Software User Manual FRN 1.2 Owner manual

Publication 1758-UM002D-EN-P - October 2010

Enron Modbus Protocol for the 1758-FLO DataSite Controller 331

Accumulated flow variables

7017 Flow volume at base conditions during the contract day RO

7018 Flow mass at base conditions during the contract day RO

7019 Reserved —

7020 Reserved —

7021 Mass quantity of the previous day RO

7022 Volume quantity of the previous day in base conditions RO

7023 Volume quantity of the previous day in flowing conditions RO

7024…7028 Reserved —

7029 Average differential pressure for the hour RO

7030 Average static pressure for the hour RO

7031 Average temperature for the hour RO

7032 Average differential pressure for the day RO

7033 Average static pressure for the day RO

7034 Average temperature for the day RO

Other variables

7035 K factor. Range: 0.001…1000000 R/W

7036 Relative density. Range: 0.0…10.0 R/W

7037…7039 Reserved —

7040 Expansion factor based on the absolute static pressure

measured at upstream tap

7041 Expansion factor based on the absolute static pressure

measured at downstream tap

7042 Coefficient of discharge RO

Temperature input variables

7043 Temperature b factor R/W

7044 Temperature k factor R/W