Input Description

EN   BOOL \   (enable \ block)

In order to enable the Function Block processing, input EN has to be continuously set to TRUE. The block is not processed if input EN = FALSE.

When calling the block the first time, the inputs are checked for validity and plausibility. If this is not the case, processing is aborted and corresponding error is displayed at output ERR/ERNO.

YEAR   INT \   (year)

Range of values: from 2000 to 6000.

MON   INT \   (month)

Range of values: from 1 to 12.

DAY   INT \   (day)

Range of values: from 1 to 31.

HOUR   INT \   (hour)

Range of values: from 0 to 24.

MINUTE   INT \   (minute)

Range of values: from 0 to 59.

SEC   INT \   (second)

Range of values: from 0 to 59.

TIMEZONE   LREAL \   (timezone)

Observer time zone (negative west of Greenwich) in hours and parts of hours.

Range of values: from -12 to 12.

DELTA_TIME   LREAL \   (ΔT)

ΔT = Terrestrial Time (TT) - Universal Time (UT) [seconds].

Difference between the earth rotation time and the terrestrial time. It is derived from observation only and it is reported in this bulletin, where _T = 32.184 + (TAI-UTC) + _UT1.

LATITUDE   LREAL \   (latitude)

Observer latitude (negative south of equator) in degrees.

Range of values: from -90 to 90.

LONGITUDE   LREAL \   (longitude)

Observer longitude (negative west of Greenwich) in degrees.

Range of values: from -180 to 180.

ALTITUDE   LREAL \   (altitude)

Observer elevation.

Range of values: -5000 to 5000

PRESSURE   LREAL \   (pressure)

Local pressure in millibars.

Range of values: from 0 to 5000.

TEMPERATURE   LREAL \   (temperature)

Local temperature in degrees Celsius.

Range of values: from -273 to 6000.

ATMOS_REFRACTION   LREAL \   (atmosphere \ refraction)

Atmospheric refraction at sunrise and sunset in degrees.

Range of values: from -5 to 5. Typical: 0.5667