SUB_LTIME¶

Returns the difference between two long durations.

Note

This feature requires IEC 61131-3 Edition 3. Use --dialect iec61131-3-ed3 to enable it. See Enabling Dialects and Features for details.

Signature¶

     ┌───────────┐
IN1 ─┤           │
     │ SUB_LTIME ├─ OUT
IN2 ─┤           │
     └───────────┘

FUNCTION SUB_LTIME : LTIME
  VAR_INPUT
    IN1 : LTIME;
    IN2 : LTIME;
  END_VAR
END_FUNCTION

The return type is LTIME.

Inputs

Name	Type	Description
`IN1`	`LTIME`	The duration to subtract from.
`IN2`	`LTIME`	The duration to subtract.

Outputs

Name	Type	Description
Return value	`LTIME`	IN1 minus IN2.

Returns IN1 minus IN2, both LTIME durations, in 64-bit milliseconds.

The short form is SUB_TIME. An operand of the short type (TIME where LTIME is expected) is accepted and widened to 64 bits.

Try it

Source

result := SUB_LTIME(LTIME#2h, LTIME#30m);   (* result = LTIME#1h30m *)