Timing based function blocks
Base class which all timers are extended from
Generates a periodic boolean signal for monitoring from another source (ADS, PLC, etc)
Off delay timer with additional information
Off delay retentive reset timer with additional information
Off delay timer with additional information
On delay retentive reset timer with additional information
Monitors a boolean signal, and sets output TRUE if no change (rising or falling edge) has occured in a specified time
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