Function Block Diagram (FBD) is a programming language used to create programs for Programmable Logic Controllers (PLCs). FBD programs are created using symbols that represent the inputs and outputs of a PLC. These symbols include input/output module symbols to represent data input and output, and operation symbols such as mathematical and logical operators to represent calculations.

FBD programs are connected to each other through connections drawn between the symbols representing the inputs and outputs of a PLC. This allows a change in an input to trigger a calculation of an output value, which is then written to the PLC output module.

FBD is a widely-used programming language for controlling automation systems and is supported by many PLC manufacturers.

What are the advantages of (FBD) Function Block Diagram?

Function Block Diagram (FBD) has several advantages. Some of the most important advantages of this language are:

    Understandable and readable structure: Using FBD helps to understand how a PLC program works. This is because the language visually shows how a program works through its symbols and connections. As a result, the operating principle of a PLC program can be more easily understood.

    Fast programming: Using FBD allows for fast creation of a PLC program. This is because the language visually shows how a program works through its symbols and connections. As a result, the structure of a PLC program can be created and tested faster.

    Low error rate: Using FBD reduces the error rate when creating a PLC program. This is because the language visually shows how a program works through its symbols and connections. As a result, the structure of a PLC program can be created and tested faster, which reduces the error rate.

    Low training requirement: Using FBD allows for the creation of a PLC program without the need for PLC programming training. This is because the language visually shows how a program works through its symbols and connections. As a result, the structure of a PLC program can be created and tested faster, which reduces the training requirement.