Hello all, I'm dealing with three ancient data loggers, Microlink 4000, connected by GPIB and interfacing with my PC via GPIB-USB-HS. There are no drivers for the data loggers... Their primary addresses in MAX are displayed and I'm able to send commands but I'm unsure what to do next to begin reading the data logged by each module. I suspect I'm simply not accessing each module's secondary address or using the wrong commands. I have scoured the web for 488.1 manuals or commands but they're not working in VISA interactive control. i.e. (Hex 0xBFFF0015) Read error occurs whenever I'm querying the devices... System specification: 3 x 4301 power units 3 x 4300 control units 1 x 4010 timebase unit 34 x 4030 (12 Bit A-D converters) I apologise if I've not attached enough information still very new to LabVIEW and MAX. Please advise! Many thanks, JChan

Instrument Control (GPIB, Serial, VISA, IVI)

GPIB instrument legacy Microlink 4000 using GPIB-USB-HS

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No, those are not commands when you are using the obj library. They are basically the same thing as function calls to a dll. The actual commands are hidden in the obj. You would need it's source code.

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Hello,

I'm still very stuck on how to even send commands over to these instruments via GPIB-USB-HS. I've been using MAX to attempt to communicate by the VISA testing panel and Interactive Control.

I'm unsure of what to do at the moment, can you please lend me a hand?

Please find attached the Programming Manual.