Application Notes
Installing RS-422/485 communication converters
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Description
Covers installation of the USB to serial communication converters offered by IMS, as well as tips for using third-party communications converters.
Applicable
- Liberty* MDrive
- MDrive Linear Actuator
- MDrive Plus
- MForce
Requirements
*Previously Lexium
Details
Hardware Installation
Connect the device between the host and Liberty* MDrive as shown below. The device is pre-wired and ready to use for a single host-to-LMD connection.
The MD-CC404/5-000 consists of two components:
- USB to RS422/485 converter body, which plugs directly into your host computer USB port.
- 2 meter (6 ‘) interface cable which will interface to the DB9 (male) connector on the converter to either:
- Liberty* MDrive P3: DB9 (male) connector (MD-CC404-000).
- Liberty* MDrive P3: M12 circular (male) connector (MD-CC405-000).

Driver Installation
The MD-CC404/5-000 USB to RS-422/485 Converter is a plug-n-play device, which uses a Virtual COM Port (VCP). Drivers will typically automatically install on an Internet-connected PC notebook or Windows tablet when the device is connected to a free USB port. If automatic installation fails, or if you need to download drivers for a non-connected PC, or for an alternate operating system, the drivers may be downloaded from the web at MD-CC404/5-000 Drivers (FTDI VCP Drivers)
Driver Installation (Automatic)
- On an Internet-connected Windows PC or Notebook, plug the MD-CC404/5-000 into an open USB port on your PC.
- The device driver software should automatically install.
Driver Installation (Manual)
- Download the FTDI VCP Drivers from the FTDI web site will open in a new browser tab).
- Follow the instructions located at the FTDI Installation page appropriate to your operating system.
Verify installation (Windows 7/8.x)
- Record the COM port number for later use, either from the notification balloon on the lower right of your desktop or from the Windows device manager, accessible by right-clicking on “My Computer” and selecting manage (Windows 7) or by pressing the WIN+X keys on your keyboard (Windows 8).
Figure 2: Installation successful Figure 3: Computer Device Manager
You may proceed to the setting up the software and initiate communication with your Liberty* MDrive Motion Control step of this tutorial.
Hardware Installation
Connect the device between the host and Liberty* MDrive as shown below. The device is pre-wired and ready to use for a single host-to-motion controller connection.
The MD-CC40x-001 consists of three components:
- Standard USB cable which plugs directly into your host computer USB port.
- USB to RS422/485 inline converter body.
- Interface cable which will interface to the P2 connector of the MDrive/MForce product.
The overall length of the cable is 12 feet (3.6 meters).

Driver Installation
The MD-CC40x-001 USB to RS-422/485 Converter is a plug-n-play device, which uses a Virtual COM Port (VCP). Drivers will typically automatically install on an Internet-connected PC, notebook or Windows tablet when the device is connected to a free USB port. If automatic installation fails, or if you need to download drivers for a non-connected PC, or for an alternate operating system, the drivers may be downloaded from the web at Silicon Labs CP210x USB to UART Bridge VCP Drivers
Driver Installation (Automatic)
- On an Internet-connected Windows PC or Notebook, plug the MD-CC40x-001 into an open USB port on your PC.
- The device driver software should automatically install.
Driver Installation (Manual)
- Download the Silicon Labs CP210x USB to UART Bridge VCP Drivers from the Silicon Labs web site (will open in a new browser tab).
- Extract the driver *.zip file to a location on your PC.
- Double click the executable file appropriate to your operating system x86 (32-bit) or x64 (64-bit).
- Follow the dialogs and prompts to install the drivers.
Verify installation (Windows 7/8.x)
- Record the COM port number for later use, either from the notification balloon on the lower right of your desktop or from the Windows device manager, accessible by right-clicking on “My Computer” and selecting manage (Windows 7) or by pressing the WIN+X keys on your keyboard (Windows 8).


You may proceed to the setting up the software and initiate communication with your MDrivePlus or MForce.
Installation failure Q & A
Q: I installed the device, and the driver installation failed. My error message and device manager show the part number “MD-CC400-000”. What do I do?
Installation Error
A: If you see this part number it means that you have an older MD-CC40x. This converter has a legacy device ID and will ONLY function on x86 (32-bit) Windows systems. The legacy drivers and installation instructions may be found at:
Driver Package | Installation Instructions
Q: I only have access to a 64-bit system.
A: Please contact Applications Support for assistance.
The Novanta IMS Liberty* MDrive product will function with any third party RS-422/485 converter or PC card. See the manufacturer documentation for driver installation. Reference the Hardware: wiring and cabling tab for connection information.
Notes and checkpoints
- Ensure that the adapter being used is set to 9600 kbps, the default BAUD rate for Liberty* MDrive products.
- Ensure that full duplex (RS-422) is used to communicate with single units, half duplex (RS-485) will only function in multi-drop mode.
*Previously Lexium
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