basic term used in PLC
- AC: Alternating Current
- Accumulator: A data register used in data memory that used to store a data temporary..
- ADC: Analog to Digital Conversion
Analog to digital converter. A circuit or device that inputs an analog signal and converts it to a digital value. The resolution refers to number of bits used to indicate the analog value.
- Address: A location input or output point in to the memory..
- Algorithm: A software procedure used to solve a particular problem..
- ASCII: American Standard Code for Information Interchange. A code used to represent common numbers, letters, special symbols and control codes.
- Assembly Language: Mnemonic commands (typically only three characters) that are one level above the machine code directly used by the processor. PLC programming software often has a mnemonic view that correlates with the ladder diagram.
- Back Plane:The printed circuit board at the back of the PLC rack where the modules connect to a power supply and data bus.
- BCD:binary coded decimal
A PLC coding system in which a word of 16 bits is divided up into four nibbles (4 bits) and each region used for the decimal range of 0 to 9. Thus a word will go from 0 to 9999 and can be easily deciphered. This technique is also used for devices like thumbwheel switches.
- Bit: This is the smallest piece of information in the PLC.A bit can be either a 1 or 0.Typically eight bits make a byte and 16 bits make a word.
- Boolean:A system based on logical states such as AND, OR, NAND, NOR, NOT and XOR. The symbols can be used singly or in combination to form circuits that perform true or false operations.
- Compile:The process of translating a program into machine code for the computer to execute.
- Complement:A logical operation that inverts a signal or bit(s). The complement of 0 is 1 and the complement of 1 is 0.
there are lots of technical term associate with PLC programming.... u can read from below link...
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