I have ibdev error when I use secondary address(I need use it). I use MSVS6.0 and your example, it works with keithley, but not with my device. When I work with my device by LabVIEW and for addressing use "1+1"(for example) it works. But I am getting mistake when I try to initialise device in VStudio, without secondary address it does not understand my command.
Please help me.