ProSoft MVI56-MCM Modbus Communication Module
$123.00
$320.00
Description
ProSoft MVI56-MCM Modbus Communication Module
The ProSoft MVI56-MCM, also cataloged as the MVI56-MCM Modbus Communication Module, provides serial Modbus RTU or ASCII communication for Allen-Bradley ControlLogix platforms. The module transfers data between ControlLogix tags and serial field devices through configurable Modbus Master or Slave ports.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | MVI56-MCM |
| Brand | ProSoft Technology |
| Product Type | Modbus Communication Module |
| Platform | Allen-Bradley ControlLogix |
| Chassis Compatibility | Single-slot 1756 ControlLogix chassis; local or remote rack |
| Weight | 1.90 lb |
| Operating Temp | 0 deg C to 60 deg C |
| Storage Temp | -40 deg C to 85 deg C |
| Relative Humidity | 5% to 95%, non-condensing |
| Power Consumption | 800 mA at 5 VDC; 3 mA at 24 VDC |
| Configuration Port | 1 x RS-232 DB-9M |
| Application Ports | 2 x independently configurable serial ports |
| Application Connectors | RJ45; RJ45-to-DB9 adapters included |
| Serial Interfaces | RS-232, RS-422, RS-485 |
| Interface Selection | Jumper-selectable per application port |
| Baud Rate | 110 bps to 115.2 kbps |
| Serial Port Isolation | 500 V or 1000 V optical isolation from backplane |
| Modbus Modes | Master or Slave per application port |
| Modbus Protocols | Modbus RTU and Modbus ASCII |
| Modbus Commands | Up to 100 configurable commands per Master port |
| Supported Function Codes | 1, 2, 3, 4, 5, 6, 15, 16 |
| Floating-Point Support | Enron Modbus floating-point |
| Status Indication | Module Status, Backplane Transfer Status, Application Status, Serial Activity/Error |
Protocol Conversion and Serial Interface Characteristics
The MVI56-MCM operates as an I/O module on the ControlLogix backplane while exchanging serial data with Modbus devices. Each application port can operate independently as a Modbus Master or Modbus Slave, allowing separate serial networks within one module.
The two application ports support RS-232, RS-422, or RS-485 through jumper-selectable electrical interfaces. Baud rates range from 110 bps to 115.2 kbps, while optical isolation separates the application serial interfaces from the ControlLogix backplane.
Each Master port supports up to 100 configurable commands, with additional command control available through ladder logic blocks. Supported transactions include coil, discrete input, holding register, input register, and single or multiple write operations.
Frequently Asked Questions
Q: Can the two application ports use different Modbus operating modes?
A: Yes. Each application port can be configured independently as either a Modbus Master or Modbus Slave.
Q: Which electrical serial interfaces are available on the application ports?
A: Each application port supports RS-232, RS-422, or RS-485 with jumper-selectable interface configuration.
Q: What backplane power load does the module require?
A: The supplied specifications identify a backplane load of 800 mA at 5 VDC and 3 mA at 24 VDC.
Field Installation Guidelines
Install the MVI56-MCM in an appropriate single-slot 1756 ControlLogix chassis position and verify chassis power capacity before energization.
Set each application port's RS-232, RS-422, or RS-485 interface configuration according to the connected field device.
Use the supplied RJ45-to-DB9 adapters where required and verify connector pin assignments before applying communication signals.
For RS-485 networks, maintain correct differential polarity and apply termination according to the connected network topology and device requirements.
Route serial communication cables separately from high-voltage power conductors, contactor wiring, and high-current switching circuits to reduce electromagnetic interference.
Connect cable shields according to the plant grounding standard and avoid creating unintended shield-current paths between isolated equipment.
Use the CFG RS-232 port for configuration, debugging, and diagnostics rather than treating it as an application Modbus port.
Before commissioning, verify baud rate, serial mode, Modbus address, function-code configuration, and ControlLogix tag mapping against the connected device documentation.
Confirm module status, backplane transfer status, application status, and serial activity/error indicators during startup and communication testing.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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