Discover our Clipsal Smart Home packages as seen on The Block 2018

in location

OR

I'm looking for

  • Wholesalers
    • Uncheck All Check All
  • EXPERTISE
    • Expand
    • Expand
    • Expand
    • Uncheck All Check All
  • Switchboard Manufacturers
    • Uncheck All Check All
OR

The best way to see what Clipsal electric products can do for your home is seeing them in action at a Clipsal Display Centre.

Product stock may vary according to location. If you're after a specific product range, please check with your chosen location before visiting.

10 Results
    Load More Load Complete
    Change Location

    Are the PM5000's registers saved as most significant or least significant register?

    Issue
    Are the PM5000's registers saved as most significant or least significant register?

    Product Line
    PM5000 series meters (PM5100, PM5300, PM5500)

    Environment
    Modbus register reading program

    Cause
    When reading Modbus registers for a PM5000-series meter, the Modbus register read program may require that the data type be specified as Most or Least Significant Register for 32-bit or 64-bit registers.
    For 16-bit registers, this may change to Most Significant or Least Significant Bit. The customer may also ask if the registers are big endian or little endian.


    Resolution
    PM5000 meters store data in the Most Significant Register format (Big Endian).
    This means that the largest number gets stored in the smallest address. 


    Example:
    Say that a number (123,456,789) is stored across three addresses (101, 102, 103).
    If this data is stored as big endian (most significant bit/register), the largest number will get stored in the smallest address.

    Big Endian (Most Significant Bit/Register)

    Address

    Value

    101

    789

    102

    456

    103

    789



    If this data as stored as little endian (least significant bit/register), the largest number will get stored in the largest address.

    Little Endian (Least Significant Bit/Register) 

    Address

    Value

    101

    789

    102

    456

    103

    123

    Didn’t find what you were looking for?

    Try Searching Again View Our Categories

    Need further assistance?

    Our Customer Care department provides total customer service solutions for our residential, industrial and commercial applications.

    Get Assistance