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Flashing Red CAN/SERIAL LED, No Communication: Although not necessarily a software
installation problem, physical CAN hardware issues and other wiring problems will prevent you
from communicating with other CAN nodes. These types of errors can be easily identified by
looking for a red flashing LED on the ECOM
TM
device. This flashing LED indicates a physical CAN
error, which can often be fixed by resolving one of the following common problems:
Wiring is disconnected or CAN-H and CAN-L wires are reversed
The software using the ECOM
TM
device is configured for the incorrect baud rate. Check the
proper baud rate for your bus and controllers and then reconfigure your software to match.
The CAN bus requires at least one 120 ohm terminating resistor connected between CAN-H
and CAN-L in order to function properly. If the CAN bus you are connecting to is already
functional, this would imply it already has the terminating resistor and thus should not be a
problem. Consult your CAN documentation for specifics about the terminating resistors.
The red flashing light on the CAN LED will also occur if there is no other node on the CAN bus
when the ECOM
TM
attempts to transmit a CAN packet. In this case you must connect and
activate another CAN device in order to resolve this error.
3.2 Windows 10 Driver Installation Issues
Unable to connect to ECOM™ on a Windows 10 PC: As a security measure, the Microsoft Windows
10 OS includes a feature that, when enabled, requires digital signatures on installed drivers. In
order for installation of the ECOM™ driver to be successful on Windows 10 PCs, driver software
version 3.5.0.0 or later must be used.
3.3 Windows 7 Driver Installation Issues
Windows can’t verify the publisher of this driver software: Ensure that Windows 7 has the
security update KB3033929 (This was a critical security update released March 2015) installed. If
this update isn’t installed, the driver installer will report that the driver signature is invalid or
corrupted.
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