Abstract

Adopts IEC 61131-5:2000 which specifies communication aspects of a programmable controller. It specifies from the viewpoint of a PC how any device can communicate with a PC as a server and how a PC can communicate with any device. In particular, it specifies the behaviour of the PC as it provides services on behalf of other devices and the services the PC application program can request from other devices.

RECONFIRMATION NOTICE
Technical Committee IT-006 has reviewed the content of this publication and in
accordance with Standards Australia procedures for reconfirmation, it has been
determined that the publication is still valid and does not require change.
Reconfirmed documents cannot be amended, but may be formally revised and a new
edition published.
Certain documents referenced in the publication may have been amended since the
original date of publication. Users are advised to ensure that they are using the latest
versions of such documents as appropriate, unless advised otherwise in this
Reconfirmation Notice.
Approved for reconfirmation in accordance with Standards Australia procedures for
reconfirmation on 14 July 2015.
The following are represented on Technical Committee IT-006:
Australia Safety Critical Systems Association
Australian Computer Society
Australian Industry Group
Australian Petroleum Production and Exploration Association
Consult Australia
Engineers Australia
Institute of Chemical Engineers Australia
Institute of Instrumentation, Control & Automation
ISACA
Process Control Society
The University of Queensland
Workplace Health and Safety Queensland

Scope

This part of IEC 61131 specifies communication aspects of a programmable controller. It
specifies from the viewpoint of a PC how any device can communicate with a PC as a server
and how a PC can communicate with any device. In particular, it specifies the behavior of the
PC as it provides services on behalf of other devices and the services the PC application
program can request from other devices. It is not intended to specify how any device can
communicate with any device using a PC as a router or gateway. The behavior of the PC as a
communication client and server is specified independent of the particular communication
subsystem, but the communication functionality may be dependent on the capabilities of the
communication subsystem used.
The scope of this part is a subset of the "communication model" shown in figure 2 of
IEC 61131-3; namely figures 2c and 2d are included in the scope of this part. Additionally, the means defined in this part of IEC 61131 may be used for communications within a program or
between programs.
The mapping of the PC behavior to some particular communications subsystems is provided in the annexes.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
ProductNote	Reconfirmed 22/10/2015. Reconfirmation Notice 22/10/2015
Pages
ISBN
Committee	IT-006
Supersedes	DR 03591 CP