The MVI56-LTQ is a module from ProSoft Technology specifically designed to communicate with Limitorque valve actuators. It allows Controllogix-compatible processors to easily interface with Limitorque valve actuators and other Limitorque protocol-compatible devices. This module acts as an input/output module between the Limitorque valve network and the ControlLogix processor, supporting data storage and transmission for up to 150 valves.

Key features of the MVI56-LTQ include:
Controller tags with ControlLogix processor support transfer data from up to 150 valves.
Simulate the Limitorque Port A/B polling scheme using two ports on the module.
Supports a wide range of valves, including MX/DDC Modbus, UEC-3-DDC Modbus, DC-100M I/O modules, DC-100M field units, and Valvcon IVO (cell multi-point mode only).
Software-configurable communication parameters, including baud rate, message response timeout, number of active slaves, final state of valve data when communication fails, network polling scheme, active slave table (bitmap mapping), and use of CTS module line options.
Supported commands include continuous polling, reading registers 40008 to 40013, optional 40055 or 40006/40007, opening, stopping, closing, starting network ESD, terminating network ESD, engaging contactors 1 to 6, disconnecting contactors 1 to 6, and positioning valves (0 to 100%).

Technical specifications include:
Backplane current load: 800 mA @ 5 Vdc, 3 mA @ 24 Vdc.
Operating temperature: 0°C to 60°C (32°F to 140°F).
Storage temperature: -40°C to 85°C (-40°F to 185°F).
Impact: Operating 30 g, non-operating 50 g.
Vibration: 5 g from 10 Hz to 150 Hz.
Relative humidity: 5% to 95% (no condensation).
The MVI56-LTQ module is equipped with 4 LED status indicators to display module status, backplane transmission status, application status, and serial activity. It also has debug/configuration ports (CFG) and application ports (PRT1 & PRT2), supports full hardware handshake control, and offers wireless, modem, and multipoint support.