International Standards and Conformity Assessment for all electrical, electronic and related technologies

TC 3

Information structures and elements, identification and marking principles, documentation and graphical symbols

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PT 62744 Project Leader & Members

Project Leader

Mr Sven-Anders Lejdeby
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Mr Hiroaki IkedaJP
Mr John Charles PerryGB
Mr Arto SirviöFI
Mr Mikio TakaokaJP
Mr Yoshikazu YamamotoJP

Title & Task

PT 62744

Representation of states of objects by graphical symbols


To draft general rules for the application of the dynamic representation of graphical symbols.
- for diagrams in IEC 60617 in co-operation with TC 3/MT 60617 and
-for use on equipment in IEC 60417 in co-operation with SC/MT 60417

The general rules are to be applied to already existing graphical symbols as well as to new graphical symbols foreseen for a dynamic representation.

-The rules include but are not limited to: change of the shape of a graphical symbol;
- change of the colour of a graphical symbol;
- change of the appearance of a graphical symbol;
- associated sound to a graphical symbol;
- add-in or change of alphanumerical characters letters related to a graphical symbol and
- change of the size of a graphical symbol.

Taking into account such implications as:

- in the visual display of SCADA and industrial process control systems;
- in the visual display computer-aised systems, eg debugging of circuit diagrams, ladder diagrams for PLC equipment etc. and
- on display equipment for its operation and/or monitoring.

Excluded: Development of new graphical symbols for dynamic representation..