USB Cables and Connecting Devices

A common problem facing automation professionals today is the lack of a RS-232 port on their laptops.  Fortunately Rockwell Automation has developed several USB cables, adapter and interfaces to help keep you connected.

Most of the content below comes from Rockwell Knowledge Base Answer ID 41449, but we have added some additional resources not found in that KB article.

Commonly Asked Questions:

  • How can I communicate with controllers or networks from my laptop using the USB port?
  • How does Rockwell plan to support Data Highway Plus, DeviceNet and ControlNet when PCMCIA slots have started being phased out by computer OEMs?  What are the alternative/replacement adapters?
  • Do we have a USB to Data Highway Plus Converter?
  • Does Rockwell Automation sell a USB to Serial converter/adapter for newer computers without a serial port?
  • What is the type of USB cable connector that can be used to connect to a  1756-L71, -L72, -L73, -L74 and -L75 controllers?
  • Is there a USB to Ethernet adapter or converter available?

Answer:
Rockwell Automation supplies USB Interface cables and adapters at this time for Data Highway Plus, DH-485, ControlNet or DeviceNet, Ethernet, and Serial networks. Rockwell Automation does not support the new Express Card format and the present PCMCIA cards will not work with any Express Card adapter that we know of and are no longer being sold.  Please see below for the USB Interfaces Rockwell does currently offer.

Note:  Some pictures may differ from the actual product being sold.

Industrial USB Cables

Product Profile – Industrial USB Cables gmsn-pp011_-en-p

9300-USBCBL-ABHR2 (DF1)
This is an industrial USB highly visible, heavy gauged, 2m long cable that uses USB “A” and “B” connectors.  It plugs into the front of many Rockwell communication modules and controllers to supply a direct communications link within the RSLinx Classic software.  This cable can be used for programming or configuring a CIP network (EtherNet/IP, ControlNet, DeviceNet).  Can be connected to devices ranging from a 1756-EN2T Ethernet module or 1756-DNB/C or higher DeviceNet scanner to a 1756-L71 or 1769-L36ERM controller.

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Industrial USB Cables

9300-USBCBL-CNSL
This cable allows you to directly connect to a Cisco or Stratix® switch. Conveniently configure using the command-line interface and run diagnostics from the switch. This cable replaces the need for a combination of a serial adapter and Cisco console cable.
Industrial USB Cables gmsn-pp011_-en-p

9300-USBCBL-CP3
This cable is designed for use with SLC, PLC-5, ControlLogix and CompactLogix
controllers, as well as PanelView™ Plus 7 Standard and Performance and includes the null adapter for downloads with standard PanelView™ graphic terminals. It replaces the combination of a serial adapter and 1756-CP3 or 1747-CP3 cable.
Industrial USB Cables gmsn-pp011_-en-p

9300-USBCBL-PM02
This cable is designed for use with MicroLogix™ controllers and PanelView Plus 7 Standard and Performance and replaces the combination of a serial adapter and 1761-CBL-PM02.
Industrial USB Cables gmsn-pp011_-en-p

USB Adapters

9300-USBS (DF1)
The 9300-USBS adapter is used in place of a built-in serial port. It communicates DF1 protocol to serial devices via DB 9 connector with appropriate cabling (ie 1747-CP3, 1761-CBL-PM02, 2711-NC13, etc).
9300-USBS Quick Start Guide gmsc10-qs003_-en-p

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9300-USBEL (Ethernet)
The 9300-USBEL adapter is used to communicate via ethernet from a USB port.  It emulates a network connection on the PC similiar to that of a Local Area Network or LAN connection and is set up the same way.
9300-USBE Quick Start Guide GMSC10-QS005A-EN-P

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Legacy Network USB Interfaces

1784-U2DHP (DH+)
The 1784-U2DHP cable is use for communicating to either a DH+ node directly or an entire network via a round 8 pin din connector.  All three baud rates: 57.6k, 115.2k, and 230.4k are supported.
USB to DH+ Installation 1784-in045_-en-p

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1747-UIC (DH-485)
The 1747-UIC converter is use to communincate DH-485 only.  The module has two ports: RS485 and RS232.  A selector switch on the facing is used to switch between these ports. Appropriate cabling for example would be a 1747-C13 or 1747-CP3, etc.  Its important to understand that if connecting via RS232 the end device must be setup to communicate DH-485 first.
USB to DH-485 Installation 1784-in045_-en-p

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1784-U2DN (DeviceNet)
The 1784-U2DN cable is a USB to DeviceNet interface. It must be physically wired into a network’s trunk or drop for connection. The cable comes with a DeviceNet open style-connector for wiring.
USB to DeviceNet Installation 1784-in045_-en-p

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1784-U2CN (ControlNet)
The 1784-U2CN cable is used to connect to a ControlNet network via a ControlNet module’s Network Access Port (NAP) RJ45 port.
USB to ControlNet Installation 1784-in045_-en-p

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