DATA #800000200<byte1><byte2>...<byte200>

[kajo97]

Can I ask, how this SCPI command is working? Because I can't find any example of it.

Thank you in advance.

[RolfO · Accepted solution]

Write "Agilent SCPI" into google. First matching link: 
https://www.keysight.com/main/editorial.jspx?cc=NO&lc=eng&ckey=1688330&id=1688330

Keysight is the new name for Agilent.

Example implementation in LabVIEW for GPIB instrument:

[kajo97]

Many thanks. And can You recommend me when I could find what does this error code means? 

Thank you in advance. 

[RolfO]

Right-click on the numeric indicator and select "Explain Error".
Google the number (Remove -)