using Block_FC in stl

If you call an FC using indirect addressing you have to use UC instruction like:

UC FC [MW x]
UC FC [DBW x]
UC FC [DIW x]
UC FC [LW x] this one (LW x) canbe a TEMP variable WORD of the calliing block to store FC number to call.

[code]

FUNCTION FC 1 : VOID
TITLE =
VERSION : 0.1

VAR_INPUT
FC_IN : WORD ;
END_VAR
VAR_TEMP
FC_NO : WORD ;
END_VAR
BEGIN
NETWORK
TITLE =
L #FC_IN;
T #FC_NO;
UC FC [#FC_NO];
END_FUNCTION

[/code]

Dec

PS This example does not pass any parameter to FC. It gets a little tricky if you need to pass also IN/OUT to the FC.

mpas

Thanks for the advice Dec, but what I need is the tricky part.
Yes I need to pass parameters to the called FC. I can understand that I have to take care of version management for not calling the wrong in/outputs. If you or anyone else could point me in the right direction, it would be very much appreciated.

With regards
Michel Pas

To be safe use UC in one rung (network) and do the rest in LAD/STL after you compile STL source.
Don't touch that rung anymore because if you do so, STL editor will go wild on you.