PART 8: SCL & STL (PDF)

In this book (PART 8) we will get familiar with additional programming languages that can be useful while programming a Siemens S7-1500 and S7-1200 PLCs in TIA Portal. We will get information on the SCL and STL and how to read and write programs in these languages.

Table of Content:

• LESSON 1: PROGRAMMING IN SCL
  
• EXAMPLE 1: SCL syntax and basic instructions
  
• TASK 1: Creating a new SCL function
• TASK 2: The REGION instruction
• TASK 3: The SCL syntax
• TASK 4: The AND, OR and NOT instructions
• TASK 5: The IF…ELSE instruction
• TASK 6: The CASE instruction
• TASK 7: The FOR instruction
• TASK 8: The WHILE instruction
• EXAMPLE 2: Edge detection, counters and timers
  
• TASK 1: The R_TRIG and F_TRIG instructions
• TASK 2: The CTU (counter “up”) instruction
• TASK 3: The TON (timer “on delay”) instruction
• EXAMPLE 3: String instructions
  
• TASK 1: Preparing strings in a data block
• TASK 2: Working with strings
• TASK 3: The CONCAT instruction
• TASK 4: The LEFT, RIGHT and MID instructions
• TASK 5: The LEN instruction
• TASK 6: The FIND instruction
• TASK 7: The REPLACE instruction
• TASK 8: The INSERT instruction
• EXAMPLE 4: The PID regulator (compact)
  
• TASK 1: Opening an organisation block
• TASK 2: Calling the PID regulator
• TASK 3: The PID regulator Properties and Configuration
• EXAMPLE 5: The PUT and GET instructions
  
• TASK 1: The PUT instruction
• TASK 2: The GET instruction
• EXAMPLE 6: Basic SCL examples
  
• TASK 1: Create our R_TRIG / F_TRIG functionality
• TASK 2: Creating the TOGGLE functionality
• TASK 3: Creating an asymmetrical blinker signal
• TASK 4: Creating a FIFO buffer
• EXAMPLE 7: An advanced SCL example
  
• TASK 1: Read inputs
• TASK 2: Machine start/stop
• TASK 3: Creating the logic for the conveyor (a re-usable function)
• TASK 4: Creating the logic for the scales
• TASK 5: Creating the logic for the sorter
• TASK 6: Creating the logic for the alarm
• TASK 7: Creating the logic for the counter
• TASK 8: Create the logic for the signals
• TASK 9: Writing outputs
• TASK 10: Calling functions in Main [OB1]
• TASK 11: Calling a re-usable function in FOR loop
• EXAMPLE 8: Data type conversions, RETURN and ENO
  
• TASK 1: Data type conversions
• TASK 2: Working with RETURN
• TASK 3: Working with ENO
• EXAMPLE 9: Working with arrays
  
• TASK 1: Arrays – fixed dimensions, fixed data type
• TASK 2: Arrays – variable dimensions, fixed data type
• TASK 3: Arrays – variable dimensions, variable data types
• EXAMPLE 10: PEEK, POKE and AT instructions
  
• TASK 1: Preparing a data block
• TASK 2: The PEEK instruction (read data)
• TASK 3: The POKE instruction (write data)
• TASK 4: The PEEK and POKE instructions within a FOR Loop
• TASK 5: The AT construct
• LESSON 2: PROGRAMMING IN STL
  
• EXAMPLE 11: STL syntax and basic instructions
  
• TASK 1: Creating a new STL function
• TASK 2: Setting our mnemonics
• TASK 3: The STL syntax – the AND, OR, FP, FN, SET and RESET instructions
• TASK 4: Function calls in STL
• EXAMPLE 12: Edge detection, counters and timers
  
• TASK 1: Edge detection, counters and timers
• EXAMPLE 13: Working with jump instructions
  
• EXAMPLE 14: Math in STL
  
• EXAMPLE 15: Creating loops
  
• EXAMPLE 16: A basic STL example
  
• EXAMPLE 17: Re-usable functions
  
• EXAMPLE 18: Step-oriented programming
  
• EXAMPLE 19: SET and CLR instructions
  
• EXAMPLE 20: Legacy timers