ProSoft Technology MVI56-AFC - Manual (Page 38)

Meter Channel Functionality MVI56-AFC ♦ ControlLogix Platform
User Manual Liquid and Gas Flow Computer
Page 38 of 316 ProSoft Technology, Inc.
February 25, 2011
3.6.5 Data Archiving
The module supports the archiving of data for each meter channel. Each time,
one record consisting of all the associated data is date and time stamped and
archived. This option allows for archiving each hour for 2 days (48 records per
meter run) and every day for 35 days (35 daily records per meter run) for each
meter channel. Each record consists of up to 40 process and other variables.
Archives are mapped to the local Modbus Table. Refer to Archives (page 91) for
more information about this topic.
3.6.6 Event Log Function
The module can log up to 1999 critical events in an Event Log File stored as a
set of easily accessible Modbus registers in non-volatile RAM. Changing critical
parameters, such as orifice plate size, Meter Base K factors, and Meter
Correction Factors, are time stamped and logged. Refer to Events for more
information about this topic.
3.6.7 Measurement Units
This option is provided for each meter channel to be configured with SI or US
units of measurement. Units for flow totalization (volumetric and mass) and flow
rate monitoring are configurable for each meter channel separately if the default
configuration is not applicable. Each meter channel may be configured to use
any of the standard units from liters/gallons to thousand cubic meters/barrels.
The flow rate period of each meter channel may be selected from flow rate per
second, per minute, per hour, or per day.