Prosoft MVI56-MCM Modbus Master/Slave Communication Module

The MVI56-MCM Modbus Master/Slave Communication Module by ProSoft Technology is a communication interface module designed to enable Rockwell Automation® ControlLogix® processors to seamlessly connect to and communicate with Modbus protocol-based devices. It allows easy integration of Modbus-compatible devices with ControlLogix PLCs, providing both Modbus Master and Modbus Slave capabilities.

Key Features and Benefits:

Licensed Backplane Technology:
- Manufactured under license from Rockwell Automation®.
- High-speed data transfer between the MVI56 module and the ControlLogix processor.
- The module installs as a Generic 1756 module, allowing for easy integration using RSLogix™ 5000.
- Sample ladder logic is included for configuration, and module data can be viewed via controller tags in RSLogix™ 5000.
Modbus Slave Protocol Interface:
- Each application port can emulate a Modbus slave device.
- Supports both Modbus RTU (binary) and Modbus ASCII protocols.
- Includes floating-point data movement support, compatible with industry-specific protocols such as Enron and Daniel®.
- Suitable for integration into SCADA systems and field device interface applications.
Easy Configuration and Monitoring:
- Configuration and monitoring of parameters and data are done directly in RSLogix™.
- Includes LED diagnostics for easy, at-a-glance health checks of the module.
- Menu-driven hardware and protocol diagnostics simplify configuration and troubleshooting.
- Database contents can be viewed via a serial connection to a desktop PC.
ProSoft Technology Support:
- 20 years of experience delivering reliable and high-quality solutions.
- Free, worldwide technical support by phone for pre-sale, setup, or troubleshooting.
- Three-year warranty ensures reliability and protects against equipment failures.
- Free ProSoft software tools for easy integration with hardware.

General Specifications:

Module Type: Single-slot, compatible with the 1756 backplane.
Rack Location: Can be installed in both local or remote racks.
Data Transfer: The module is recognized as an I/O module and facilitates data transfer between the ControlLogix processor and the MVI56 module via ladder logic.
Sample Ladder File: Provided for easy configuration.

Modbus Master/Slave Communication:

Supported Protocols:
- Modbus RTU (binary) with CRC-16 error checking.
- Modbus ASCII mode with LRC error checking.
Baud Rate: Configurable between 110 and 115,200 baud.
Stop Bits: 1 or 2.
Data Size: 7 or 8 bits.
Parity: None, Even, Odd.
RTS Timing Delays: Configurable between 0 to 65535 milliseconds.
Floating-Point Data Movement: Includes support for industry-specific implementations like Enron and Daniel®.
Modbus Function Codes Supported:
- Read/Write Coils (e.g., Read Coil Status, Force/Write Single Coil).
- Read/Write Holding/Input Registers.
- Diagnostics (Slave Only).
- Read/Write Holding Registers (Slave Only).
- Slave ID Report (Slave Only).

Functional Specifications:

Modbus Master Mode:
- The MVI56 module can act as a virtual Modbus Master, issuing commands to other Modbus nodes.
- Supports up to 100 commands per master port.
- Commands can be fully configured for function, slave address, and data address range.
- Polling Commands: Configurable polling modes, including continuous or change-of-data polling.
Modbus Slave Mode:
- In Slave mode, the MVI56 module responds to requests from a remote Modbus Master.
- Data can come from other Modbus slave devices, a Master port, or the module itself.
- Node Address: Software-selectable, from 1 to 247.
- Includes error codes, counters, and port status information for diagnostics.

Hardware Specifications:

Backplane Current Load:
- 800 mA @ 5 Vdc.
- 3 mA @ 24 Vdc.
Operating Temperature:
- 0°C to 60°C (32°F to 140°F).
Storage Temperature:
- -40°C to 85°C (-40°F to 185°F).
Shock and Vibration Resistance:
- 30g operational shock.
- 50g non-operational shock.
- Vibration resistance: 5g from 10 Hz to 150 Hz.
Humidity:
- 5% to 95% relative humidity (non-condensing).
LED Indicators:
- Module Status.
- Backplane Transfer Status.
- Application Status.
- Serial Activity.
Ports:
- CFG Port: RJ45, with DB-9M cable for configuration and diagnostics (RS-232).
- Application Ports (P1 & P2): Configurable for RS-232, RS-485, and RS-422.
- Supports full hardware handshaking and various communication parameters like baud rate, data bits, stop bits, etc.
- 500V Optical Isolation from the backplane.
Cables:
- Shipped with RJ45 to DB-9M cables for each application port.
- Includes a 6-foot RS-232 configuration cable.

Agency Approvals & Certifications:

For detailed certifications and regulatory information, you can visit ProSoft Technology’s website: ProSoft Technology.

Summary:

The MVI56-MCM Modbus Master/Slave Communication Module is a robust solution for integrating Rockwell ControlLogix processors with Modbus-compatible devices. Whether acting as a Modbus Master or Slave, it provides an easy, reliable way to interface with devices such as PLCs, SCADA systems, and other industrial control equipment. With flexible configuration options, fast data transfer speeds, and comprehensive diagnostics, it is ideal for industrial automation and process control applications.

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