VISA XOP ReadBinary DataFormat

Dear Igor Community,
currently I'm working on a data acquisition program, which reads from a Keyside 2985 electromter using the VISA XOP. To accomplish a high data transfer rate, I would like to read the data in binary format with the VISAReadBinaryWave operation. But unfortunately, in my case, the operation does not work as expected. Instead of the measured values, the VISAReadBinaryWave operation fills the wave with random numbers. Additionally, I get a the following VISA library error:

"(3fff0006) The number of bytes transferred is equal to the requested input count. More data might be available."

My code works fine if I set the Instrument to ASCII output and recieve the dataset via the VISAReadWave operation. I have also disabled terminator character detection as suggested in the VISA XOP manual as you can see in the reduced example below.

Is it possible, that the dataformat of the Instrument is not compatible?

The instruments manual gives the following information:

"IEEE-754 single precision format, set by :FORMat[:DATA] REAL,32
4-byte definite length block data, #<number of digits for byte length><byte length><byte>...<byte><terminator>. For example, two data elements are sent by a data block which consists of a header (3 bytes, #18), two 4-byte data, and a terminator (1 byte). A 4-byte data is used for each data element. Each element consists of a fraction (bits 0 (LSB) to 22), exponent (bits 23 to 30), and sign (bit 31).
Order of bytes set by :FORMat:BORDer NORMal (default): byte 1 to 4
Order of bytes set by :FORMat:BORDer SWAPped: byte 4 to 1
NaN indicates “not a number.”
+infinity indicates positive infinity.
-infinity indicates negative infinity.

IEEE-754 double precision format, set by :FORMat[:DATA] REAL,64
8-byte definite length block data, #<number of digits for byte length><byte length><byte>...<byte><terminator>. For example, one data element is sent by a data block which consists of a header (3 bytes, #18), one 8-byte data, and a terminator (1 byte). An 8-byte data is used for each data element. Each element consists of a fraction (bits 0 (LSB) to 51), exponent (bits 52 to 62), and sign (bit 63).
Order of bytes set by :FORMat:BORDer NORMal (default): byte 1 to 8
Order of bytes set by :FORMat:BORDer SWAPped: byte 8 to 1
NaN indicates “not a number.”
+infinity indicates positive infinity.
-infinity indicates negative infinity."

I tested both, single and double precision, I also tried to change the byte-order. But no approach was succesful. I would be very happy, if anybody has an idea what is going wrong, or what else I could try. Thanks in advance.