Functional Specifications

The MVI69E-AFC operates as a powerful flow computer module, augmenting the operation of the CompactLogix® processor by

providing a dedicated and accurate set of flow calculations.

♦ Calculates flow rates, accumulated volumes, accumulated mass, and (for gas product) accumulated energy.

♦ Calculation results are transferred to processor memory and may also be transferred to a SCADA host using Modbus serial or

Modbus TCP/IP.

♦ User-configurable, allowing each of the meter runs to be individually set up to meet the specific requirements of an application.

Archiving

♦ Supports data archiving and event logging.

♦ Data archiving is available for each meter run, as two separately configurable files, one called “hourly” and the other called “daily”,

whose records are intended to implement the Quantity Transaction Records (QTRs) required by applicable measurement

standards. Under default configuration:

(a)  Records are written once each hour to the “hourly” file and once each day to the “daily” file, with additional records written to

both files upon occurrence of an event that could affect measurement results (such as the change in value of a significant

parameter).

(b)  Each record consists of 100 registers formatted with up to 50 data point values selected as being appropriate for the meter’s

configuration (type, product, etc.) and compliant with QTR requirements.

(c)  Each file is formatted for a few of the most recent records to be kept in higher-speed local storage plus 1440 more records in

larger-capacity, slower “extended” storage.

♦ Logging feature provides storage of up to 2.000 events and separately 2000 alarms.