code: def set_row(x, row):
      
      row_size = 126
      set_db_row(1, 4 + x * row_size, row_size, row._bytearray)
docs: We use db 1, use offset 4, we replace row x. To find the correct
      start_index we mulitpy by row_size by x and we put the
      byte array representation of row in the PLC