Hello to everyone!
This was my first attempt at connecting an external device to LabView: I watched a tutorial and tried to follow.
I tried to connect the Hamamatsu C9525 HV source to a laptop (Windows7, 32b) using the usb port.
First I tried to install the provided software, written in VB6, and it did not work: I had to download from the internet two .ocx files:
sysinfo.ocx and mscomm32.ocx. After that it worked.
Then I tried to set up NI MAX in order to establish communication between LabView and Hamamatsu :
serial¶llel/COM3
The driver for the USB Serial port (COM3) had already been successfully installed by Windows
when I was trying to configure it in ni-max.
Having completed the ni-max dialogue I opened an axample in labview: Hamamatsu C9525 output DC volts.vi
From VISA resource name I selected COM3_hamamatsuHV as I had named it and an error appeared :
error- 1073807246 occured at visa open... Possible reason: Hex 0xBFFF0072 The resource is valid but visa cannot currently access it.
Went back to NI-max ,selected port, port settings, Validate => Could not open a visa session to "ASRL3::INSTR".visa error code 0xBFFF0072 .The resource is valid but visa cannot currently access it.
On the test panel: is port connected/ error: hex: 0xbfff001d The specified attribute is not defined or supported by the referenced resource.
I looked around the forum for these problems, disabled the "turn off device" from "power management " and the rest but it did not work.
Right now nothing works on that port: not even the originally working Hamamatsu provided program: it gives the same communication error :
COM port # is unacquireble and "COM port # is not set up"
I think I completely messed up the NI-max port setup (in the pdf it said the driver for the device should not be installed but Windows had already done it).
So: how do I undo/delete the ni-max configuration?
what do I need to do in order to properly set up the communication between Labview and hamamatsu ?
Please help, I am lost.