Re: Open datasocket connection error 42
I'm using the "Open Datasocket Connection" to connect to a shared variable hosted on the remote computer. By the way, this has worked in the past but I had to re-install Windows OS and LabVIEW on the...
View ArticleRe: get date time string in RT
I also recommended SNTP, and not doing it yourself. The nice thing about SNTP is that it's handling the time syncronisation problem at the core. It adjusts CPU speed, and you'll never come close to...
View ArticleRe: Get VI ref for LV executable set to allow multiple instances
Well, I'm nearly there. WIth further research I've found an example project that demonstrates one executable attaining an application reference to another executable. Now to see if I can use that...
View ArticleRe: Create VI that multiplexes four inputs to a single output in a time...
I guess my only real question is, how do I get two or more inputs to one output? The two ways I know: Merge - But for some reason, it only takes the top connection. The bottum signal never gets passed...
View ArticleRe: Relay and DAQ for switching a DC Motor
Sorry Raven. I mean no disrespect. But there has to be something supplying power to the motor. If it is a power supply, my suggestion might work. If not, so be it. I don't know the whole situation...
View ArticleRe: Get VI ref for LV executable set to allow multiple instances
Can you post the example or its location if the Example Finder would locate it? and, do you mean "Short Name: Srvr.TCPActive"? That's one I've never played with before.
View ArticleRe: Relay and DAQ for switching a DC Motor
The motor is being powered by rectified power supply of 100V.
View ArticleRe: Relay and DAQ for switching a DC Motor
True. Usually when I hear of 120V, I'm thinking of AC power that is just directly powered from the lines and you need a basic contactor to connect and disconnect the motor. For DC motors, there has...
View ArticleRe: Relay and DAQ for switching a DC Motor
If we're to use a contactor with relay, what should be its rating and specifications?
View ArticleRe: Get VI ref for LV executable set to allow multiple instances
Thoric wrote:I've read in another thread that you point to the exe in the machine name input.Incorrect, as you've seen. The machine name input is just that. Since it's the same machine, you can use...
View ArticleRe: Relay and DAQ for switching a DC Motor
Does it mean we cannot use contactors for switching a dc motor? Also this is an institutional level project for building a water pumping system.
View ArticleRe: get date time string in RT
Hi jatinpatel. Have you accounted for timezones? RT usually uses UTC, the PC is usually local time. Matt
View ArticleRe: Relay and DAQ for switching a DC Motor
You can use a contactor for a DC motor. Look at something like this. SC-E04G-24VDC But I still recommend talking to an electrical engineer familar with this stuff.
View ArticleWhy does write datalog sometimes take up to 20 seconds to complete?
I have been using this vi for a number of years with no problem. I recently upgraded to LV 2013 and added some functions to the code but haven't changed the write datalog function. Basically when I...
View ArticleRe: CIN and address
Should be the same when config the dll.Both want a int pointer for input.Don't know if LabVIEW like the second one or not. Different when use the input:in the first case, b is a pointer; *b is the...
View ArticleRe: control 8 channels, with microsecond precision, outputs only
Hey, If each row of data we're sending is 8 samples, and we can hold 2047 samples, then we can probably send about 255 rows before we run out of buffer space. One way we can get around this limit would...
View ArticleRe: Relay and DAQ for switching a DC Motor
Most DAQ cards are only capable of supplying a few mA of current. in your case, the USB-6008 can supply 5mA. This is not enough current on it's own to power a coil on a relay of the size you need....
View ArticleRe: Create VI that multiplexes four inputs to a single output in a time...
The case structure is the way you want to go. Instead of going by time, your subVI should just keep track of which one it sent out first. Use an Uninitialized Shift Register to keep track of which...
View ArticleRe: get date time string in RT
Good point Matt. Both issues have to be addressed, though.
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