OVMS User Manual page 63

OVMS: Renault Twizy User Guide
MSG API
This has not been implemented yet as an alternative for the CFG commands but is not much of a
problem. It will be most useful only for an App extension for the Twizy though. If you'd like to
develop that, contact the OVMS team.
Two MSG commands exist for querying and clearing the SEVCON logs. See below.
SEVCON fault alerts
The SEVCON continuously monitors itself for critical conditions and tries to alert you about them
by flashing an error LED... which unfortunately is not visible on the Twizy.
The OVMS automatically checks for active SEVCON faults every 10 seconds. Multiple errors can
be active at once, if a new highest level error is detected, the OVMS sends a text alert message
containing the error code and a short textual description as delivered by the SEVCON. The alert
will be sent by MSG and/or SMS protocol depending on your alert configuration (parameter #3
"Notifications").
The alert will only contain the highest priority error. As the SEVCON will clear all active faults on
the next power cycle, the OVMS will also send all active faults to the server using historical
records, so you can retrieve them later on.
Note: if you switch to pre-operational mode for longer than about a second, the SEVCON will
consider this an alert as well – the OVMS does not suppress this error code, so you can use this to
test the alert function.
SEVCON logs
The SEVCON logs and/or counts faults, critical conditions and system events like logins and
firmware upgrades. It also monitors some important values and logs their minimum and maximum
values. The logs can be used to detect errors and to check if a new configuration works well. The
min/max logs can be used to measure engine, controller and battery load.
The OVMS can access these logs:
1. Alerts (currently active faults)
2. Fault events (max 40 entries)
3. System events (max 20 entries)
4. Event counters (10)
5. Min/max log (2)
On categories 2-4, time stamps of the occurences are available. These refer to the "key hours" =
time the SEVCON has been switched on. To be able to relate the log entries to the current time, the
OVMS also reads the current key hours time stamp.
Log categories 2-5 can be reset. A reset may not clear all entries, very important entries can remain.
Also note there are internal logs that cannot be reset by the user, only by SEVCON (for example the
second entry of the min/max log).
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2019/05/02 RT3.9.1