E4418b, simple ctrl via RS232

Hi
can anyone provide a simple working example of RS232 setup parameters, and a command like *IDN?.
I want to verify the communication setup, but it's not working correctly.
The RX symbol is blinking on the E4418B whenever i send a cmd, but it's not reacting otherwise.
If i send the *TST? cmd, i would expect it to run the selftest.
When i send a MEAS1? cmd, do i have to do anything further to get the result ? like read some output buffer, or is the result send directly to my terninal program ?
br
Nikolaj

NikolajEgeskovOstergaard wrote:
is must be something with the comm setup.
I changed from "putty" to "termite" terminal and setup in same way.
However now it's working like i expected.
There must be something "hidden" in the "putty" tool
Hidden?
More like you didn't configure Putty properly.

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Attachments:
visa.png ‏42 KB

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Message Edité par chilly charly le 10-21-2005 06:21 AM
Chilly Charly (aka CC)
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Attachments:
Water bath.png ‏4 KB
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Comment envoyé une donnée via rs232 avec labview

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Here is some help for you
MAS345
data format: 7n2 at 600 baud (7 bits, no parity, 2 stop bits).
Control lines:
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Data string format:
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   <units>: four bytes with the units: mV, A, kOhm, nF ...
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Hey Sahil,
Thanks for posting on the forums. Hopefully this was the thread you were referring to in the Engineer Awesome ni.com/community group discussion. Sorry that you did not receive any feedback from your issue, that is fairly rare.
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If I had to guess, I would think that you are not sending commands/termination characters to your instrument that it is expecting.
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Fluke PM6304 controlled with LabView via RS232

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Okay, here goes. Once upon a time there was just serial and gpib. Each used completely different hardware,protocols, etc. and there were separate drivers for each. Years ago, a new instrument type was introduced. Based on a VME backplane, these were instruments on a card called VXI (VME with instrument extensions). So, a whole new low level driver was required. The makers of VXI, realizing that the first VXI instruments were the same as their GPIB instruments without a display or power supply, thought that it would be nice if the software that had been developed for the GPIB instruments could also be used for the VXI version. Several vendors, including NI, came up with something called VISA (Virtual Instrument Software Architecture). This was an API that united GPIB and VXI. If you wrote an instrument driver with VISA Writes and VISA Reads, it would work with either type of instrument. The VISA driver itself would determine the actual type of bus and handle all of the low level details. One of the goals of all these vendors was to also make it easy for users to change from GPIB to VXI instruments. While this didn't really happen, the idea of VISA caught on and became very popular and sort of a standard in many places. Eventually, other common forms of instrument busses were added to VISA. Among those are serial, ethernet, usb, pxi. All of the instrument drivers written by NI now use VISA.
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flpm6304.llb ‏141 KB

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How do you get LabVIEW to talk to and configure and HP 34970A datalogger via RS232 connection?
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E4418b, simple ctrl via RS232

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