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AS IEC 61131.1:2004 (R2015)

AS IEC 61131.1:2004 (R2015)

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Programmable controllers – General information

Published By Publication Date Number of Pages
AS 2004-03-22 25
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Adopts IEC 61131-1:2003 which establishes the definitions and identifies the principal characteristics relevant to the selection and application of programmable controllers and their associated peripherals.

Scope

This Part of IEC 61131 applies to programmable controllers (PLC) and their associated peri-pherals such as programming and debugging tools (PADTs), human-machine interfaces (HMIs), etc., which have as their intended use the control and command of machines and industrial processes.
PLCs and their associated peripherals are intended to be used in an industrial environment
and may be provided as open or enclosed equipment. If a PLC or its associated peripherals
are intended for use in other environments, then the specific requirements, standards and
installation practices for those other environments must be additionally applied to the PLC and its associated peripherals.
The functionality of a programmable controller can be performed as well on a specific
hardware and software platform as on a general-purpose computer or a personal computer
with industrial environment features. This standard applies to any products performing the
function of PLCs and/or their associated peripherals. This standard does not deal with the
functional safety or other aspects of the overall automated system. PLCs, their application
programme and their associated peripherals are considered as components of a control system.
Since PLCs are component devices, safety considerations for the overall automated system
including installation and application are beyond the scope of this Part. However, PLC safety
as related to electric shock and fire hazards, electrical interference immunity and error
detecting of the PLC-system operation (such as the use of parity checking, self-testing
diagnostics, etc.), are addressed. Refer to IEC 60364 or applicable national/local regulations
for electrical installation and guidelines.
This Part of IEC 61131 gives the definitions of terms used in this standard. It identifies the
principal functional characteristics of programmable controller systems.

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AS IEC 61131.1:2004 (R2015)
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