5 programming language which GCAN-PLC support
The third part of IEC(IEC1131-3) is the PLC programming language standard. IEC1131-3 specifies the expressions of syntax, grammar and five PLC programming languages.
The five programming languages of PLC are:
Sequential Function Chart (SFC)
A PLC programming language on top of other programming languages for programming sequential control programs. Sequential function diagrams provide a graphical method of organizing programs that can be nested in other languages in sequential function diagrams. Steps, transitions, and actions are the three main components in a sequential function diagram. The sequential function diagram is used to describe the function of the digital control system, according to which the sequence control ladder program can be easily drawn.
Ladder diagram (LD)
Ladder diagrams are the most used PLC programming languages by graphics. The ladder diagram is similar to the circuit diagram of the relay control system. It is easy to understand and easy to understand. It is easy to be mastered by the electrical personnel familiar with the relay control in the factory. It is especially suitable for switching logic control.
The programming software can be used to generate and edit ladder diagrams directly and download them to the PLC.
Function block diagram (FBD)
It's a PLC programming language similar to digital logic gates, which is easy to grasp by people with a digital circuit foundation. The programming language uses a box similar to the gate, OR gate to represent the logical operation relationship. The left side of the box is the input variable of the logic operation, the right side is the output variable, and the small circle on the input and output ends indicates the "non" operation. The boxes are connected by "wires" and the signals flow from left to right.
Instruction list (IL)
The PLC instruction is a mnemonic expression similar to the instruction in the assembly language of the microcomputer. The program consisting of instructions is called an Instruction List program. The instruction list program is difficult to read, and the logical relationship is difficult to see at a glance, so the PLC programming language generally uses the ladder language. If you are using a handheld programmer, you must convert the ladder diagram to a command list before writing to the PLC. In the user program memory, the instructions are arranged in the order of the step numbers.
Structure text (ST)
Structured Text (ST) is a specialized advanced PLC programming language created for the IEC61131–3 standard. Compared with ladder diagrams, it can perform complex mathematical operations, and the program written is very simple and compact.
In addition to providing several programming languages for the user to choose from, the standard also allows programmers to use multiple programming languages in the same program, allowing programmers to choose different languages to suit a particular job.
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Email/skype: sygckj@gmail.com
Tel/whatsapp: +8613609896275
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The five programming languages of PLC are:
Sequential Function Chart (SFC)
A PLC programming language on top of other programming languages for programming sequential control programs. Sequential function diagrams provide a graphical method of organizing programs that can be nested in other languages in sequential function diagrams. Steps, transitions, and actions are the three main components in a sequential function diagram. The sequential function diagram is used to describe the function of the digital control system, according to which the sequence control ladder program can be easily drawn.
Ladder diagram (LD)
Ladder diagrams are the most used PLC programming languages by graphics. The ladder diagram is similar to the circuit diagram of the relay control system. It is easy to understand and easy to understand. It is easy to be mastered by the electrical personnel familiar with the relay control in the factory. It is especially suitable for switching logic control.
The programming software can be used to generate and edit ladder diagrams directly and download them to the PLC.
Function block diagram (FBD)
It's a PLC programming language similar to digital logic gates, which is easy to grasp by people with a digital circuit foundation. The programming language uses a box similar to the gate, OR gate to represent the logical operation relationship. The left side of the box is the input variable of the logic operation, the right side is the output variable, and the small circle on the input and output ends indicates the "non" operation. The boxes are connected by "wires" and the signals flow from left to right.
Instruction list (IL)
The PLC instruction is a mnemonic expression similar to the instruction in the assembly language of the microcomputer. The program consisting of instructions is called an Instruction List program. The instruction list program is difficult to read, and the logical relationship is difficult to see at a glance, so the PLC programming language generally uses the ladder language. If you are using a handheld programmer, you must convert the ladder diagram to a command list before writing to the PLC. In the user program memory, the instructions are arranged in the order of the step numbers.
Structure text (ST)
Structured Text (ST) is a specialized advanced PLC programming language created for the IEC61131–3 standard. Compared with ladder diagrams, it can perform complex mathematical operations, and the program written is very simple and compact.
In addition to providing several programming languages for the user to choose from, the standard also allows programmers to use multiple programming languages in the same program, allowing programmers to choose different languages to suit a particular job.
If you need more details about GCAN products, click here: http://www1.gcanbox.com/
Email/skype: sygckj@gmail.com
Tel/whatsapp: +8613609896275
Facebook: https://www.facebook.com/gcanbox/
Buy it now: Click to buy on Alibaba
