MVI56E-MNETC ♦ ControlLogix Platform
Building on Success
Modbus TCP/IP Multi Client Enhanced Communication Module
Setup Guide
ProSoft Technology, Inc.
Page 63 of 72
April 18, 2011
5.1.2 What is the difference between the MVI56E-MNET(R) and the
MVI56E-MNETC(R)?
The MNETC and MNETCR modules support up to 30 Modbus TCP/IP Clients,
while the MNET and MNETR modules support one Client.
If your ControlLogix application needs to poll a large number of Modbus
TCP/IP Server devices, and requires quick responses from these servers,
you can divide the Servers among multiple Clients, and avoid timeouts if an
individual Server does not respond to a Modbus TCP/IP command from a
Client. The single Modbus TCP/IP Client in the MNET and MNETR modules
must open and close connections to each server device they talk to, whereas
the MNETC or MNETCR can have each client connect to its own server
device and keep these connections open, thereby improving performance.
The MNETC and MNETCR modules act as Modbus TCP/IP Clients only.
If your application must respond to commands from another Modbus TCP/IP
Client on the network, use the MNET or MNETR module. The MNET and
MNETR modules can act as both a Modbus TCP/IP Server and as a Modbus
TCP/IP Client
5.1.3 Is the MVI56E product a direct replacement to my existing
MVI56 product?
Yes
5.1.4 How is the MVI56E-MNETC configured?
The module is configured using ProSoft Configuration Builder (PCB) software via
the module’s Ethernet port or through the backplane using CIPconnect
®
. The
product no longer requires Windows HyperTerminal for configuration and does
not come with a serial port.
5.1.5 What is ProSoft Configuration Builder (PCB)?
ProSoft Configuration Builder (PCB) provides a quick and easy way to manage
module diagnostics and troubleshooting operations. Built-in module diagnostics
menus and the serial port data stream analyzer can be accessed using PCB
through the module's high-speed Ethernet configuration port (E1) or though
Rockwell Automation 1756-ENxT or 1756-CNBx communications interfaces
using CIPconnect
®
.
5.1.6 What is the purpose of the MVI56E-MNETC Ethernet (E1) Port?
The Ethernet port (E1) is the application port as well as the configuration port and
allows a remote PC to upload and download configuration files and monitor the
module operation through ProSoft Configuration Builder (PCB).
