Single-line Representation: Principle

The single-line representation of schematics is used to provide clear documentation of the electrical configuration of machines and plants. In contrast to multi-line representation, which shows all component connection points and the total number of connections of cable connections, single-line representation shows greatly simplified components with one, or a maximum of two, connections and cable connections with a single line.

After installation of EPLAN you can immediately access single-line schematic symbols, which are contained in a special symbol library. A special type of page is available for creating plant overviews - the "Schematic single-line (I)". Schematics in single-line representation are marked in the page navigator with the icon. The icon is also visible in a smaller form at placed functions in the different navigators, e.g. in the device navigator.

Single-line components can be inserted into single-line and multi-line schematic pages. Depending on the page type where a function created in the device navigator is placed, the representation type of the function is automatically adjusted to suit the page type. This means that the function is placed as a single-line symbol on a single-line schematic page and as a multi-line symbol on a multi-line schematic page.

If both single-line and multi-line symbol libraries are used in a project, and symbols with the same symbol number and function definition exist in both libraries, the representation type of the affected symbols can be changed using a swapping feature. A single-line symbol then becomes a multi-line symbol and vice-versa.

When there are high cabling densities in the schematic, connections and cable connections can be represented in a simplified form using bundles. Bundle connection points are used at the points where the connections or cable connections enter and exit the bundle. These can be assigned the connection point numbers or the connection colors/numbers of the cable as bundle connection point designations.

If a function appears in the schematic in multiple places on single-line, multi-line, or overview pages, then deviations in the function data in one of the representations can quickly occur. EPLAN allows the properties of these functions to be synchronized over the entire project.