Abstract： AS ISO 19014.4:2022 pdf download.Earth-moving machinery -Functional safety Part 4: Design and evaluation of software and data transmission forsafety-related parts of the control system. 3.1 bus system subsystem used in an electronic control...

AS ISO 19014.4:2022 pdf download.Earth-moving machinery -Functional safety Part 4: Design and evaluation of software and data

transmission forsafety-related parts of the control system.

3.1

bus system

subsystem used in an electronic control system for the transmission of messages (3.4)

Note 1 to entry: The bus system consists of the system unit (sources and sinks of information), a transmission path/transmission

medium (e.g. electrical lines, fiber-optical lines, radio frequency transmission) and the interface between message source/sink and

bus electronics (e.g. protocol application specific integrated circuit, transceivers).

3.2

encapsulated bus system

bus system (1.1) comprising a fixed number or a predetermined maximum number of bus participants connected to each other through a

transmission medium with well-defined and fixed performance/characteristics

3.3

failure of peer communication

situation in which the communication peer is not available

3.4

unintended message repetition

situation in which the same message (3.4) is unintentionally sent again

3.5

message repetition

situation in which the same message (3.4) is intentionally sent again

Note ito entry: This technique of resending the same message addresses failures such as message loss (11).

3.6

message

electronic transmission of data

Note 1 to entry: Transmitted data can include user data, address, or identifier data and data to ensure transmission integrity.

3.7

ECU

electronic control unit

electronic device (electronic programmable controller) used in a control system on earthmoving machinery.

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