ControlLogix Enhanced Modbus Master/Slave Communications Interface Module with Reduced Data Block
MVI56E-MCMR
The MVI56E-MCMR Enhanced Modbus Master/Slave Communication Module with Reduced Data Block 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 MVI56E-MCMR 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.
The MVI56E-MCMR utilizes a reduced Input/Output (I/O) data block for transferring data to and from a ControlLogix processor. This reduced data block makes it ideal for use in remote rack applications over ControlNet™. For EtherNet/IP™ applications where bandwidth is not an issue, it is strongly recommended to use the MVI56E- MCM.
- Architectures
- Features and Benefits
- Configuration
- Specifications
- Hardware
- Downloads
- Videos
- Certifications
Architectures
|
Features and Benefits
| Features |
Benefits |
| Backward Compatibility |
|
| Reduced Data Block |
|
| CIPconnect-enabled |
|
| 4-digit LED display |
|
Configuration
ProSoft Configuration Builder (PCB) provides a graphical configuration tool for quick and easy management of module configuration files, as well as viewing communication and module diagnostic information.
CIPconnect technology routes connections over multiple EtherNet/IP or ControlNet paths, allowing you to manage the module from remote locations.
The MVI56E-MCMR Setup Guide, with the sample configuration, provides step-by-step instructions on how to move data through the module from the network to the processor.
Specifications
- Backward-compatible with previous 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
Modbus General Specifications
| Communication Parameters |
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 |
| Modbus Modes |
RTU mode (binary) with CRC-16 ASCII mode with LRC error checking |
| Floating Point Data |
Floating point data movement supported, including configurable support for Enron and Daniel implementations |
| Modbus Function Codes |
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 |
Hardware
| Specification |
Description |
| Backplane Current Load |
800 mA @ 5 V DC3 mA @ 24 Vdc |
| Operating Temperature |
0°C to 60°C (32°F to 140°F) - MVI56E-MCM |
| Storage Temperature |
-40°C to 85°C (-40°F to 185°F) |
| Shock: |
30g Operational |
| Relative Humidity |
5 to 95% (without condensing) |
| LED Indicators |
Battery Status (ERR) Application Status (APP) Module Status (OK) |
| 4-Character, Scrolling, Alpha-Numeric LED Display |
Shows Module, Version, IP, Port Master/SlaveSetting, Port Status, and Error Information |
| Debug/Configuration Ethernet port (E1 - Config) |
|
| Ethernet Port |
10/100 Base-T, RJ45 Connector, for CAT5 cable Link and Activity LED indicators Auto-crossover cable detection |
| Serial Application ports (P1 & P2) Full hardware handshaking control, providing radio, modem, and multi-drop support |
|
| Software configurable communication parameters |
Baud rate: 110 baud to 115.2kbps RS-232, 485 and 422 Parity: none, odd or even Data bits: 5, 6, 7, 8 Stop bits: 1 or 2 RTS on/off delay: 0 to 65535 milliseconds |
| Serial Applications Ports (P1, P2) |
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 |
| Shipped with Unit |
RJ45 to DB-9M cables for each serial port 5 foot Ethernet Straight-Thru Cable (Gray) |
Certifications
| CB Safety | 504.75 kB | Last Modified 10/06/2021 |
| Country Approval - Eurasian Customs Union Conformity (EAC) (Wired) | 1.92 MB | Last Modified 07/10/2020 |
| IECEx | 162.02 kB | Last Modified 05/25/2016 |
| Declaration of Conformity (RoHS/CE) | 136.60 kB | Last Modified 01/20/2023 |
| ATEX Letter of Conformity | 101.65 kB | Last Modified 05/12/2022 |
| UL CoC | 83.45 kB | Last Modified 06/23/2020 |
| Korean KC Registration | 586.65 kB | Last Modified 09/11/2020 |
| Declaration of REACH Compliance | 134.07 kB | Last Modified 05/20/2022 |