REFERENCE TO

2021-11-02T06:52:37.155000Z

You could also use VAR_IN_OUT and not do VAR_INPUT and then decalre a reference

https://help.codesys.com/webapp/_cds_vartypes_var_in_out;product=codesys;version=3.5.17.0

Best regards,
Marcel

REFERENCE TO

2021-10-31T10:06:56.304000Z

so easy ;)
Thank You !!!!

REFERENCE TO

2021-10-31T10:03:34.870000Z

RefSupport REF= RefSupport1;

see https://help.codesys.com/webapp/_cds_ref_assignment;product=codesys;version=3.5.17.0

REFERENCE TO

2021-10-31T09:58:37.794000Z

Hello,

I have a FB with 2 REFERENCE TO FB as input parameters.
In the FB, i want to work with either the first or the second Reference depending on a variable (NumSupport)
But when I try to affect the RefSupport:=RefSupport1, I get an exception.
Does anyone know how to deal with this problem ? What is correct way to work ?

Thank you

FUNCTION_BLOCK FB_Manip
VAR_INPUT
RefSupport1 : REFERENCE TO FB_Support;
RefSupport2 : REFERENCE TO FB_Support;
END_VAR
VAR
RefSupport : REFERENCE TO FB_Support;
NumSupport: INT:=1;
END_VAR

IF NumSupport=1 THEN
RefSupport:=RefSupport1;
ELSE
RefSupport:=RefSupport2;
END_IF

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