SUB_LTOD_LTIME

Type

Function

Description

Subtracts the duration (LTIME) connected to IN2 from the point in time (LTIME_OF_DAY) connected to IN1 and delivers a point in time (LTIME_OF_DAY) as result.

Note
This function is not extendable, no further inputs can be added.

Notes

When the subtraction result exceeds the permissible range of the output value, an overflow occurs.
When the result of the calculation exceeds the permissible range of the LTIME_OF_DAY output value (00:00:00.0 to 23:59:59.999999999), a value less than 0 or greater or equal 24h is interpreted and displayed as time value in nanoseconds. There is no runtime error and no entry output in the MESSAGES window.
Example in ST:
out := SUB_LTOD_LTIME(LTOD#13:00:00 , LTIME#1d1h); (* results in LTOD#-43200000000000 ns *)
The function provides implicit data type conversion at its input and output parameters according to the rules defined by the IEC 61131 standard.

Parameters

Inputs

IN1

IN2

Output

Out

Error behavior

Additional information

EN/ENO behavior