Hach LANGE Manual Del Usuario página 17

Read data
For usual data sequence, use L PED at the module starting address to
read a floating point object. There is no need for more conversions.
Note: PEW/PED is the SIMATIC or German code mnemonic. Use PIW/PID for IEC
or English.
1. Read ERROR or STATUS words.
2. Use the L PEW instruction.
English 17