Hi Xiwang,
The TRNSYS interface has been tested on Windows 32 bit but you should be
able to use the interface on Win64 bit, if you use the 64 bit version of the
BCVTB/TRNSYS types.
You might want to contact your TRNSYS distributor and see whether they
could provide you with TYPES compiled for Windows 64bit.
Best,
Thierry