System information

OMI 2.3.1 Release Notes
OMI 2.3.1 Release Notes 37
Hardware Limitations
This section describes specific limitations of and cautions about Cognex frame
grabbers.
Incorrectly Configured MVS-8100 May Fail Silently
If OMI quits immediately after you launch it, you may have misconfigured your
MVS-8100,
If you have configured jumper J3 with pins 2 and 3 covered so that connected cameras
do not draw power from the PCI bus, you must connect Cognex cable P/N 300-0175 to
the external power connector J2.
See your MVS-8100 Hardware Manual for diagrams and additional information.
Cannot Install MVS-8100L Drivers
If you are having trouble installing the Cognex MVS-8100L drivers, make sure that any
previously instead drivers were completely removed. See Uninstalling OMI Software on
page 33.
In particular, search within the \winnt directory for all files ending in .inf that contain the
string "Cognex" in their contents. You can use the Search command in the Start menu
to do this. Delete these files and any similarly named files that end in .pnf. For example,
if you find the string "Cognex" in the file foo.inf, you would also delete the file foo.pnf if it
exists.
MVS-8100L Appears Twice in Device Manager
Listings
Under Windows 2000 and Windows 98, the Cognex MVS-8100L appears in the Device
Manager list as two devices:
Cognex Frame Grabber 8100L
Cognex Frame Grabber 8100L (0x878)
This condition is normal for the MVS-8100L. It is related to the way the Windows Plug
and Play system tries to identify the MVS-8100L.