Logix5000/Designer Call AOI from Structured Text Routine

AMarks95 · Mar 25, 2022

How do I call an AOI from an ST routine?

I have tags made for the AOIs in my Controller Tags group, but how do I call the AOI in a Structured Text routine so that the logic is executed on each one.

For example, I have an AOI called "SCP" and an instance called "SCP_test". Do I call it like so?
SCP(SCP_test, SCP_test.Input, SCP_test.In_MIN, SCP_test.In_MAX, SCP_test.Out_MIN, SCP_test.Out_MAX, SCP_test.Output);

JeremyM · Mar 25, 2022

Code:

AO_Name(AO_Instance, Required param1, Required param2, ...);

Optional params can (and should) be set prior to the call:

Code:

AO_Instance.OptionalParam1 := someValue;
AO_Instance.OptionalParam2 := {some expression};
AO_Name(AO_Instance, RequiredParam1, RequiredParam2, ...);

And finally, calling multiple instances:

Code:

AO_Instance1.OptionalParam1 := someValue;
AO_Instance1.OptionalParam2 := {some expression};
AO_Name(AO_Instance1, RequiredParam1, RequiredParam2, ...);

AO_Instance2.OptionalParam1 := someValue;
AO_Instance2.OptionalParam2 := {some expression};
AO_Name(AO_Instance2, RequiredParam1, RequiredParam2, ...);

AO_Instance3.OptionalParam1 := someValue;
AO_Instance3.OptionalParam2 := {some expression};
AO_Name(AO_Instance3, RequiredParam1, RequiredParam2, ...);

Logix5000/Designer Call AOI from Structured Text Routine

AMarks95

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JeremyM

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