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Cross level indicates whether the optional field exists [message #1854191]

Fri, 05 August 2022 09:56

lou ban

Messages: 17
Registered: June 2020

Junior Member

Excuse everyone, there is a problem bothering me

type union A
{
    B    b,
    C    c
}

type record B
{
    B8_T    iei,
    D       b_d
}

type record C
{
    B8_T    iei,
    D       c_d
}

type record D
{
    B8_T    d_f1,
    O4_T    d_f2    optional
}

in type A
if iei = '00000000'B, is B
if iei = '00000001'B, is C

in type D
if it is type B, the d_f2 is PRESENCE
if it is type C, the d_f2 is not PRESENCE

how do I configure whether d_f2 exists or not??

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