.

Note 2 to entry: See http://www.isobus.net/ for data dictionary identifiers.

3.14

data logger

DL

control function (3.10) defined specifically to perform data logging functionality that uses the task controller (3.59) process data (3.50) protocol

Note 1 to entry: A DL can be part of a telemetry system or can be a separate CF collecting device descriptions and process data messages in addition to logging data from any other parameter groups (3.43) that are broadcasted or can be requested on the ISO 11783 network. The DL is defined in ISO 11783-10.

3.15

data mask

top-level user interface object that contains other objects for display and operator interaction on a reserved area of the virtual terminal

3.16

data page

DP

1-bit field in the identifier portion of the CAN arbitration field that is combined with the extended data page (3.21) bit to select one of four pages of message definitions

3.17

destination address

da

protocol data unit (3.51) specific field in the CAN identifier used to indicate the address of the intended receiver of the CAN message

3.18

device

mechanical system such as tractor (3.64) , trailer or implement (3.30) , or an independent sensor system

3.19

electronic control unit

ECU

electronic item consisting of a combination of basic parts, subassemblies and assemblies packaged together as a physically independent entity

Note 1 to entry: An ECU can contain one or more control functions (3.10) .

3.20

equipment

device (3.18) or machine (3.33) that performs a specific field operation

Note 1 to entry: It can be a tractor (3.64) or an implement (3.30) attached to a tractor or self-propelled machine.

3.21

extended data page

EDP

1-bit field in the identifier portion of the CAN arbitration field that is combined with the data page (3.16) bit to select between multiple pages of decoding of the remaining sections of the identifier field

Note 1 to entry: All ISO 11783 messages set the extended data page bit to zero on transmit.

3.22

extended transport protocol

ETP

message transfer protocol used for the transfer of parameter groups (3.43) that have 1786 to 117440512 bytes of data

3.23

farm management information system

FMIS

office computer system used by a farmer or contractor that includes the software for farm management, such as book keeping, payroll, resource management for machines, products, workers, field management, geographical information system, decision support systems and task management

3.24

file server

FS

control function (3.10) on the mobile implement bus that provides storage for files and uses a set of commands for the handling of, and access to, these files

3.25

function

action or activity by which equipment (3.20) fulfils one of its intended purposes

3.26

functionality

capability of units or items of a mobile implement control system (3.36) on an ISO 11783 network that performs a specific function (3.25) or group of functions and is offered to end users in the market

3.27

functionality characteristic

distinction between the functionality (3.26) capabilities of a control function (3.10) as a result of changes to ISO 11783

3.28

functionality generation

indication of the capability or level of a control function’s (3.10) functionality characteristic (3.27)

3.29

group extension

GE

protocol data unit-specific field (3.46) that is used as part of the information necessary to determine the parameter group number (3.44)

3.30

implement

device (3.18) or machine (3.33) that performs a specific operation and which is normally attached to a tractor (3.64)

3.31

industry group

ig

allocation of devices (3.18) and their functions used by a specific industry

3.32

initial address

source address of a control function (3.10) in a self-configuring electronic control unit (3.19) that is determined during initial power up of the ECU and which is used on the subsequent power up

3.33

machine

device (3.18) that uses or applies mechanical power, which has a definite function and which performs a specific kind or kinds of work

3.34

message

one or more CAN data frames used to communicate information from the same parameter group number (3.44)

Note 1 to entry: The information related to a single parameter group number to be transferred on the network can take several CAN data frames.

3.35

minimum control function

functionality (3.26) specific to ISO 11783-3, ISO 11783-5, and ISO 11783-12

3.36

mobile implement control system

MICS

devices (3.18) that are coupled together by, and that use, the ISO 11783 network

3.37

multi-packet message

message used when more than one CAN data frame is required to transmit all data specific to a given parameter group number (3.44)

Note 1 to entry: Each CAN data frame has the same CAN identifier but contains different data in each packet.

3.38

NAME

8-byte entity which provides an indication of each control function (3.10) of an electronic control unit (3.19)

Note 1 to entry: The NAME is used to provide a description of the control function and to provide a numerical value that can be used for arbitration of conflicting addresses.

3.39

Negative acknowledgement

response to a message that indicates that it has not been understood or that a requested action cannot be performed

3.40

node

physical connection of an electronic control unit (3.19) to the network

3.41

non-configurable address

source address (3.56) of a control function (3.10) that cannot be altered by any means

3.42

packet

single CAN data frame of a multi-frame message

Note 1 to entry: This can also be a message if the data content to be transferred is in one CAN data frame.

3.43

parameter group

PG

identification of the data in a single-packet or multi-packet message

Note 1 to entry: Parameter groups are not dependent on the source address (3.56) field allowing any source to send any parameter group.

Note 2 to entry: Parameter groups include data, commands, requests, acknowledgements, and negative acknowledgements (3.39) .

Note 3 to entry: See http://www.isobus.net/ for parameter group assignments.

3.44

parameter group number

PGN

3-byte or 24-bit representation of the data page (3.16) , extended data page (3.21) , protocol data unit format (3.45) and group extension (3.29) fields that identifies a particular parameter group (3.43)

3.45

PDU format

protocol data unit format

PF

8-bit field in the 29-bit CAN identifier that identifies the format of the protocol data unit

Note 1 to entry: It is also one of the fields used to determine the parameter group number (3.44) that labels the data field of the CAN data frame.

3.46

PDU specific field

protocol data unit-specific unit field

ps

8-bit field in the 29-bit CAN identifier that is either a destination address (3.17) or group extension (3.29)

3.47

PDU1 format

protocol data unit format (3.45) used for messages which are to be sent to a destination address (3.17)

Note 1 to entry: The protocol data unit-specific field contains the destination address (specific or global).

3.48

PDU2 format

protocol data unit format (3.45) used to send information by the group extension (3.29) technique

Note 1 to entry: The protocol data unit specific field contains the group extension.

3.49

preferred address

source address (3.56) of a control function (3.10) in electronic control units that is designated by ISO 11783 to be used as default on first connection to the network

Note 1 to entry: Control functions with a preferred address are listed in the ISO 11783 database at http://www.isobus.net/ .

3.50

process data

measured data and/or set point commands communicated by control functions (3.10)

3.51

protocol data unit

PDU

ISO 11783 specified data field in a CAN data frame that defines the transmitted information

3.52

safe state

operating mode of a system with an acceptable level of risk for operator or bystander even when the control system fails or partly fails

3.53

self-configurable address

source address (3.56) of a control function (3.10) , determined by internal calculations during initial power up of the electronic control unit (3.19) , which the control function then claims as that address on the network

3.54

sequence control system

system with sequence control master and one or more clients performing the sequence control functionality as described in ISO 11783-14

3.55

soft key mask

object that contains soft key objects for display on a virtual terminal

3.56

source address

sa

8-bit field in the 29-bit CAN identifier that provides for the unique identification of the source of a message

Note 1 to entry: The source address field contains the address of the control function (3.10) that is sending the message.

3.57

surrogate pair

32-bit code for characters composed of a 16-bit high pair and a 16-bit low pair

Note 1 to entry: UTF-16 encoding of characters in code plane 1 to 16.

Note 2 to entry: UTF-16 character encoding scheme defined by ISO/IEC 10646.

3.58

suspect parameter number

SPN

19-bit number used to identify a particular element, component, or parameter associated with a control function (3.10)

Note 1 to entry: Suspect parameter numbers are assigned to each individual parameter in a parameter group (3.43) , and to items that are relevant to diagnostics but are not presently a parameter in a parameter group.

3.59

task controller

TC

control function (3.10) on the mobile implement control system (3.36) that is responsible for the sending, receiving and logging of process data

3.60

task controller basic

TC-BAS

functionality (3.26) specific to ISO 11783-10 defined capabilities which does not require geographic reference

3.61

task controller geo

TC-GEO

functionality (3.26) specific to ISO 11783-10 defined capabilities which requires geographic reference

3.62

task controller section control

TC-SC

functionality (3.26) specific to ISO 11783-10 section control specifications

3.63

terminating bias circuit

TBC

circuit required at each end of an ISO 11783 network segment that provides bias voltages for the CAN_H and CAN_L signals and the common mode impedance termination for the respective conductors

3.64

tractor

machine (3.33) that is the primary source of power in a connected system

Note 1 to entry: A connected system consists of a tractor (3.64) and can include one or more implements (3.30) .

Note 2 to entry: Self-propelled agricultural equipment (3.20) or construction equipment includes a primary source of power.

3.65

universal terminal

UT

functionality (3.26) specific to ISO 11783-6 defined capabilities excluding auxiliary controls

3.66

vehicle

machine (3.33) for the transportation of goods and people on land

3.67

virtual terminal

VT

electronic control unit (3.19) consisting of a graphical display and input controls providing the capability to display information to and retrieve data from an operator for a connected implement (3.30) or working set (3.70)

3.68

WideChar

single character with a size of 2 bytes encoded in little endian order

Note 1 to entry: Two WideChars can be combined to indicate character codes exceeding 16-bit

3.69

WideString

zero or more characters composed of the primitive type WideChar (3.68) always preceded by the byte order mark FEFF₁₆

3.70

working set

several control functions (3.10) in one or more electronic control units (3.19) acting as distributed processes providing a single application

Note 1 to entry: All control functions that are part of a working set, whether or not they are in separate electronic control units, are identified as members by the working-set master.

3.71

working-set master

coordinator of the communications of a working set (3.70)

Note 1 to entry: The source address of the working-set master is used to identify the working set and, for others, to communicate with the working set.

Note 2 to entry: The working-set master is identified by a specific control function (3.10) within a specific electronic control unit (3.19) .