System Requirements 

The MVI56E-MCM module requires the following minimum hardware and software components: 

 Rockwell Automation ControlLogix® processor (firmware version 10 or higher) with compatible limited voltage power supply and one free slot in the rack for the MVI56EMCM module. 

The module requires 800mA of available 5 VDC and 3 mA of available 24 VDC power. 

 Rockwell Automation RSLogix 5000 programming software o Version 16 or higher required for Add-On Instruction o Version 15 or lower must use Sample Ladder, available from 

 Rockwell Automation RSLinx® communication software version 2.51 or higher 

 ProSoft Configuration Builder (PCB) (included) 

 Pentium® II 450 MHz minimum. Pentium III 733 MHz (or better) recommended 

 Supported operating systems: o Microsoft Windows 10 o Microsoft Windows 7 Professional (32-or 64-bit) o Microsoft Windows XP Professional with Service Pack 1 or 2 o Microsoft Windows Vista o Microsoft Windows 2000 Professional with Service Pack 1, 2, or 3 o Microsoft Windows Server 2003 

 128 Mbytes of RAM minimum, 256 Mbytes of RAM recommended 

 100 Mbytes of free hard disk space (or more based on application requirements) 

 256-color VGA graphics adapter, 800 x 600 minimum resolution (True Color 1024  768 recommended)

Before you begin configuring the module, consider the following questions. Your answers will help you determine the scope of your project, and the configuration requirements for a successful deployment. 

1 ____________ Are you creating a new application or integrating the module into an existing application? Most applications can use the Sample Add-On Instruction or Sample Ladder Logic without any edits to the Sample Program. 

2 ____________ Which slot number in the chassis will the MVI56E-MCM module occupy? For communication to occur, you must enter the correct slot number in the sample program. 

3 ____________ Are RSLogix 5000 and RSLinx software installed? RSLogix and RSLinx are required to communicate to the ControlLogix processor (1756-L1, L55, L61 & L63). Sample Ladder programs are available for different versions of RSLogix 5000. 

4 ____________ How many words of data do you need to transfer in your application (from ControlLogix to Module / to ControlLogix from Module)? The MVI56E-MCM module can transfer a maximum of 10,000 (16-bit) registers to and from the ControlLogix processor. The Sample Ladder transfers 600 words to the ControlLogix processor (into the Read Data array), and obtains 600 words from the ControlLogix processor (from the Write Data array) 

5 ____________ Will you be using the module as a Modbus Master or Modbus Slave? Will you be transferring data using Modbus RTU or Modbus ASCII? Modbus is a Master/Slave network. Only one Master is allowed on the serial communications line (max 32 devices/RS485). The Master is responsible for polling data from the Slaves on the network. 

6 ____________ For a Modbus Master, what Slave Device Addresses and Modbus Data Addresses do you need to exchange data with on the Modbus network? For a Modbus Master, you must know the Slave Device Address number of each Slave device to poll. You also need the Modbus address (for example, coil 00001, register 40001) of the data to read from or write to each Slave device. 

7 ____________ For a Modbus Slave, how many words or bits of data do you need to send to the Master device? The MVI56E-MCM module can send data to a Modbus Master as 0x coil data, 1x input coil data, 3x input registers, and 4x holding registers. The sample program transfers 600 (16-bit) words or 9600 bits to the ControlLogix processor, and 600 (16- bit) words or 9600 bits from the ControlLogix processor. 

8 Serial Communication Parameters for the Modbus network: ____________ Baud rate? ____________ Data bits? ____________ Parity? ____________ Stop bits? Required for both Master and Slave configurations.

9 ____________ Wiring type to use (RS232, 422 or 485). Configured by Setting Jumpers. Required for proper implementation of the module in Master and Slave configurations.

Qty. Part Name Part Number Part Description 

1 MVI56E-MCM Module MVI56E-MCM Modbus Communication Module 

2 Cable Cable #14, RJ45 to DB9 Male Adapter cable For DB9 Connection to Module’s Application Serial Port 

2 Adapter 1454-9F Two Adapters, DB9 Female to Screw Terminal. For RS422 or RS485 Connections to Port 1 and 2 of the Module

There are three jumpers located at the bottom of the module. The first two jumpers (P1 and P2) set the serial communication mode: RS-232, RS-422 or RS-485. The following illustration shows the MVI56E-MCM jumper configuration, with the Setup Jumper OFF.

Installing the Module in the Rack Make sure your ControlLogix processor and power supply are installed and configured, before installing the MVI56E-MCM module. Refer to your Rockwell Automation product documentation for installation instructions.

After you have checked the placement of the jumpers, insert the MVI56E-MCM into the ControlLogix chassis. Use the same technique recommended by Rockwell Automation to remove and install ControlLogix modules. You can install or remove ControlLogix system components while chassis power is applied and the system is operating. However, please note the following warning.

1 Align the module with the top and bottom guides, and then slide it into the rack until the module is firmly against the backplane connector. 

2 With a firm, steady push, snap the module into place. 

3 Check that the holding clips on the top and bottom of the module are securely in the locking holes of the rack. 

4 Make a note of the slot location. You must identify the slot in which the module is installed in order for the sample program to work correctly. Slot numbers are identified on the green circuit board (backplane) of the ControlLogix rack. 5 Turn power ON.