We urgently need to control this NHQ205M unit through computer interface through the given RS232 port. But the corresponding manual has misplaced some where and now we dont know the compand instructions codes for its control?

We have a manual about NHQ HV supplies containing the RS232 commands in our website. Please look in www.fastcomtec.com under support for manuals, it is near the bottom of that page. The direct link is

www.fastcomtec.com/ftp/manuals/nhqdoc.zip

We offer a software for controlling the NHQ supplies, and a DLL interface
with examples for LabVIEW. See

www.fastcomtec.com/fwww/datashee/hv/dllhvc.pdf