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Overload Errors<br />
If <strong>CANgate</strong> is heavily loaded (many slot definitions, rapid slot poll rate, fast host/CAN baud rates), errors such as:<br />
CAN1 RX OVERFLOW<br />
may be issued, indicating that one or more incoming CAN messages have been dropped. Even though these events are not<br />
reported in non-verbose mode, they are still counted, and the event counts may be displayed using the STATS command<br />
(P26).<br />
In a similar vein,<br />
PROC TIME OVERFLOW<br />
indicates that <strong>CANgate</strong> may not have satisfied the requested slot sample rate. This error may sometimes occur if a<br />
diagnostic command is entered that produces a large volume of output text (eg STATUS).<br />
Comms Errors<br />
If a large number of communications errors occur on a CAN port, the port will be briefly shut down and the following message<br />
returned (if in verbose mode):<br />
CAN1 BUS ERROR – DISCONNECTED<br />
The most common cause for this is an incorrectly configured bit rate, although it may also be caused by noise or an<br />
intermittent electrical connection. After two seconds <strong>CANgate</strong> will re-enable the port and attempt communication again.<br />
All comms errors on the CAN, host and GPS ports are counted and counts may be displayed using the STATS command<br />
(P26).<br />
Certain ECU responses will also be indicated via an error message (if in Verbose mode), eg.<br />
ISO14230 NEGATIVE REPLY – 11<br />
which in this case indicates that the requested service is not available.<br />
Internal Errors<br />
If the <strong>CANgate</strong> firmware detects a serious internal inconsistency it will force a hardware reset and display a message such<br />
as:<br />
DATA ABORT EXCEPTION AT 000049F8<br />
or<br />
INTERNAL ERROR 1 (00000008)<br />
Following the reset, <strong>CANgate</strong> will attempt to resume normal operation.<br />
If one of these errors ever occur, please note the circumstances of the failure and contact <strong>dataTaker</strong> support.<br />
UM-0086-A2 <strong>CANgate</strong> User’s <strong>Manual</strong> Page 36