I am having difficulty understanding your question. Why is the following not acceptable?

IF condition1 THEN
    {logic 1}
ELSIF condition2 THEN
    {logic 2}
ELSE
    {logic 3}
END_IF;

Or even..

IF condition1 THEN
    {call FC1}
ELSIF condition2 THEN
    {call FC2}
ELSE
    {call FC3}
END_IF;

What I do not recommend..

IF condition1 THEN
    goto L001;  // bad!
    CN1: ;
ELSIF condition2 THEN
    goto L002;  // bad!
    CN2: ;
ELSE
    goto L003;  // bad!
    CN3: ;
END_IF;

return;

L001: {logic 1}
goto CN1;  // bad!

L001: {logic 2}
goto CN2;  // bad!

L001: {logic 3}
goto CN3;  // bad!

“ELSE” is not required and can be omitted.

IF condition1 THEN
    {logic 1}
ELSIF condition2 THEN
    {logic 2}
ELSIF condition3 THEN
    {logic 3}
END_IF;

Which means that if no condition is met no code will be executed.

BTW, this is unclear to me:

Avinash Banda wrote:

 

If the condition1 satisfies then logic 1 should execute, after logic 1 execution it should resume back the previous execution.

Which means where?

Does it mean that in case “condition1” is fulfilled “logic1” should be executed twice? If so, then:

If condition1 then
logic1 <- here logic1 is executed for the first time
end_if
some lines of code
------
-----
-----
logic1 <- here for the second

To not repeat writing “logic1” twice, enclose it into a FC/FB.