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FAQs
Q1: What is the primary function of the MVI56E-MNETR?
It is a Modbus TCP/IP communication module that allows Rockwell Automation ControlLogix processors to interface with Modbus TCP/IP-compatible devices. It acts as an I/O module on the ControlLogix backplane, making Modbus data appear as standard I/O data to the processor. Its distinguishing feature is the Reduced Data Block, which uses less backplane bandwidth, making it ideal for remote rack applications.
Q2: What is the difference between MVI56E-MNETR and MVI56E-MNET?
The primary difference is the data block size. The MVI56E-MNETR uses a Reduced I/O data image block specifically designed for remote rack applications over ControlNet or EtherNet/IP. This reduces backplane bandwidth consumption, making it easier to schedule in RSNetWorx and reducing performance impact on other I/O in the remote chassis. The standard MVI56E-MNET uses a larger data block and is better suited for local chassis installations.
Q3: Does the MVI56E-MNETR support both Client and Server modes?
Yes. The MVI56E-MNETR includes both Client (Master) and Server (Slave) capabilities. The module's Modbus data types overlap in its memory database, allowing the same data to be conveniently read or written as bit-level or register-level data. It supports Enron or Daniel floating-point formats for configurable floating-point data movement.
Q4: Is the MVI56E-MNETR backward compatible with older MVI56-MNETR modules?
Yes. The MVI56E-MNETR is backward compatible with earlier MVI56-MNETR modules. You can upgrade without changing existing ladder logic programs or module configurations. Configuration transfer is done by moving the Compact Flash (CF) card from the old module to the new one, ensuring a streamlined update process.
Q5: What software is required to configure and program the MVI56E-MNETR?
The module is configured using ProSoft Configuration Builder (PCB), a Windows-based graphical tool for online or offline configuration and diagnostics via the module's Ethernet port. For RSLogix 5000 integration, Add-On Instructions (AOI) are provided for data transfer between the module and processor. The module also supports CIPconnect technology, enabling remote configuration and diagnostics through ControlLogix backplanes and EtherNet/IP/ControlNet networks without requiring RSLinx.
