Modbus Master/Slave Enhanced Communications Interface Module with Reduced Data Block
MVI56E-MCMR
The Enhanced Modbus Master/Slave Communication Module with Reduced Data Block (MVI56E-MCMR) allows Rockwell Automation ControlLogix processors to easily interface with devices using the Modbus RTU/ASCII serial communications protocol.
Compatible devices include a wide variety of instruments, process measurement devices, popular brands of programmable logic controllers (PLCs) and programmable automation controllers (PACs).
The Enhanced Modbus Master/Slave Communication Module with Reduced Data Block acts as an input/output module on the ControlLogix backplane, making Modbus data appear as I/O data to the processor. Backplane data transfers to and from the processor are asynchronous from communications on the Modbus network. Two independently-configurable serial ports can operate on the same or different Modbus networks. Each port can be configured as a Modbus Master or Slave, sharing the same user-controlled 5000-word database.
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Features
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Benefits
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Backward Compatibility
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- All MVI56E Enhanced products are backward-compatible allowing direct replacement of earlier MVI56 modules without the need to change existing controller programs
- Enjoy Enhanced features and flexibility without incurring expensive reprogramming costs
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Reduced Data Block
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- Reduced Data Block implementation requires less backplane/network bandwidth
- Smaller data blocks are easier to schedule and transfer on ControlNet networks
- Ideal solution for remote chassis installations using ControlNet and redundant controllers
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CIPconnect-enabled
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- ProSoft Configuration Builder software (PCB), with CIPconnect, facilitates remote user access across the ControlLogix backplane through Rockwell Automation's 1756-ENBT module
- Configure, diagnose, and analyze process data and communications status
- CIPconnect can bridge through multiple ENBT/CNBT links to connect to MVI56E-MCMRs installed in remote chassis for configuration and diagnostics
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4-digit LED display
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- See critical configuration and status information without having to hook up to the ports
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Ethernet Port
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- Local and remote configuration and diagnostics access available through the Ethernet Port
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Configuration
ProSoft Configuration Builder (PCB) provides a PC-based software configuration solution for quick and easy management of ProSoft Technology modules, as well as viewing module and network diagnostics. PCB provides an excellent diagnostic tool for the module when used with CIPconnect technology, providing communication over local and remote chassis. The MVI56E-MCMR Setup Guide and Sample configuration provide a quick start-up with step-by-step instructions on how to move data from the Modbus network to the controller.
General Specifications
- Backward-compatible with previous Enhanced Modbus Master/Slave with Reduced Data Block (MVI56-MCMR) version
- Single Slot - 1756 ControlLogix backplane compatible
- 10/100 MB Ethernet port for configuration with Auto Cable Crossover Detection
- User-definable module data memory mapping of up to 5000 16-bit registers
- CIPconnect-enabled network configuration and diagnostics monitoring using ControlLogix 1756-ENxT modules and EtherNet/IP pass-thru communications
- Sample Ladder Logic or Add-On Instruction (AOI) used for data transfers between module and processor
- 4-character, scrolling LED display of status and diagnostic data in plain English
- ProSoft Discovery Service (PDS) software finds the module on the network and assigns a temporary IP address to facilitate module access and configuration
- Personality Module (non-volatile CF card) to store all configuration settings, allowing quick in-the-field product replacement by transferring the CF card
Functional Specifications
- Adjustable Modbus floating point data support in Enron, Daniels and other formats
- Powerful Modbus network analyzer diagnostics using ProSoft Configuration Builder
- Optional Message functions, like User-configured Command and Event Command messages, give users the option to place normally automatic Modbus polling under logic control for special situations.
- Error codes, network error counters, and port status data may be stored in user data memory or requested by using unscheduled MSG (message) instructions
- 40 Word Data Block (Scheduled)
Modbus General Specifications
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Com munication parameters
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Baud Rate: 110 baud to 115.2 kbps
Stop Bits: 1 or 2
Data Size: 7 or 8 bits
Parity: None, Even, Odd
RTS Timing delays: 0 to 65535 milliseconds
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Modbus Modes
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RTU mode (binary) with CRC-16
ASCII mode with LRC error checking
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Floating Point Data
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Floating point data movement supported, including configurable support for Enron and Daniel implementations
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Modbus Function Codes
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1: Read Coils Status
2: Read Input Status
3: Read Holding Registers
4: Read Input Registers
5: Force (Write) Single Coil
6: Preset (Write) Single Register
8: Diagnostics
15: Force (Write) Multiple Coils
16: Preset (Write) Multiple Data Registers
17: Report Slave ID
22: Mask Write 4x Register
23: Read/Write 4x Registers
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Modbus Master Specifications
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Command List
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Up to 100 commands per Master port, each fully configurable for function code, slave address, register to/from addressing and word/bit count.
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Optimized Polling
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Configuration options allow Master ports and commands to be optimized to poll slaves with communication problems less frequently.
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Command Status/Error
Monitoring
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Command Status or Error codes are generated for each command as it executes, allowing careful monitoring of communication health between the Master and its Slaves.
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Modbus Slave Specifications
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Full Memory Access
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A port configured as a Modbus Slave permits a remote Master to read from or write to any of the 5000 registers that make up the user memory database.
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Multi-source Slave data
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Data presented at the Slave port can be derived from other Modbus Slave devices on a different network through the module’s Master port or from the processor tag database.
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Node address
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1 to 247 (software selectable)
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Status Data
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Slave port error codes, counters and statuses are available separately for each port when configured as a Slave
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Hardware Specifications
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General
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Specification
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Description
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Backplane Current Load
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800 mA @ 5 V DC
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Operating Temperature
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0 to 60°C (32 to 140°F)
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Storage Temperature
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-40 to 85°C (-40 to 185°F)
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Shock
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30 g operational
50 g non-operational
Vibration: 5 g from 10 Hz to 150 Hz
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Relative Humidity
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5% to 95% (without condensation)
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LED Indicators
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Battery Status (ERR)
Application Status (APP)
Module Status (OK)
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4-Character, Scrolling, Alpha-Numeric LED Display
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Shows Module, Version, IP, Port Master/Slave Setting, Port Status, and Error Information
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Debug/Configuration Ethernet port (E1 - Config)
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Ethernet Port
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10/100 Base-T, RJ45 Connector, for CAT5 cable
Link and Activity LED indicators
Auto-crossover cable detection
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Serial Application ports (P1 & P2)
Full hardware handshaking control, providing radio, modem, and multi-drop support
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Software configurable communication parameters
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Baud rate: 110 baud to 115.2 kbps
RS-232, 485 and 422
Parity: none, odd or even
Data bits: 5, 6, 7, or 8
Stop bits: 1 or 2
RTS on/off delay: 0 to 65535 milliseconds
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App Ports (P1, P2)
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RJ45 (DB-9M with supplied adapter cable)
Configurable RS-232 hardware handshaking
500V Optical isolation from backplane
RS-232, RS-422, RS-485 jumper-select, each port
RX (Receive) and TX (Transmit) LEDs, each port
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Shipped with Unit
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RJ45 to DB-9M cables for each serial port
5 foot Ethernet Straight-Thru Cable (Gray)
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Ordering Information
| MVI56E-MCMR |
Modbus Master/Slave Enhanced Communications Interface Module with Reduced Data Block |
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| To place an order, please contact your local ProSoft Technology, Inc. distributor. For a list of ProSoft distributors near you, click here. |
Distributors:
Place your order by email to orders@prosoft-technology.com:, fax to +1 661-716-5101.
Sales and Support:
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