Description
ProSoft MVI56E-MNETCR | Reduced Data Block Network Gateway, In Stock
Architect’s Product Breakdown
The ProSoft Technology MVI56E-MNETCR model operates as an advanced communication gateway engineered to integrate Modbus TCP/IP field devices into Allen-Bradley ControlLogix backplane environments while optimizing data transfer block sizes. Within distributed industrial control layouts, this specific hardware model is purpose-built for remote rack installations or network segments where backplane bandwidth is restricted, offloading heavy TCP/IP socket management and polling routines from the primary programmable automation controller.
Integrating this network module into an existing control cabinet requires careful attention to backplane power consumption, slot allocation, and Ethernet switch configuration. Because industrial networks demand high reliability, system architects must ensure proper network segmentation, VLAN structuring, and industrial-grade cabling to prevent broadcast storms or packet collisions. Furthermore, the onboard configuration Ethernet port streamlines diagnostics and web-based parameter monitoring without requiring specialized legacy software cables.
MVI56E-MNETCR
Key Technical Specifications
| Parameter | Specification |
| Manufacturer | ProSoft Technology |
| Model Designation | MVI56E-MNETCR |
| System Compatibility | Rockwell Automation ControlLogix Chassis (1756 Backplane) |
| Backplane Current Load | 800 mA at 5 V DC; 3 mA at 24 V DC |
| Communication Ports | 2 x RJ45 Ethernet ports (10/100 Mbps, auto-crossover) |
| Protocols Supported | Modbus TCP/IP Client and Server with reduced data block handling |
| Data Memory | Up to 5,000 user-definable 16-bit registers |
| Ambient Operating Temperature | 0°C to 60°C |
| Enclosure Rating | IP20 Open-style industrial module |
Field Engineer’s Pitfall Guide
- WARNING: Backplane Slot Power Limitations. Never insert this module into a heavily populated chassis without verifying available 5V DC backplane capacity. Overloading the rack power supply will cause intermittent module reboots and fault out the main controller.
- WARNING: IP Address Conflict and Subnet Mismatch. Ensure that static IP addresses assigned to the MVI56E-MNETCR model do not overlap with other network nodes on the plant floor. Duplicate IPs will cause network storms and sever communication links.
- WARNING: Remote Chassis Bandwidth Misconfiguration. Verify that the controller program utilizes the correct reduced data block structure designed for this model; attempting to poll standard large data blocks across a remote rack without proper configuration will cause communication timeouts.
QA & Testing SOP
- Visual & Origin Verification: Inspect the molded circuit board housing for physical defects, verify OEM serial tracking labels, and check backplane connection pins for oxidation or bending.
- Chassis Seating Test: Mount the MVI56E-MNETCR model into an isolated ControlLogix test rack and power up the backplane to verify normal LED status initialization and processor handshake.
- Network Ping & Web Server Verification: Connect an engineering laptop to the Ethernet port, ping the module IP address, and access the built-in web diagnostic page to confirm firmware and packet statistics.
- Packaging: Seal in heavy-duty anti-static shielding material and pack with dense anti-static foam inside a rigid outer carton.
Technical FAQ
What is the primary difference between the standard MVI56E-MNET and the MVI56E-MNETCR model?
The CR designation indicates a reduced data block architecture specifically engineered to optimize bandwidth performance when installed in remote ControlLogix chassis racks.
Can this module act as both a Modbus TCP/IP Client and Server simultaneously?
Yes. The communication model supports multi-client and multi-server configurations, allowing it to initiate requests to field devices while responding to polling masters.
Does this module require ladder logic programming for integration?
Yes, ladder logic or Add-On Instructions (AOIs) are required within the ControlLogix processor program to manage data exchange between the module’s internal database registers and controller tags.
Can this unit be hot-swapped in an active industrial control rack?
Hot-swapping is generally not recommended unless explicit plant live-maintenance policies, chassis power supplies, and processor fault-handling routines support unseating active backplane modules.
