A String Is A Sequence Of Characters That Represents Text Data. In PLC Programming, Strings Are Used To Store And Manipulate Textual Data Such As Messages, Key, Alarm Messages, Security Key Etc. For Storing String, We Use String Data Type. The Data Type STRING Consists Of A Series Of Up To 32767 ASCII Characters.

In Studio Three Type Of Timer Available In Structured Text Timer On Delay With Reset (TONR), Timer Off Delay With Reset (TOFR) And Retentive Timer On With Reset (RTOR). These Timer Unit Is 1msec. In Structured Text These Three Timer Available As Statements With Have Some Input And Output Parameter Such As Preset Value, Accumulator Value, Timer Reset Etc.

In Structured Text You Can Use Timer As Function. Working Of Timer Is Same As Ladder Logic But In Structured Text Parameter Of Timer Is Defined As Function. So In Timer Function Have Some Parameter Like IN (Input) Input Start The Timer Operation, PT (Preset Time) Value For Timer Operation, Q (Output) And ET (Elapsed Time) Current Value Of Timer.

Elementary Data Types Is A Basic Data Types In Panasonic PLC. These Data Types Used To Represent Simple Values Such As Numbers, String, And Boolean Values. They Are The Basic Building Blocks Of More Complex Data Structures And Are Used To Define Variables And Constants In A Program.

In Structured Text Language Ideal For Mathematical Processing That Is Difficult To Write In Ladder Programming. Structured Text (ST) Allows You To Write Complex Programs And Control Structures Using An Optimized Programming Language. It Is Available For All PLCs.

The Structured Text Language Is A High-Level Text-Based Programming Language That Uses Series Of Statements To Define Complex And Sophisticated Control Algorithms For Industrial Systems. Structured Text Language Defined By The IEC 61131-3 Standard. The Structured Text Language Ideal For Mathematical Processing That Is Difficult To Write In Ladder Programming. The Structured Text Language Supported By CX-Programmer Ver. 7.2 Or Higher Conforms With The IEC 61131-3 Standard

Counter Counts Input Bit Of Counter And Increment Or Decrement By 1 When Input Bit Of Counter Change. A Counter Use For Counting Of Event, Pulses And Sequences. A Counter Input Is Always Is Bit (ON Or OFF), Pulses Or Events. Increment Counter Which Increment Its Preset Value When Input Bit Is Change From True To False, Decrement Counter Decrement Preset Value When Input Is Change From True To False. In Fuji PLC Have Two Type Of Counter , Counter UP And Counter Down.

Omron The Clock Pulses Are Flags That Are Turned ON And OFF Periodically. A Clock Pulse Is A Periodic Signal That Is Used To Synchronize Or Time The Operation. In Omron Each Clock Pulse Have Fixed Frequency And Time To Generate Clock Pulse. These Clock Pulses Are Read-Only You Cannot Change Or Overwritten From Instructions Or The CX-Programmer.

In Programming For_Do Loop Is A Conditional Statement Used To Repeatedly Execute A Block Of Code For A Specific Number Of Times Or Until A Certain Condition Is Met. It Is Used In Array, UDT Etc.

Condition Flags Are A Set Of Bit Status (ON Or OFF) Indicators Used In Omron PLC To Represent The Results Of Arithmetic, Comparison And Logical Operations. These Flags Are Usually Stored In The Auxiliary Memory Area Of Plc. Flags Register Or Status Register, And They Allow The PLC To Make Decisions Based On The Outcome Of Previous Operations. These Condition Flags Include The Error Flag, Carry Flag, And Other Flags That Indicate The Results Of Instruction Execution.