Declaration of Variables Variable declaration: Where and how? You can declare variables at the following locations: Declaration part of a POU The Declare Variable dialog helps you with this. Tip If yo

Creating Source Code in IEC Source code: By "source code", we mean the implementation code which you insert into the POUs by means of the respective programming language editors. The following POU typ

Task Configuration In the task configuration, you define one or more tasks for controlling and executing the application program in the PLC. Each application has to include a Task Configuration object

Programmatic Access to I/Os CODESYS provides the following features for mapping project variables to input, output, and memory addresses: Assignment of project variables to input, output and memory ad

Orientation and Navigation :

Attribute pragmas Attribute pragmas influence compiling and precompiling. They are supported only in text editors. CODESYS supports a series of pre-defined attribute pragmas. In addition you can use u

Configuration Tip See the general description for information about the following tabs of the device editor. Tab: <device name> I/O Mapping Tab: <device name> IEC Objects Tab: <device name> Parameters

Functions CAN RAW CODESYS provides the capability of sending and receiving CAN messages via the application. No devices are required in the device tree to do this. The access can also be executed para

Diagnosis This chapter describes the general diagnosis in the case of CAN problems – regardless of the used fieldbus stack. Most problems are traced back to incorrect wiring or faulty bus device or CA

Network and Addressing Constructing a control network hierarchically, so that extensive self-configuration is possible. In CODESYS , the network topology is mapped to unique addresses and the routing