README hello.plc

Introduction

This sample project shows the ctrlX Data Layer access to ctrlX PLC variables of a ctrlX CORE or ctrlX CORE^virtual.

Prerequisites

• ctrlX WORKS with ctrlX PLC Engineering installed.
• ctrlX CORE with app PLC installed.
• IMPORTANT: Do not use this project in a control that is in production or in which the PLC program or its variables must not be changed.

Function Description

The app browses all PLC variables mapped to the ctrlX Data Layer.

If the attached app 'hello_plc_application' has been installed, its variables will be overwritten:

• "HelloDeveloper" is written to each variable of type STRING.
• "1337" is written to each variable of type INT16 (ctrlX-Plc: INT).
• "0.815f" is written in each variable of type FLOAT32 (ctrlX-Plc: REAL).

All variables with another data type are ignored.

Debug and Run

1. Build the executable via cmake plugin.
2. Launch the app with the debugger attached by pressing F5.

Build and Install the Snap

Build and install the snap like described here.

Test the Snap

Read Access to Variables of your PLC Application

• Install your default PLC application in the ctrlX CORE.
• Install this sample project as snap or start it in the App Build Environment

All DL variables will be listet but not overwritten.

Read/Write Access to the Variables of our Test PLC Application

• Download the file hello_plc_application.export from sub folder plc_application/
• Create a new PLC project with ctrlX PLC Engineering.
• Select the node PLC Logic in the project tree with the cursor.
• Click main menu item Project -> Import... and import the whole content.
• Login into your PLC runtime (project will be compiled and downloaded).
• Start your PLC application (F5) - be sure your ctrlX is in Operting
• Install this sample project as snap or start it in the App Build Environment

All DL variables will be listet, INT, REAL (Float) and STRING values are overwritten.

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License

SPDX-FileCopyrightText: Bosch Rexroth AG SPDX-License-Identifier: MIT