Hardware Changes
Revisions A and B of the U10 FT used a Renesas FT 3120 Smart Transceiver. Revision C uses a Renesas FT 6050 Smart Transceiver. The Revision C hardware is taller by 1.7mm, is branded as an EnOcean product instead of an Echelon product, has updated certification marks, includes different cables and connectors, and is marked on the back as Rev C. See the U10 FT Product Change and Discontinuation Notice for details.
SVC LED
As shipped from EnOcean, when you first attach a U10 FT Rev C to a computer, the SVC LED may flash at a 1/2 Hz frequency. This behavior is different from the U10 FT Rev B. The flashing SVC LED indicates the U10 is not configured. This is not an error indicator and can be ignored. The flashing will stop if you select the U10 FT Rev C when you open a LON tool such as IzoT CT. If the tool or application you are using does not stop the SVC LED flashing, you can stop it with NodeUtil using the following command: nodeutil -b -dlon[n]. This configures the interface on a random subnet and node 125 address on the zero-length domain. This state will persist between connections to the computer. NodeUtil is available as a free download at https://enoceanwiki.atlassian.net/wiki/spaces/LON/pages/2425007/NodeUtil+and+NodeLoad.
Windows Device Manager
The Windows device manager shows the U10 FT Rev C under the Ports (COM & LPT) branch as Echelon U60 USB Network Interface (COM[n]). The original U10 adapter shows up under Universal Serial Bus controllers as Echelon U10/U20 USB Network Interface. The U60 reference is not an error and can be ignored.
LonWorks Interface Control Panel
The following images show the differences visible from the OpenLDV 5 LonWorks Interfaces control panel application. In this example, LON1 is a U10 FT Rev B interface, and LON3 is a U10 FT Rev C interface.
The Service button at the top of the LonWorks Interfaces control panel does not generate a Service message from the U10 FT Rev C.
The Reset button at the top of the LonWorks Interfaces control panel does not blink the SVC LED for a U10 FT Rev C.
The Wink button at the top of the LonWorks Interfaces control panel toggles the state of the SVC LED for a U10 FT Rev C and flashes the SVC LED for a U10 FT Rev B.
U10 FT Device Name
The name for any revision of the U10 FT within any tool or application using OpenLDV is "LON[n]", where n is a number.
For a U10 FT Rev A or B, the value for n is assigned sequentially as each unique U10 is plugged into a USB port on the computer. For example, the first U10 Rev B that you attach to a computer is identified as LON1. If you attach the same U10 to another physical USB port on the same computer, it remains as LON1. The next unique U10 connected to the same computer will be named LON2, even if the first U10 is no longer physically attached.
For a U10 FT Rev C, the value for n is assigned sequentially by physical USB port. For example, if you attach a U10 Rev C to the first USB port on your computer, it will be named LON1. If you attach the same U10 Rev C to the second USB port on your computer it will be named LON2. If you attach it to the first USB port again, it will again be named LON1.
Message Buffers
The U10 Rev C provides a total of 7095 bytes for Network and Application buffers. The U10 Rev B is limited to 1084 bytes. By default, the U10 Rev C uses the larger memory to provide more application and network buffers than the U10 Rev B. This larger memory eliminates the requirement to tune buffer counts and sizes as was sometimes required for the U10 Rev B.
OpenLDV
Software accessing the U10 FT Rev C using the EnOcean OpenLDV 5 LON driver is not impacted. EnOcean tools and APIs for LON, including IzoT CT, OpenLNS CT, LonMaker, IzoT Net Server, OpenLNS Server, and LNS Server use OpenLDV 5 to communicate with a U10 FT.
The U10 Rev C only works on OpenLDV 5 or newer. You can determine the version of OpenLDV installed on your computer from the Help.About menu command in the LonWorks Interfaces control panel application. If you have IzoT Net Server 4, OpenLNS Server 4, or any earlier version of LNS, and you are running the version originally installed with the server software, you will have to update the OpenLDV driver. OpenLDV 5 is available as a free download at https://enoceanwiki.atlassian.net/wiki/spaces/LON/pages/2426498/OpenLDV+Network+Driver. Select the download link under Current Stable Release.
Windows XP
OpenLDV 5.1 and newer releases require a version of Microsoft .NET that is not supported on Windows XP.. To use a U10 FT Rev C on a computer with Windows XP, download and install OpenLDV 5.0 prior to plugging the U10 into your computer.