SICK documentation for 'SICK_BCR_CP340'

Hi,

I'm revamping a system that uses CLV4xx readers connected to an S7-300 CPU via a CP340 RS422 module using 3964R.

The interface is implemented using an FB called 'SICK_BCR_340' which I gather was supplied by SICK on an accompanying CD along with manuals, utilities etc.

Unfortunately the CD supplied with newer readers does not contain support for older products, and nor does the website.

Does anybody have a PDF manual that documents the use of this FB?

Thanks in Advance,
Roger.