Solaris com port

i want to talk to solaris machine's COM port through
java which talks 64-bit and the sun machine talks
32-bit, so i need a library that convert from 64 to
32-bit.
If any one can help i'll appreaciate it.This doesn't make a lot of sense. If by "COM" port you mean a tty port, then it doesn't talk 32-bit - it talks anywhere between 5 and 11 bits depending on how you've configured it.
Try explaining much more clearly what you are trying to do.

Similar Messages

Write among COM ports in the same PC without cables

How can I write to the memory address(es) of a serial COM port? I would like to send data from one serial COM port to another in a manner similar to the that of the 'Simple Data Client' and 'Simple Data Server' vi examples. This must sound strange since this is exactly what a null modem cable will do, externally. I would like to eliminate the cable connection between COM ports that exsit in the same PC and communicate between them, internal to the PC, somehow.
Currently, I am using a LabVIEW vi to read a serial message on COM1, translate it, send the trsanslation out on COM2, so that a separate windows program (no .DLLs to interface with LabVIEW) can read the message on COM 3. COM 2 and COM 3 are connected by a null-modem cable. This requires three COM ports, and two serial cables. I realize that I can use a physical loop-back jumper on COM2, for instance, where I send and read the translated message on COM2, but I still wonder if there is a method for doing this in memory, or something. Is there a way to accomplish the same objective with one cable (into COM1), no loop-back jumpers, and only two serial ports? In summary, I want to read on COM 1, translate in LabVIEW, then write directly to another COM port, internally, without using a serial cable. Can the 'IN PORT' or 'OUT PORT' vi's apply here? Are these tools only for parallel ports?
Hope this is not too confusing.... It seems like I am always trying to do something with LabVIEW that was not meant to be done....
Thanks.

Thank you. If I pay the price they ask, this looks like it will create and share virtual COM ports - exactly what I need. However, I would really like to find a way to do this in LabVIEW, such that I do not have to make my application dependent on another piece of third party software. The 'Simple Data Client.vi' and 'Simple Data Server.vi', included in the shipset examples, seem to do this for TCP/ IP ports. I wonder why the COM ports cannot be addressed at the memory level, in a similar manner???

Can two users share a COM port?

I have a system services Labview executable that opens a VISA session on a COM port.
But I also have a User Interface VI that needs to communicate with the device on same COM port.
Is this possible? Can I use a Shared Variable to keep the VISA Resource name and have multiple users (one at a time) communicate with the device?

LabVIEW semaphores and all other LabVIEW objects like queues, notifiers, events, etc are not only process local objects only but even application context local only. While this makes no difference for built applications it is important inside the development environment as each LabVIEW project lives in its own application context (and tools started from the Tools menu run in yet another context). To do what you want to do, you need to implement some form of interapplication communication as Mark already mentioned. Or you can access named OS semaphores by calling OS APIs.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

How can I write to multiple daisy-chained network serial addresses through a single COM port?

I have a VI to write to 3 PI Mercury motor controllers using daisy chained RS232 connected via a Prolific USB-to-Serial adapter. I know that it is possible to talk to the individual controllers because the PI terminal that I have recognises the addresses of multiple controllers and designates them Device 1,2,3. The VISA resource name when configuring the port just comes up as COM5 most of time, with seemingly no way to specify an address on that COM port. Occasionally the VISA resource is ASRL5::INSTR and as this is disconnected and re-connected, this address moves up a number (e.g ASRL7::INSTR). Can anybody tell me how I can configure my serial communication to allow me to individually communicate with the different devices through a single COM port?

What does the manual say about addressing? RS-232 is not multidrop, the resource name is correct, and there is no additional configuration needed. There would have be a specific write in order to address a certain controller.

How to use shared variables to address multiple Watlow controllers on the same COM port

Hello,
I am trying to use LabVIEW 2010 to control 4 Watlow temperature controllers on one COM port. 3 are Model 96 and 1 is an EZ zone controller. Each controller has a unique modbus address, and I am trying to read from and write to individual registers (such as closed loop setpoint) using shared variables. I am getting return data when reading (although the data appears to be invalid), but am unable to change the value in the register by writing. How can I be sure that the Modbus server is sending commands to the correct controller?
Chuck
Solved!
Go to Solution.

Peter,
Thanks for the reply. I have actually solved that problem. I realized that the Modbus server address has to be the same as the controller's Modbus address.
I have, however, run into another problem. Perhaps you could help me with that. I have a system with 4 Watlow controllers, 3 are series 96 controllers, one is PID only and 2 are ramping. The 4th controller is an EZ zone. I am using RS485 for communications and the controllers are all wired in parallel for communications and power.
I have set up 2 Modbus servers for 2 of the controllers.
This is the first I have ever worked with Modbus based communications. I have successfully programmed using the Modbus read/write VIs, and am wanting to move to shared variables. My questions right now revolve around addressing, Modbus I/O servers and COM ports. Specifically, at this point, I know the addresses need to match up between the server and the slave device (Watlow controller in my case), how many servers can I create and use on one COM port? If the number is limited, is there a way I can specify an address that I want the server to talk to? Will the broadcast mode work to request data values from the controllers?
I'd appreciate any information you can help me with, or if you could point me to some sort of concise 'How-To' for Modbus communication.
Thanks.
Chuck

GPS Error on F3507g & Windows 7 "The GPS NMEA COM Port is not available" x200

I have an X200 with a WWAN Card 43R153 (Ericsson F3507g) running Window 7.
The WWAN reliably connects to Vodafone but I can't get the GPS to work.
Device manager shows this port Enabled:-
Ericsson E3507G Mobile Broadband MiniCard GPS Port (Com8)
Driver Invogps.sys from Ericsson AB, Version 1.0.0.28 29/09/2008.
Thinkvantage GPS version 2.50 is also installed and Lenovo System Update says everything is up to date.
When I "Turn on GPS" or run 'Lenovs GPS" I get this message:-
The GPS NMEA COM port is not available. You need to check the following things.
- Another GPS application is using the COM port.
- COM ports is disabled. You can enable the COM port in the Device Manager.
Location and Other Sensors shows nothing installed.
I've tried deleting all the drivers and reinstalling but not luck.
Has anyone else had the same problem and found a solution. I can't think of anything else to try.
ThinkPad X200 7459-1P0

If you are running a Windows 7 Weather Gadget on your desktop, try shutting it down entirely and see if that changes your GPS "in use" problem.
Cheers,
Bill
I don't work for Lenovo

HyperTerminal sees a COM port but VISA does not

It should not be possible that HyperTerminal sees a COM port but VISA does not. Does anyone know why or have any ideas?
Here's some more info: I wrote a LabView (LV) program and deployed it (via the Application Builder) to some of our production department's PCs (some Windows XP and some Windows 7). We use it to set up products we design and manufacture through our device's USB serial port. The USB port is actually a virtual COM port (VCP) - a USB to Serial converter or "bridge". We have a custom driver for our device and since each device's USB bridge chip is programmed with a different serial number, every time we connect a new device to the PC the installer runs and assigns a new COM port number. This is so our customers can use multiple devices on a PC. Fine. On one of our production PC's we were close to COM900 ports (HyperTerminal sees only up to COM256) when suddenly Win7 would not allow any more. We were able to uninstall orphaned (non-present) COM ports from DeviceManager ("DM") by starting it from a command console (DOS window) with a special command-line switch, "set devmgr_show_nonpresent_devices=1" then "start devmgmt.msc" (I have this in a batch file). In DM View menu you can "Show hidden devices" and uninstall them as if they were connected. I've also tried uninstalling them the normal way when the device was actually connected. Either way, sometimes, not always, depending on the COM port number, after reusing that port number by installing a new device which picks up that old, freed-up number, LV VISA doesn't see it. In other words, when "Refresh" is clicked in the COM port VISA list box, any new devices installed should be and normally are seen. (Refresh is not needed if the application is started after the device's driver is installed. It is only need if the LV application is open with the new device is added.) However, HyperTerminal does see it and lists it in the Properties screen, the "Connect using..." list box. And the port works with HyperTerminal. (Of course we've tried rebooting after uninstalling and/or reinstalling the device, with the same results.)
When I've spoken to the NI Applications Engineers in the past about serial port issues (not about this problem) they have confirmed that if HyperTerminal can see the port then NI VISA should also see it. This is crazy. I am posting this in hope that someone can shed some light on this problem.
Thank you. -Ed

Good catch. Yes, we're using the Silicon Labs CP2102 and have created a "custom driver" installation package. Our new PCBs have a factory-programmed chip, so the PC reuses that COM port (COM3 on that PC). The problem is when we we re-program the CP2102 (setIDs exe) with our PID, and device strings (including the S/N), the PC runs our installer and assigns the next COM port number. I was hoping that maybe it would go up to 64K or something! Anyway, it surpassed COM256 but we ran into this problem when almost up to COM900.)
There is a registry entry for each SN device, which shows the assigned port. If we delete the key with regedit, the COM port database (don't know the file name) still has the port number. That's where Device Manager comes in. It seems to allow us to manually delete the ports, but it would take quite a while to delete 900. (I was trying to make a batch file for DevCon, but couldn't get it to see the HW ID of the devices in need of deletion.) So we tried manually deleting a few. After doing that Device Manager shows that Windows (and HyperTerminal) can reuse the port number when a new device (new SN) is installed, but, as you know from this post, VISA cannot see unless I manually add it in MAX.
I can't see how it has anything to do with the Silicon Labs driver. I might have to delete ALL of MY devices, then uninstall the driver files, reboot, then reinstall, as you suggested with the SiLabs driver. However, I don't see how VISA will now see these changes. VISA must have it's own database. That's what I thought deleting the ports in MAX would clear out, like a fresh install, but apparently not.
I've been through Silicon Labs' tech support on other issues and they've been able to help on some. I could run this by them.
BTW, have you noticed that Silicon Labs' chip and driver, while faster than NI's own "bridge" or serial-USB converter (I returned it because at $100 it's performance was worse than a $20 converter you can buy in Staples), is substantially slower than a real serial port? For example, our device can transmit 250 readings per second (a 12 byte string). A real serial port used with my LabView program can keep up, i.e.., graph & tabulate at that rate, but with a VCP we only get about 70 RPS. Same code. Can't figure this one out. They say the've tested the driver to 900 KB claimed. We're using 115KB here. Anyway, the VCP driver makes it look like a COM port which LV thinks it is. Why is it slower than a real port when the USB should be able to work almost 10 times faster than I'm using it (up to 1024 bytes per mSec per the full-speed USB spec, which SiLabs claims they verified)?
Anyway, I appreciate your help. Thanks! -Ed

Problem removing bluetooth stack / hidden devices / COM ports not released

Hi
Having problem completely removing Toshiba Bluetooth stack / hidden devices / com ports not released
I uninstalled Toshiba BT s/w...
But:
1) Toshiba BT hidden devices still appear and I can not remove (get error)
2) COM ports occupied by Toshiba BT not released (so they cannot be used by another BT stack) and still appear in registry
ex: friendly name Toshiba BT Port (COM4) still in registry
3) These unreleased com ports do NOT appear in device manager
Thanks

It seems that you still have some configurations which were not removed during the uninstallation.
This means that the resources can not be release, because those are still necessary in case of a
new installation of the stack.
The first I would try is the following:
- Install the latest Toshiba Bluetooth stack.
- Uninstall it. Ensure that you answer all questions with "yes" ! This means also the one which asks if all configurations should be removed.
- Reboot
- Check again

Exception while accessing com port from servlet

I am trying to access communication port from a Servlet using java communications api's.
But Following exception was thrown
Caught java.lang.NullPointerException:name can't be null while loading driver com.sun.comm.Win32Driver
The SecurityManager do not allow that opeartion.
java.security AccessControlException:access denied (java.io.FilePermission c:\j2sdk1.4.1\jre\lib\javax.comm.properties delete)
at java.security.AccessControlContext.java:270) at java.security.AccessController.checkPermission(SecurityManager.java)
at java.lang.SecurityManager.checkDelete()
at java.comm.CommPortIdentifier.getPortIdentifiers(CommportIdentifier.java)
Please help me.Tell me what to do.how to successfully access a communication port from a Servlet.

Hi there. I am also facing the problem accessing com port via servlet. if u have the solution, kindly forward to me at [email protected]
many thanks

Problem with Com port

Hi guys. I have written a driver to communicate with a COM port (FTDI serial adapter). On the pc from which I'm writing now (windows XP) it works properly, but when I try to use the same driver on another pc (win 7) labview see the port but isn't able to comunicate . I tried also to use a software like Tera Term to see if the com works and trying the echo it works good...so I don't understand where the problem is on this w7 pc...
should I install some labview drivers on the w7 pc? I have already installed
NI run time installer
NI max
NI Visa run time

NI Serial won't help (its for NI serial cards not 3rd party USB-Serial bridges)
LabVIEW sees the VCP in Win7 but does not communicate: Works on XP: "Something" happens with Echo on from teraterm.
I'l guess either:
Wrong serial cable or settings and you are fooling yourself with the tereterm app and are seeing the echo only. With Echo on any character sent should be doubled.
Outdated FTDI Driver that does not support Win7.
Jeff

Problem with COM port opening

I made an application using COM port to dialog with a microcontroleur and i have some troubles with the opening of the port. i developed it under window XP pro and labview 6.1 and i have no problem when i launch my application on an XP PC having labview installed or on a window 98 PC without labview (just the runtime engine). But when i launch it on an XP pc with only the runtime engine, it seems to launch correctly but in fact, there is a problem with the COM port opening. The menu allowing to chose the port number is inactive and has no effect, like if the software wouldn't recognize the material port on the PC. And consequently, nothing happens when the dialog should start.
Thank tou for your precious help
Julien LEGRAND
French Natio
nal Institute for Sea Reseach

Is the VISA run-time engine installed? I don't understand why it would work on the win98 machine unless you have an older installation of it there.

Newbie : working with INTERRUPTS with SERIAL com port ?

hi guys !
here is the deal :
my app needs to
monitor a com port while doing something else
or to be interrupted when something is available on the com port.

Ive been trying to do something similar
so far I launch a new thread, which sets up a comcallback to trigger on
0x05 comming through the serial port (ENQ)
unfortunately, this seems to ltake like 100% CPU
Grahh!
im doing this in cvi...but i should think you can do the same in labview
andy
jerry wrote in message
news:7sqnad$45u$[email protected]..
> hi guys !
>
> here is the deal :
>
> my app needs to
> monitor a com port while doing something else
> or to be interrupted when something is available on the com port.
>
>

COM port are not shown in my application

Hello,
there is a reason why com ports are not shown on a Xp Embedded Touch Panel?
I have to communicate through a serial port in my application but com ports are not shown in Visa Resource Name control ...
I have included all VISA related things in additional installer ...
Solved!
Go to Solution.

Ok, i checked functionality of COM ports with a non-National Instruments programs and all it's working. Only Labview apps cannot see them.
On another PC where the Labview app works if i look at installed Programs in NATIONAL INSTRUMENTS section i can see:
NI VISA RUN TIME 5.1.0
NI VISA 4.5 for Labview on Windows Mobile/CE
On the machine where there the problem under National Instruments SW i can see only:
NI system components
but i've added in additional installer section of the app installer all VISA related stuff...

How can i read an COM port ???

Hi,
somebody knows how can i read an COM port from Forms 4.5 ?
Thanks in advance.
Patricio

Hi Patricio
have U got any solutions?? Im also trying to send message to display panel from forms 5.
If You got any please let me know itll help me a lot
Thanx
Suraj

Why is my com port missing from my list of VISA devices

Hello all,
I have an Agilent E5810 ethernet to GPIB gateway. I installed Agilent IO library and chose to make Agilent my primary VISA because otherwise the devices on the gateway didn't show up in my VISA device list. Now all of my GPIB devices show up (local and via gateway) but my com port is missing. The com port is actually a USB to serial adapter. It shows up in device manager as CP2101 uart interface COM6. I reloaded NI-VISA but COM6 still oesn't show up. I reloaded Agilent IO and unchecked "make Agelent primary VISA" but that didn't fix it. It is also missing from MAX. I added COM6 ASRL6 but VISA doesn't see it
I think the root of my problem is getting Agilent VISA and NI VISA to work together but why won't my com port show up?
Thanks alot

Hello,
Can you please follow the steps outlined in the following forum post and reinstall NI-VISA and Agilent VISA?
Problem with NI VISA and Agilent VISA
If the problem still exists, please call 1-866-275-6964 and reference your call to your service request number (1194753).
Thank you,
Simran K
National Instruments
Applications Engineer

Solaris com port

Similar Messages

Maybe you are looking for