DTL clamp

Any DTL value being read from or poked to the PLC that has a year field less than the minimum or greater than the maximum year results in the date and time being clamped as follows:

For Canonical VT_BSTR:

Year < 1970 = 1970-01-01-00:00:00.000000000

Year > 2554 = 2554-12-31-23:59:59.999999999

For Canonical VT_DATE:

Year < 1970 = 1970-01-01-00:00:00

Year > 2554 = 2554-12-31-23:59:59

If any other field, month, day, hour, min, second, or nanosecond is less than the minimum or greater than the maximum, it results in a rejected poke or read. Also, an uncertain quality results for subscribed tags.

This applies to the syntax of all DTL names.