Input variables / System values
10
System values
The current system values are displayed in the "System values" menu.
The following system values can be selected as the source for function input variables and CAN and
DL outputs:
• General
• Time
• Date
• Sun
General system values
When programmed accordingly, these system values allow monitoring of the controller system.
• Controller start
• Sensor error inputs
• Sensor error CAN
• Sensor error DL
• Network error CAN
• Network error DL
Controller start generates a 20 second pulse 40 seconds after the device is switched on or reset,
and is used for monitoring the controller starts (e.g. after power failures) in the datalogging feature.
The interval time in datalogging should be set to 10 seconds for these starts.
The sensor errors and network errors are global digital values (No/Yes) which are not connected to
the error status of a specific sensor or network input.
If any one of the sensors or network inputs has an error, the status of the corresponding group
changes from No to Yes.
• Second (seconds of the current time)
• Minute (minutes of the current time)
• Hour (hour of the current time)
• Year (without the century)
• Day of the week (starting with Monday)
• Summertime (digital value OFF/ON)
The pulse values generate a single pulse per time unit.
Sun system values
• Sunrise (time)
• Sunset (time)
• Minutes until sunrise (on the same day, does not go beyond midnight)
• Minutes since sunrise
• Minutes until sunset
• Minutes since sunset (on the same day, does not go beyond midnight)
• Solar altitude (see Shading function)
• Direction of the sun (see Shading function)
• Solar altitude > 0° (digital value ON/OFF)
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