Use of K8056 under Labview 8

Hello,
I try to drive a K8056 relay card under labview 8 via serial (rs232) connexion.
The test software given on your website is running well, but I didn’t manage to drive the card with labview. I’m using the VISA serial VIs. I think there is a problem of syntax for the instructions or maybe i’m wrong with the checksum.

I’m trying to toggle the first relay :
chr$(13)
1
T
1
255-(13+49+84+49)+1=61

Here are the bytes i send. I’m not sure for the separation and end caracters, so i tried \ and \n.
The problem is that if these bytes are right or wrong. There are too many possibilities.

Thanks for your help !!

Hello
Can you drive k8056 under labview!
Please tell me how.

Stefan