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.
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