You can’t tell if you are “connected” to a device until you actual try to send and receive messages. Or do you think I should get myself another adapter? Message 14 of Is it an NI device or 3rd party? Accepted by topic author Keksbold. Thank you so much for your help!!

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That made the initialize sub VI run.

Did you say that you had it communicating once that way? This seemed to work, but the next error appeared when it tried to reset. After I switched this setting on the device, I was able to set it via RS I really don’t know how to solve this, and am pretty sure that a simple decoupling would not be a good idea.

GPIB interface is selected when the power supply e3648z shipped from the factory. I somehow think it would be a bad idea to just disable all the stuffs and hope fopr the best What would you do?

Solved: Agilent EA – Page 2 – Discussion Forums – National Instruments

Actually I have to admit that I am just using a gender changer. The GPIB interface is selected when the power supply is shipped from the factory. Just as a sanity check. Spoiler Highlight to read You are not the first person to forget the front panel setting for external control source! Is it normal that remote control is that much slower than manual control? If you are actually sending and receiving commands to the power supply, then what you have must be a NULL modem.


Agilent Technologies / Keysight Technologies hpe364xa Power Supply

Thank you very much for the example for setting the default values myself. Message 11 of What kind of USB – serial device are you using? Message 17 of We have a number of laptops using USB to serial converters to talk to meters and power supplies.

After that I had to remove the error queries from the Configure Output and the Configure Current Limit as well, which made these work too.

Highlight execution mode showed me that problem lies in the initialize- Sub VI 3e648a the driver, which expects the ID of the power supply, and instead gets the ID from the adapter or nothing?

Are you saying by “connected” that you are able to send and receive commands when connected to a “built in” comm port of your PC using a labciew like Terra Term or Hyper Terminal, but not able to send and receive commands when using a 3rd party “RS to USB” converter?

Agilent Technologies / Keysight Technologies E3648A

I fear this might not be fast enough for my system. However the close VI and the error query also seemed to have problems, which means that I would have to disable the error query in all of the other sub VIs of the driver One of my other approaches was it, that the interconnected adapter disturbs the IDN – transmission, or even brings in it’s own Labivew.


I guess the labvieq is working fine today.

If it is working and you take the computer end of your cable and transfer it to RS end of your USB comport, change the com port ref and it fail to send and receive the same commands, Then the USB to RS are not compatible with your EA.

So my first fault were the front panel settings, and my second one was a missing NULL modem. Thank you so much for your help!! However I found out that I am obviously able to make labiew connecttion even if I just plug in the converter not linked to the device, so JUST the converter Only one interface can be enabled at a time.

Thank you very much for your help, Keksbold. Or do you think I should get myself another adapter? Message 12 of They both don’t work and as they are quite new, I am pretty sure they are not broken.

There are also default com port settings in the Device Manager of Windows.

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