Products Description
ProSoft MVI56-LTQ Communication Module in stock
ProSoft MVI56-LTQ is an inRAx communication module built for Rockwell ControlLogix backplane, acting as a master interface for Limitorque electric valve actuators. It bridges the ControlLogix PLC and Limitorque valve network, enabling bidirectional valve control and status data exchange.


This dual serial port module supports up to 150 valve units, with dedicated commands for open, close, stop and ESD emergency shutdown. It is widely used in oil & gas, pipeline and chemical plant valve control systems, and is a common spare for legacy ControlLogix valve automation cabinets.

Data Parameters
1. Brand: ProSoft Technology
2. Model: MVI56-LTQ
3. Product Type: Limitorque Valve Master Communication Module
4. Application: ControlLogix valve actuator monitoring & control
5. Feature: Dual serial ports, max 150 valves, ESD command support, A/B polling
6. Characteristic: ControlLogix rack slot, backplane data exchange, tag-based configuration
7. Baud Rate: 1200 ~ 115200 bps
8. Compatible Devices: Limitorque MX, DDC, UEC-3, Valvcon IVO actuators
9. Mounting: Standard ControlLogix rack slot installation
10. Operating Temperature: -20℃ ~ +70℃
Core Functions
1. Serve as master to poll Limitorque valve actuators and collect valve position, fault and status data.
2. Execute valve commands: open, close, stop, position adjustment and emergency ESD trip.
3. Transfer valve data to ControlLogix controller tags via backplane for ladder logic processing.
4. Support dual-port A/B polling mode to improve communication stability for multi-drop valve networks.
5. Provide module diagnostic, communication timeout and valve fault alarm information.
Application Scenarios
1. Oil & gas pipeline valve control and emergency shutdown system.
2. Chemical plant, refinery and terminal valve automation cabinet.
3. Rockwell ControlLogix system integrated with Limitorque electric actuators.
4. Power plant auxiliary water and steam valve monitoring network.
5. Legacy valve control system overhaul and spare replacement.
FAQ
1. Q: What is ProSoft MVI56-LTQ?
A: It is a ControlLogix communication module for Limitorque valve actuators, used to realize valve remote control and status feedback.2. Q: Can it work with Modbus actuators directly?
A: It is designed for Limitorque proprietary protocol; standard Modbus needs MVI56-MCM instead.3. Q: How many valves can one module support?
A: Maximum 150 valve units with dual-port A/B polling scheme.
Similar products
• MVI56-MCM
• MVI56-MBP
• PLX31-EIP-SIE
• GE MMII-PD-1-2-240
• Mitsubishi MR-S11-200-Z37