Planar WeatherBright LC3251, Product Manual

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LC3251 / LC4751 Product Manual 8
System Status and Fault Monitoring
The WeatherBright™ LC3251 and LC4751 displays incorporate a microcontroller that monitors and
controls overall display functionality without user intervention. The microcontroller provides thermal
and power management of the display and continuous fault checking. It checks the status or looks for
faults at a maximum interval of every 10 seconds. The display continues operating even with a failure
unless directed otherwise. Fault tests are independent from each other. Actions taken in response to a
particular fault will not stop fault monitoring and response for other faults. Faults remain stored in
non-volatile memory even if conditions indicate resumption of normal operation. For further
information on system control and status, see
Appendix 1 – RS-232 Serial Interface .