Modbus TCP/IP
Communication Module for
The inRAx Modbus TCP/IP Communication Module is designed to allow
CompactLogix® /MicroLogix® processors to interface with other Modbus
TCP/IP protocol-compatible devices, including not only Modicon®
processors, but also a wide variety of other Client and server devices.
The MVI69-MNET module is a single-slot solution that provides a
powerful connection between Rockwell Automation® CompactLogix
processors and Modbus TCP/IP network applications. The Modbus
TCP/IP network applications include those networks hosted by Modicon
Quantum processors, networks controlled by operator interface software
applications, and the growing number of manufactured devices that
support this protocol.
The module acts as an input/output module between the Modbus TCP/IP
network and the CompactLogix backplane. The data transfer from the
processor is asynchronous from the actions on the Modbus TCP/IP
network. A 5000 16-bit register data space in the module exchanges data
between the processor and the Modbus TCP/IP network.
Support for the storage and transfer of up to 5000 registers to/from the PLC processor using the block transfer interface
User-definable module memory usage
10/100 Base-T Ethernet-compatible interface
All data mapping begins at Modbus register 40001
Configurable parameters for the Client, including a minimum response delay of 0 to 65535 milliseconds
Floating-point support for Enron, Daniels , and other floating-point data types
Single-Slot, 1769 backplane-compatible
The module is recognized as an Input/Output module and has access to processor memory for data transfer between processor
and module.
Ladder Logic is used for data transfer between module and processor. Sample ladder file included.
Configuration data obtained from configuration text file downloaded to module. Sample configuration file included.
Supports all CompactLogix and MicroLogix 1500 LRP Controllers except 1769-QBFC1B, 1769-L16x, and 1769-L18x.
Modbus TCP/IP Server Protocol Specifications
The server driver supports connections to up to five Modbus TCP/IP Clients using
Service Port 502 with standard MBAP messaging, and up to five Clients using Modbus
RTU/ASCII on Service Port 2000 (and others).
Modbus TCP/IP Client Protocol Specifications
The Client driver supports the active reading and writing of data with Modbus TCP/IP
compatible devices.
This one Client supports up to 100 commands, which can be addressed to one or more
Status Data
Communication error codes, success-fail counters, and port states are available, as well
as module diagnostic data.
Hardware Specifications
Current Load
Standard 1769 single-slot module
800 mA max @ 5 VDC
Power supply distance rating of 2 (L43 and L45
installations on first 2 slots of 1769 bus)
0°C to 60°C (32°F to 140°F)
-40°C to 85°C (-40°F to 185°F)
5% to 95% (with no condensation)
Operating Temp.
Storage Temp.
Relative Humidity
LED Indicators
CFG Port (CFG)
App Port (Ethernet modules)
Shipped with Unit
Power and Module Status
Application Status
CFG Port Activity
Ethernet Port Activity
Error Status
RJ45 (DB-9M with supplied cable)
RS-232 only
No hardware handshaking
10/100 Base-T Ethernet compatible interface
Electrical Isolation 1500 Vrms at 50 Hz to 60 Hz
for 60 s, applied as specified in section 5.3.2 of
IEC 60950: 1991
Ethernet Broadcast Storm Resiliency = less than
or equal to 5000 [ARP] frames-per-second and
less than or equal to 5 minutes duration
RJ45 to DB-9M cables for each port
6-foot RS-232 configuration cable
Where Automation
Additional Products
ProSoft Technology offers a full
complement of hardware and
software solutions for a wide variety
of industrial communication
platforms. For a complete list of
products, visit our web site at:
Ordering Information
To order this product, please use the
Modbus TCP/IP
Module for
To place an order, please contact
your local ProSoft Technology
distributor. For a list of ProSoft
Technology distributors near you,
go to:
and select Where to Buy from the
Copyright © 2014 ProSoft Technology, Inc. All rights
reserved. 10/2/2014
Specifications subject to change without notice.