Logic For FIND HIGHET VALUE IN DATA Siemens S7-300

S7 SIMATIC MANAGER TRAINING CHAPTER -08

Siemens S7-300  Logic For FIND HIGHET VALUE IN DATA .

 These chapters explain detail logic and all logical step for find Highest value in given Data .also helps to you for array pointer logic in simatic manager.

Step 1: Create Global Data Block write no of data in DB and save it.

Data you can save in dec, bin, int, real format. We have write data hare15 dec  for our program.

Inseart Data Block.

Create Data Value In Data Block.

Inseart Fuction.

Step 2:  Create Function and write code in STL as given below.

      A     M     40.2                  /// START Search  CMD

      JCN   END

      L     0

      T     MW    50                    // STARTINNG LOCATION OF DATA

      T     MW    56

REOP: NOP   0

      L     MW    50

      SLW   3

      LAR1  

      OPN   "DATA"

      L     DBB [AR1,P#0.0]             // DATA 1ST LOCATIO

      L     MB    56

      >I    

      JC    STR                         //// DATA GREATER THEN CHENG

INC:  L     MW    50

      L     1                           // INCREASE LOACTION 

      +I    

      T     MW    50

      L     MW    50

      L     21                          // IF DATA LOCATION IS EXCCED

      <I                                // CHECK FOR NEXT LOCATION

      JC    REOP

      JU    END

STR:  NOP   0

      L     MW    50

      SLW   3

      LAR1  

      OPN   "DATA"

      L     DBB [AR1,P#0.0]

      T     MB    56

      JU    INC

END:  NOP   0

Step 3: Start serch cammand by make hi bit M40.2

You can gate Highest value of given data in mw56

Step 4: Use code as you required.