Need help with AdsVariable

[ideasoft-bz]

Hello,

My C++ knowledge is not good enough to decode AdsVariable. In the example

static void readByNameExample(std::ostream& out, const AdsDevice& route)
{
AdsVariable<uint8_t> readVar {route, ".StevPalet"};

out << __FUNCTION__ << "():\n";
for (size_t i = 0; i < 8; ++i) {
    out << "ADS read " << std::hex << (uint32_t)readVar << '\n';
}

}

This example works, but how do I decode return data if my request is for variable type of bool, int, real?

Thank you very much for help

Regards
Bojan

[Frants1987]

Hello Bojan,
it should look something like this:

• AdsVariable<bool> readVarBool {route, ".myBool"}; for type BOOL
• AdsVariable<int16_t> readVarInt {route, ".myInt"}; for type INT
• AdsVariable<int32_t> readVarDInt {route, ".myDInt"}; for type DINT etc.
• AdsVariable<float> readVarReal {route, ".myReal"}; for type REAL

Just make sure the size of the variables is the same in TwinCAT and on your platform. You can find more information on type sizes here.
You can assign the value of the variable using the assignement operator:
bool value = readVarBool;
Hope I could help you.

[ideasoft-bz]

Super, thank you very much.

Regards Boajn