PRODUCT INFORMATION
Product Overview
The Allen-Bradley MVI46-MCM is a Modbus Master/Slave Network Interface Module designed for the SLC 500 series. It interfaces compatible SLC 500 controllers directly with Modbus devices across an industrial network. The module mounts into a single slot of an Allen-Bradley 1746 chassis backplane. It requires an SLC 5/02 processor with M0/M1 capability or a later controller model. Operating power comes directly from the backplane, drawing 800 mA at 5.1 VDC.
This communication module supports ladder logic data transfer with an internal memory size of up to 5000 registers. It features two serial application ports supporting RS-232, RS-422, and RS-485 physical communication layers. Each application port executes up to 100 individual Modbus commands. A dedicated RJ45 RS-232 configuration port provides debug and configuration file downloads. Diagnostics include visual status LEDs for module, backplane transfer, application, and serial port operations.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Weight | 1.50 lbs (0.68 kg) |
|---|
| Backplane Current Load | 800 mA @ 5.1 VDC |
|---|
| Module width | Single slot |
|---|
| Compatible rack | 1746 chassis |
|---|
| Supported rack configuration | Local and extended rack only |
|---|
| Compatible processors | SLC 5/02 M0/M1 capable processors or later models |
|---|
| Configuration port | RJ45 (DB-9M with supplied cable) RS-232 only |
|---|
| Application Port | Two (2) RJ45 RS-232/422/485 Application ports |
|---|
| LED indicators | Module status, Backplane transfer status, Application status, Serial activity and error LED status |
|---|
| Operating Temperature | 32° F to 140° F (0° C to 60° C) |
|---|
| Storage Temperature | -40° F to 185° F (-40° C to 85° C) |
|---|
| Operating Shock | 30 g |
|---|
| Relative humidity | 5% to 95% (without condensation) |
|---|
| Slot | 1 |
|---|
| Data Transfer Type | Ladder Logic |
|---|
| Registers | 5000 max. |
|---|
| Commands per Port | 100 max. |
|---|
| Shock | 30g Operational |
|---|
| UPC | 886739898190 |
|---|
TECHNICAL INFORMATION
Features
- Provides two independent RS-232, RS-422, or RS-485 serial communication application ports.
- Executes up to 100 Modbus commands per application port.
- Includes an internal database holding up to 5000 registers for asynchronous backplane data exchange.
- Dedicated RS-232 configuration and debug port accessed via an RJ45 connector.
- Onboard LEDs display module health, backplane activity, and serial communications status.
- Powered directly via the 1746 rack backplane using 800 mA at 5.1 VDC.
TECHNICAL INFORMATION
Applications
- Modbus RTU or ASCII host instrument interfacing in SLC 500 control systems.
- Foreign device data concentrator systems on industrial serial networks.
- SCADA communication links for pipeline and offshore automation platforms.
- Equipment monitoring in mining, food processing, and pulp and paper facilities.
TECHNICAL INFORMATION
Connections / Interfaces
- Two RJ45 combo serial ports supporting RS-232, RS-422, and RS-485 signals.
- One RJ45 serial port dedicated strictly to RS-232 configuration and diagnostic routines.
TECHNICAL INFORMATION
Installation Guidelines
- Install the module into any available single slot within a local or extended 1746 chassis.
- Do not install the module inside remote I/O chassis racks.
- Ensure backplane power supplies can provide the required 800 mA at 5.1 VDC load.
TECHNICAL INFORMATION
Configuration Guidelines
- Create the module configuration settings within an external text configuration file.
- Download configuration files through the dedicated RJ45 RS-232 debug and setup port.
- Implement ladder logic in the SLC 500 processor to handle data block transfers.
TECHNICAL INFORMATION
Compatibility
- Compatible with Allen-Bradley 1746 I/O chassis in local and extended rack configurations.
- Requires an SLC 5/02 processor with M0/M1 capability or later SLC 500 controllers.
- Supports Modbus devices operating on RS-232, RS-422, or RS-485 serial interfaces.
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with Allen-Bradley 1746 I/O chassis in local and extended rack configurations. Requires an SLC 5/02 processor with M0/M1 capability or later SLC 500 controllers. Supports Modbus devices operating on RS-232, RS-422, or RS-485 serial interfaces.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
Which chassis racks support the MVI46-MCM module?
The module operates in local and extended 1746 racks. It does not support remote I/O racks.
What processors are compatible with the MVI46-MCM?
It requires an SLC 5/02 processor with M0/M1 capability or a later SLC 500 model.
What are the backplane power requirements for this module?
The module consumes 800 mA of current at 5.1 VDC from the 1746 backplane power supply.
How many serial ports are available on the module?
It provides two combo RS-232/422/485 application ports and one dedicated RS-232 RJ45 configuration port.
