Document Reference No.: ES_000005
USB2-F-7x01 Full-Speed USB to 1-Port CANbus Adapter User Guide
Version 1.3
Clearance No.: ES#02
©2008 - 2010 EasySYNC Ltd.
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4.1.7
Open CAN Channel for Listen Only (L)
Summary
Opens the CAN channel in Listen Only mode. This is essentially the same as Open, although
attempts to use either Transmit command (T or t) will result in an error. Listen Only mode is
useful for monitoring the CAN channel without interaction from the CAN bus. CAN channel must
be initiated with selected speed (S or s) prior to use of Listen.
When in Listen mode, the channel must first be Closed (C) and then opened with Open (O) prior
to attempting to transmit frames.
NOTE:
A minimum of three nodes are required on the CANbus network for Listen mode to
function.
Definition
L<CR>
Parameters
None
Remarks
Example:
L<CR>
Open CAN channel in Listen Only mode
Received data is automatically sent from the CAN network to the controlling application.
Return Codes
<CR> = OK
<BELL> = ERROR
