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Working with 'ladder' logic

Project documentation that is based on the 'Ladder' logicThe 'Ladder' logic is part of the NFPA standard. 'Ladder' refers to the plot frame on which the schematics are mapped. It is divided into several subpages ('Ladders'). In the plot frame the 'Number of ladders' property is used to specify the number of subpages that are displayed. is often required for the USA market. EPLAN Cogineer Cloud offers you the possibility to generate such project documentation automatically. The 'Ladder' logic forms part of the NFPA standardNFPA stands for National Fire Protection Association. This is a standard in the USA for fire protection. that is widely used in America. However, to draw up the project documentation completely in accordance with the NFPA further steps are required, for example the usage of corresponding symbol libraries.

Preconditions

• You have activated the Enable ladder logic option in the settings.
• Your library consists of macros that are suitable for usage in the 'Ladder' logic.
• You have called the dialog DesignerConfigurators and sets of rules are defined on the basis of EPLAN macros in Designer. These form the basis for the configuration and the automatic generation of the project documentation. and are in the editing mode of a Macro-TypicalA Macro-Typical is an organization structure that contains information about the structure and the usage of the macros that are needed in the project. Each Macro-Typical maps a part of the machine / plant that is to be configured..

Procedure

1. Click the desired macro in the list of Elements in the workspace.
2. The view is extended with the structure and variable information that exists in the macro.
3. The 'Ladder' input field is located under input fields of the structure identifiers .

2. Enter the number of the 'Ladder' on which the macro is to be placed.
3. Specify the structure identifiers, position and values of the variables that are to be used for the macro.
4. The macro is placed in the schematic in accordance with your specifications.