Rockwell Automation 1758-RTU202 DataSite Software User Manual FRN 1.2 User Manual
Page 330

Publication 1758-UM002D-EN-P - October 2010
330 Enron Modbus Protocol for the 1758-FLO DataSite Controller
The following tables list all the floating point variables used by Enron Modbus
in the DataSite controller.
Meter Run 0 Data Variables
Current value
Register
Description
Access
7001
Current temperature
RO
7002
Current static pressure
RO
7003
Current differential pressure (AGA-3)
RO
Instantaneous flow variables
Register
Description
Access
7004
Flow volume rate
RO
7005
Flow mass rate
RO
7006
Average EXT for the hour (AGA-3 1990 only)
(EXT is the square root of the product of static pressure
and differential pressure.)
RO
7007
Average uncorrected flow volume for the hour (AGA-7
only)
RO
Force variables
Register
Description
Access
7008
Forced temperature
RO
7009
Forced static pressure
RO
7010
Forced differential pressure (AGA-3 only)
RO
Compressibility variables
Register
Description
Access
5001
Total accumulated run time. Unit is seconds.
RO
5002
Total flow time of the previous day. Unit is seconds.
RO
5003
Total flow time of the current day. Unit is seconds.
RO
5004
Total flow time of the previous hour. Unit is seconds.
RO
5005
Total flow time of the current hour. Unit is seconds.
RO
5006
Total accumulated mass flow quantity.
RO