I Googled your issue and found several answers. Here's a thread that may work:

www.robotshop.com/forum/can-t-connect-ssc-32-to-usb-t8509

The Problem is not the hardware, when I connect the SSC32 to a local comport it works fine with Script-commands. ComOpen, ComWrite ..... will work.

The Problem is the SSC32-Control in ARC witch will not connect to a local comport.

I think it is a Bug in the SSC32-Control of ARC.

So it sounds like you want to control the SSC32 with ARC through a port directly from your computer and not a port off the USB? I pretty sure you can not do that with natively with ARC.

Dave is right the ARC control needs an ezb v4

Yes, with EZ-Robot controller it works fine, but in the Settings of the SSC32-Control you can selct a local Port.
The Comort will not be saved with the Project and it will not work.

The software still requires a connection to the ezb for the software to work. This is because the framework for moving servos and controlling I/o is dependent on an ezb connection.

Hello DJ Sures,

your a right, with an active connection to the EZ-B V4 it works fine.

There ist another Bug, I had to edit the Projectfile with the Editor,
the comport will not be saved.

" <SSC32>
<Paused>false</Paused>
<IsEZB>false</IsEZB>
<baud>38400</baud>
<port>COM9</port>
<usMax>2000</usMax>
<usMin>1000</usMin>
</SSC32>
"

Thansks to all for your help!
Hansi

I'll definitely have the saved com port looked into, thanks!