The IEC (International Electrotechnical Commission) 6-1131-3 Standard is a widely recognized international standard for the programming of a PLC.
How many ‘Graphical languages’ are there in the IEC 6-1131-3 ?
a. 2
b. 3
c. 4
d. 5
The correct answer is A.
They are Ladder Diagram (LD) and Function Block Diagram (FBD).
Ladder Diagram
Function Block Diagram
Programming Languages
1. Graphical
1. Ladder Diagram (LD)
2. Function Block Diagram(FBD)
2. Textual
1. Instruction List (IL)
2. Structured Text (ST)
3. Program Control Flow
1. Sequential Function Charts (SFC)
Sequential Function Charts are considered by many to be a graphical language.
IEC 61131-3 is the third part of the IEC 61131 family. This consists of:
•Part 1: General Overview
•Part 2 Hardware
•Part 3 Programming Languages
•Part 4 User Guidelines
•Part 5 Communication
•Part 7 Fuzzy Logic
• Part 8 Application Guidelines
Benefits
