Addressing:


File-Based Addressing: 

Address Format: {File}:{Word}/{Bit}

The PLC Address field requires a specific format to correctly locate the tag within the PLC's memory. Here's the breakdown:

  • File: This refers to the data file in the PLC where the tag is stored. Common file types include:
    • B: Binary (for individual bits)
    • N: Integer
    • L: Long
    • F: Floating-point
  • Word: The word number within the specified file.
  • Bit: (Optional) If you are addressing a specific bit within a word, include the bit number after a slash (/).

Example:

  • B3:10/7 refers to:
    • File: B3 (Binary file 3)
    • Word: 10 (the 11th word in the file)
    • Bit: 7 (the 8th bit within word 10)


Tag-Name-Based Addressing:

Address Format: Full Tag name in the PLC.



Important Notes:

Selected data type must match the file type for successful read/write operations.        

  • Bool: reads bits from N File.
  • Int (No. of words = 1): reads words from N files
  • Int (No. of words = 2): reads int32 from N files or L files.
  • Real: reads Floats from F files.