If you mean the Switch command icon, then not exactly. That said, you can create a set of constants with appropriate names and unique integer values, and then use those throughout your project. These could then be used in a Switch statement and would be make the code a lot more readable and easy ...

@mnfisher I'm not sure of the syntax for c so could you help me with your example:
void (*fn)(MX_UINT32);
fn = (void*)FCL_MACRO_TABLE[FCL_I % 2];
fn(FCL_I);

I think this is what I need. I simply want to pick a macro from my table and run it. I'm using FC9
My table calling macros by one letter only ...

I can call you the macro but I have to add FCM_ at the beginning. My macro names are in the array table so I want to collect that macro name and call it. I'm not sure how to concatenate the FCM_ to the called name.
Thoughts?

Thanks. I'm now clarified...

I got the system running with the switch. The code is bulky with quite a few decisions.. I figured matching the command with a table list would make the code easier and more efficient.

I would like to call a macro based on a table entry. So if I select table_string[7] which indicates the value of "macro1" for instance, I would like to call macro1.
Currently, calling a macro is singular and not based on a variable finding. Do I need C for this? I can't simulate C in my simulator ...

The attached helped but - - I can get the if block to work but my switch simply falls through

Is it possible to use a string for the switch function?

Thought:
Such a simple idea, but it would be nice to incorporate either automatic or manual file backups.

Did we resolve this?

Maybe an easier method would be to simply connect a dual optical isolator via resistor directly to the micro controller transformer on the secondary ac side. Your open collector outputs will switch at every zero crossing.
That signal is connected to the hardware interrupt which services the routine ...