All the variables in the Dictionary are animated with real-time values 1 To better track variables in Running mode, the KAS IDE dynamically computes their value along with the application execution and display the result in this column.
Note that this column is only displayed when your application is running
For more details, see "Variable Monitoring"
The variable attributes (Read Only, External, IN, OUT) as defined:
- Read Only: a variable set as Read Only is a constant (it cannot be modified in your PLC"Programmable Logic Controller" A Programmable Logic Controller, PLC, or Programmable Controller is a digital computer used for automation of industrial processes, such as control of machinery on factory assembly lines. Used to synchronize the flow of inputs from (physical) sensors and events with the flow of outputs to actuators and events code, but it can be forced manually). Read Only variables can be mapped to Outputs but not to Inputs. This is because Inputs can change state and a Read Only variable would not be able to change its value to match the input state.
- External: this attribute is not used
- IN or OUT: Input or Output parameters of User Defined FunctionA function calculates a result according to the current value of its inputs. A function has no internal data and is not linked to declared instances. Blocks
The variable tag is a short comment, that can be displayed together with the variable name in graphical editors.
See example here
Edit the variable parameters
Add the variable to your FBD"Function block diagram" A function block diagram describes a function between input variables and output variables. A function is described as a set of elementary blocks program
Resize the rectangle to make the Tag and Description visible
