ProSoft MVI46-DFNT EtherNet/IP Communication Module

Configured for high-speed Ethernet communication in SLC 500 rack architectures, the ProSoft MVI46-DFNT (MVI46-DFNT EtherNet/IP Client/Server Interface Module) provides direct physical/electrical execution. Placed directly into an SLC backplane slot, the module executes bidirectional DF1-over-Ethernet protocols to bridge legacy rack logic with contemporary network devices without external gateways.

Suffix Breakdown & Model Matrix

The MVI46 series platform utilizes dedicated hardware suffix designations to identify the embedded firmware protocol layer executed by the onboard processor architecture.

Hardware Specifications

Protocol Conversion Latencies & Isolation Limits

The module architecture incorporates internal galvanic isolation on the 10/100 Mbps Ethernet port to prevent ground loop currents from propagating into the SLC 500 backplane bus. Protocol conversion latencies are tied directly to the ladder logic block transfer rate established between the SLC CPU memory map and the MVI46-DFNT internal database. Internal data buffers process dual Client/Server execution threads concurrently, holding explicit messaging latency to deterministic windows defined by the backplane scan intervals of the host rack.

Frequently Asked Questions

Q: What is the maximum current draw of the MVI46-DFNT module from the SLC backplane?

A: The module draws a maximum of 800 mA at 5 VDC directly from the SLC 500 backplane power supply rail.

Q: Does the module require an external power supply for Ethernet signal conditioning?

A: No, all operating power is sourced directly via the 5 VDC chassis backplane connection.

Q: How many concurrent Ethernet socket connections can the MVI46-DFNT maintain?

A: The hardware supports up to 20 active Client connections and up to 15 active Server connections simultaneously.

Field Installation Guidelines

• Verify that host power to the SLC 500 rack is completely disconnected before inserting or removing the module; hot-swapping in non-rated chassis configurations can damage backplane bus pins.
• Use Category 5e or better shielded twisted-pair (STP) Ethernet cabling to ensure noise immunity in industrial noise environments.
• Terminate shield drain wires to a low-impedance earth ground point at the enclosure entry panel.
• Ensure a minimum engagement depth of standard RJ45 locking tabs to maintain signal continuity under mechanical vibration.
• Maintain a minimum 50 mm clearance above and below the card cage to enable unimpeded thermal convection across the module assembly.