<< Click to Display Table of Contents >> Navigation:  Drawing Environment > Detailed command descriptions > Symbol Generator > Symbol data dialogue (main Symbol Generator dialogue) > Object data > Component type letter code

 

The component type letter code is defined for main symbols to be used by the automatic item designation generation feature. It simply specifies the default for the part of the product designation that precedes the counting number in the end of an item designation , like the "K" in -K1.

 

Typical component type letter codes are defined by IEC1346. Please note that the standard allows for the use of multiple characters. Please also note that cadett ELSA supports component type letter codes with up to five characters.

 

The older IEC750 standard also defined typical component type letter codes. The old standard was in fact more precise and in some ways more extensive, however also less general in character. Those differences have caused the influence of the old standard to still remain more than notable even today, 20 years after the official discontinuation.

 

Please refer to the table below, in which letter codes for which the standards mainly agree are marked with green. Letter codes where the standards mainly deviate are marked with red.

 

 

Please also note that IEC1346 additionally provides definitions for both a second and a third level of the component type letter code, which can be used to divide components and functions in a more detailed way than the first letter provides (the so-called "entry class").

 

The table below shows an example of a few three level class codes. For the entire list, please refer to IEC 81346-2.