Implementing the POUs

This article is about the workflow phase "module implementation". This phase applies to an application and a library.

In the phase "module implementation", the individual modules are developed in accordance with the specification and requirements for the module.
The modules are created as POUs in logi.CAD 3 . It is recommended to create a POU in ST or FBD.

How to implement the →POUs:

1. Start logi.CAD 3. See Warning 1.
   Details on starting logi.CAD 3: See logi.CAD 3 user documentation, "Starting the development environment and the runtime environment", section "Starting logi.CAD 3"

2. Create a project based on a template for your safety PLC. Details on creating a project: See logi.CAD 3 user documentation, "Creating new project"

3. In this logi.CAD 3 project, create the requested POUs of the application.
   logi.cals recommends to create a POU in ST or FBD. When you want to create a POU in C, there are specific notes to be followed. See Warning 2.

   Type of POU	Details: see logi.CAD 3 user documentation,
   ST	Creating application in ST-editor
   FBD	Creating application in FBD-editor

   See the logi.CAD 3 user documentation on how to use the functionalities of logi.CAD 3 to create the ST-code or FBD-logic within the appertaining POU.