MVI56E-AFC PROSOFT

Model: MVI56E-AFC
Brand: ProSoft Technology
Series: MVI56E (ControlLogix Ethernet enhanced)
Core Function: Multi-run gas/liquid flow computer for custody transfer
Type: Enhanced Liquid & Gas Flow Computer module
Key Specs: 16 meter runs (4 streams each), 800 mA @ 5 Vdc, 0–60 °C

Product Introduction

Question for you: when does a ControlLogix rack need its own dedicated flow computer? Answer: when you’re doing custody transfer or allocation metering for oil/gas operations and need API/AGA-compliant calculations sitting right beside your PLC logic. The ProSoft MVI56E-AFC is that module—it handles up to 16 meter runs with 4 streams each, doing live flow rate/volume/mass/energy calculations while archiving hourly/daily/monthly data for regulatory audit.

Here’s the practical math: it pulls 800 mA at 5 Vdc (3 mA at 24 Vdc) in a 0–60 °C cabinet, supports Modbus TCP configuration over Ethernet plus dual serial ports for field devices, and gives you transmitter calibration logging plus event alarms. You size it by total meter runs first, process inputs second—don’t overload one module when splitting across two gives you redundancy.

Key Selling Points & Differentiators

Handles 16 meter runs (64 streams total) with simultaneous gas/liquid calculations per API 21.1/21.2 and AGA 3/7/8/9/11, so one ControlLogix rack replaces multiple standalone RTUs while staying compliant for custody transfer.
Ethernet Modbus TCP/IP for remote configuration/diagnostics plus dual serial ports (Modbus slave/master or ASCII) lets field meters talk directly to the module while SCADA reads archives over IP—dual-path redundancy without extra boxes.
Onboard archiving (hourly/daily/monthly quantities, transmitter calibrations, events) with export via Modbus or ladder means you get RTU-grade record-keeping integrated into your Logix project, not scattered across vendor-specific historians.
Not recommended as a generic process monitor; if you’re doing basic flow totalization without AGA/API compliance or custody-transfer audit trails, a cheaper analog scaling solution or native EtherNet/IP instruments usually wins on cost and simplicity.
Process input flexibility covers turbine/coriolis/ultrasonic meters (frequency/pulse), differential pressure, densitometers, with configurable cutoffs, meter factors, and shrinkage—matches most field metering without custom ladder math.
Backplane exchange uses included Add-On Instructions for configurable layouts, so you avoid fixed data block headaches; export UDTs as L5X for your project keeps everything native to Studio 5000.