ProSoft Technology MVI56-AFC - Manual (Page 104)

Archives MVI56-AFC ♦ ControlLogix Platform
User Manual Liquid and Gas Flow Computer
Page 104 of 316 ProSoft Technology, Inc.
February 25, 2011
The Selected Archive is continuously maintained to be a copy of the archive
record having the age given in the corresponding "Archive Select" holding
register, as listed in the following table. This means that the Selected Archive
changes whenever either (a) the age in the Open Archive Select register is
changed or (b) when the posting of a new archive causes the ages of all archives
to be increased by 1.
Meter Open Daily Archive
Select Address Open Hourly Archive
Select Address
1 8300 8301
2 10300 10301
3 12300 12301
4 14300 14301
5 16300 16301
6 18300 18301
7 20300 20301
8 22300 22301
9 24300 24301
10 26300 26301
11 28300 28301
12 30300 30301
13 32300 32301
14 34300 34301
15 36300 36301
16 38300 38301
Note: Meters 9 through 16 are only available for the PTQ-AFC and MVI56-AFC modules.
Use the following procedure to retrieve extended archives:
1 Copy the archive age to the correct Open Archive Select register.
2 Read the archive data from the 60000-range input addresses.
Example
To read Meter 2 Hourly Archive Number 277:
1 Write a value of 277 to Modbus Holding Register 10301.
2 Read the archive record data starting at input register 60150.
Note: This procedure can also be used to retrieve regular archives.