Serial 625kbaud Communication Problem

Hello
I would like to use the standard VISA write/read vi's to support communication with a baudrate up to 625kbaud (no parity, 8bits, no data control). It works
fine with 312kbaud so far but not with any higher baudrate. As interface I am using an express card which supports the desired speed and works fine with
an external terminal program.
What are the maximal baud rates supported from the VISA write/read? Is there any "special" settings which needs to be considered?
Thanks in advance

Serial Baud Rates Supported By NI-VISA

Similar Messages

Serial port communication problems

Hello. I am trying to control a MKS Instruments 651C Pressure Controller via RS-232. Right now, I am just trying to establish basic communication with the device over the serial port. I can connect to the device with windows hyperterminal using the following settings:
Bits per second: 9600
Data bits: 8
Parity: None
Stop bits: 1
Flow control: None
Once I connect, I go to File-->Properties, Settings tab,and click on ASCII Settings button. I must check the following boxes (not checked by default) for any communication to occur:
Send line ends with line feeds
Echo typed characters locally
Append line feeds to incoming line ends
Force incoming data to 7-bit ASCII
Once I have all that set, I can communicate with my device via hyperterminal. What I would like to do now is to use LabVIEW to control the device, so I need to be able to send/receive data over the RS-232 connection via LabVIEW. I have been using the Basic Serial Write and Read vi, but I am not getting any response from my device. Looking at the block diagram for the basic read/write, I saw that Enable Termination Char was hardwired to false, so I changed it to a control and set it to true. I also changed Termination Char to a control and set it to 0xD for CR. I still cannot get a response from the device.
I'm guessing that I am still not setting everything for the serial port setup correctly. Can anyone give me some suggestions on what else to modify to match my hyperterminal settings? Thanks!
Solved!
Go to Solution.

Have you tried running NI-Spy to see what is actually happening on the serial port? This may help you narrow down what is happening. I also wonder if you are having an issue since you are using 8-bit ASCII when you open the port but in hyperterminal you are telling it to use 7-bit ASCII to read the data.
Mark Yedinak
"Does anyone know where the love of God goes when the waves turn the minutes to hours?"
Wreck of the Edmund Fitzgerald - Gordon Lightfoot

Serial Communication problem in LabVIEW 7.0

I recently upgraded my test computer from a 450 Mhz machine to a
Del 2.8 Ghz Pentium 4processor with 512meg's of ram using Windows 2000 for the operating system running LabVIEW 7.0.
I use the serial port to communicate with a piece of hardware,
Rs232, 115200 baud, 8 bits, 2 stop bits. NO hardware or software handshaking
The hardware is capable of receiving data from the computer at a full 115200 baud up to 65k transfers at a time with no extra delays.
The problem that the serial data coming from the new Dell computer will send out 2 bytes then waits 2 to 3 milliseconds and sends 2 more bytes.
I generated a separate serial VI that will jest shove data out the serial port.
The VI is a VISA configure serial po
rt, into a while loop that contains 6 VISA Write VI
And on the backside of the wile loop a VISA close.
The above VI will generate the serial data stream as stated above
EXCEPT when I put a PROBE on each of the ERROR OUT of the 6 writes, then the serial port will generate a continuous serial data stream with no millisecond breaks.
I have changed the FIFO Buffer settings (all the possible combinations) of the serial port in Windows 2000, and that has hade no effect.
Any help would be greatly appreciated
James Zumstein
E-mail [email protected]
Attachments:
Serial_Test_1.vi ‏45 KB

Greetings!
Serial port commucations problems can be a real joy, can't they? Have you tried communicating with your instrument with Hyperterm? Usually Hyperterm is capable of operating with almost no overhead, so you can see if there's any strange symbols being transmitted that might be holding things up. There might be an extra CR being inserted, or something like that, which will show up as heiroglyphics in Hyperterm. See if all your symbols coming back are valid. This is where I usually start.
Hope this helps.
Eric
Eric P. Nichols
P.O. Box 56235
North Pole, AK 99705

Serial port communication IRP_MJ_READ

Hello, i would like to ask you about serial port communication. I am currently trying to make application for communication with my stepper motor (Microcon), but it doesnt work. If i try to communicate with original software, my serial port monitor gives me values
IRP_MJ_WRITE when i write some values and
IRP_MJ_READ when i try to read from serial port
But when i am using LabView i am only able to send IRP_MJ_WRITE function using VISA write component (so this one works good), but when i use VISA read component my serial port monitor gives me only IRP_DEVICE_CONTROL. Have you any sugestion where can be problem? I have no idea how to get this IRP_MJ_READ function using LabView VISA component.
Solved!
Go to Solution.

Are you monitoring the using PortMon software ? Only thing I can see here is that check the command what you send, there might be some space which you might have introduced while typing,
or
Are you still running stepper motor control software while running the labview ? In this case there will be conflict.
When you are using original stepper motor software and when you send command wirte down the hex value (see in portmon or anyother monitoring software) and try sending same hex values using labview. Sending command, sending hex are same but just give it a try,
Use bytes at port function before VISA read to read all the available data.
Search for Microcon drivers in Instrument driver network in NI website if you want easy & fast solution.

Communication problem between NetBeans and Tomcat

hi!
i got a quite mysterious problem. here is what happens:
- i start NetBeans 5.5.1 (the first time)
- i want to debug my JSF-Project, the Debugger starts
- After a few seconds the debugger waits for tomcat (it sais: "Waiting for Tomcat...") and tomcat starts
- Again after a few seconds the tomcat-debugger-output sais "Tomcat startet in 3333 ms".
okay.
when i enter http://localhost:8084/ in my browser i get the tomcat homepage, so the server has definitely started! But nothing happens in NetBeans and nothing happens with my project....
In the lower-right corner i see this blue working-bar that sais "deploying project" but nothing happens. The Project-Debugger-Output still sais "Waiting for Tomcat..." but nothing happens...
And after something around 3 minutes (i guess it's a timeout) i get the error "Starting of Tomcat failed." But is HAS started, i can login to the Administration-Area in my browser!
so i guess there is a communication problem between netbeans an tomcat. Netbeans waits for a message from tomcat but tomcat doesn't send it..or netbeans doesn't understand it.
But the story goes on:
When i press the debug-button a second time it takes only a few seconds till i get the message: "Tomcat server port 8084 already in use". OF COURSE! Because Tomcat has already startet and can't be stoped by NetBeans.
i'm trying to solve this problem for 4 days now, so i would be very happy if anyone has an idea where to start/continue the search...
thanks,
flo.
some system-info:
- windows vista business 32-bit
- no firewall is running
- AntiVir Personal Edition IS running
- Yahoo Widgets Engine IS running
- no other software is running
and finally the tomcat-log:
Using CATALINA_BASE: C:\Users\Administrator\.netbeans\5.5.1\apache-tomcat-5.5.17_base
Using CATALINA_HOME: C:\Program Files\NetBeans\enterprise3\apache-tomcat-5.5.17
Using CATALINA_TMPDIR: C:\Users\Administrator\.netbeans\5.5.1\apache-tomcat-5.5.17_base\temp
Using JRE_HOME: C:\Program Files\Java\jdk1.5.0_12
Listening for transport dt_shmem at address: tomcat_shared_memory_id
21.09.2007 18:27:50 org.apache.catalina.core.AprLifecycleListener lifecycleEvent
INFO: The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jdk1.5.0_12\bin;.;C:\Windows\system32;C:\Windows;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Program Files\QuickTime\QTSystem\;C:\Program Files\ThinkPad\ConnectUtilities;C:\Program Files\Common Files\Teleca Shared;C:\Program Files\Common Files\Adobe\AGL;C:\Program Files\MySQL\MySQL Server 5.0\bin;C:\Program Files\cvsnt;
21.09.2007 18:27:50 org.apache.coyote.http11.Http11BaseProtocol init
INFO: Initializing Coyote HTTP/1.1 on http-8084
21.09.2007 18:27:50 org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 1862 ms
21.09.2007 18:27:50 org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
21.09.2007 18:27:50 org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/5.5.17
21.09.2007 18:27:50 org.apache.catalina.core.StandardHost start
INFO: XML validation disabled
21.09.2007 18:27:53 org.apache.coyote.http11.Http11BaseProtocol start
INFO: Starting Coyote HTTP/1.1 on http-8084
21.09.2007 18:27:54 org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
21.09.2007 18:27:54 org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/31 config=null
21.09.2007 18:27:54 org.apache.catalina.storeconfig.StoreLoader load
INFO: Find registry server-registry.xml at classpath resource
21.09.2007 18:27:54 org.apache.catalina.startup.Catalina start
INFO: Server startup in 3626 ms

As i wrote before, the same problem occured for me. I have found a solution which is : Go to tools menu and then select options . In the proxy info, select No Proxy.
I hope this help you

Communication Problem with the second battery

Hello,
In Lenovo Solution Center it says that there is communiction problem with the second battery. I already had this problem some months ago, back then it didn't charge the second battery. I got a new one and it worked again. Now it says the same thing "communication problem", but i can charge the battery and I also can't find any other sign of something not working. But still- it seems weird that the program tells me something is wrong. Can somebody help me?
Thanks Lina

Hi, Lina
What is the machine type and model of your computer? Also, what operating system are you running?
Thanks in advance,
Adam
Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution!" This will help the rest of the community with similar issues identify the verified solution and benefit from it.

Communication problem with proxy server

We have establish the configuration of an iPad to access the enterprise net, but when trying to access any webpage we get the next message: Safari can not open the page. Error:"There is a communication problem with proxy web server (HTTP)"
The access has no problems with other movile devices.
Ahy help?

Hi,
I am not sure whether you have already solved the problem or not....
Do the following to deploy MobileBIService.war file on tomcat
1.Stop Tomcat Web application server.
2.Copy the file, MobileBIService.war from [Install directory]\Mobile 14\Client to the Tomcat's "Webapps" directory.
In my case, I copied the MobileBIService.war from C:\Program Files (x86)\SAP BusinessObjects\Mobile14\Client to C:\Program Files (x86)\SAP BusinessObjects\Tomcat6\webapps. ( I used BO 4.0 SP02)
3. Start Tomcat.
Restarting Tomcat would automatically deploy war file as a Web App
One folder u201CMobileBiServiceu201D will appear in webapps folder when MobileBIService.war is deployed successfully.
Hope it helps.
Regards,
Ankur

Communication problem the web server extension (WGATE) failed to receive a

Hi,
When a user tries to access his timesheet he get the below error:
<b>communication problem the web server extension (WGATE) failed to receive a response from the ITS web service</b>
Only ONE user is getting this error. If everyone get\s the same we can check on the ITS side, but if only ONE user is getting it.
Please help.
Regards,
PK

HI ALL,
Thanks for your time. The issue got resolved however without cheking the logs itself. The problem was with the scripfile. All other users and all other scripts were working, except one. And it got recified.
Regards,
P. Kumaravel.

COMMUNICATION PROBLEM WITH SCANNER TO COMPUTER OF DESKJET 3050 j610

WHEN i TRY TO SCAN USING MY DESKJET 3050 j610 A MESSAGE SHOWS 'COMMUNICATION PROBLEM NOT CONNECTED THEREFORE i AM NOT ABLE TO SCAN.
i HAVE BEEN TRYING TO RESOLVE THIS PROBLEM OVER 8 HOURS AND I' M GETTING SICK. I'VE TRIED EVERYTHING AVAILABLE ON THE SUPPORT PROGRAMS INCLUDING 'PAINT' AND NOTHING WORKS.
I NEED A ANSWER OR I;LL THROW THIS THING OUT

I have the same problem here, i have two PC's both running Windows 7 but only one works printing and scanning wirelessly.
On the PC running Windows 7 32bit wireless printing and scanning works great.
On the PC running windows 7 64bit only wireless printing works. Havent found a solution, but just a work around. Here it is......
1. Got to you printer and hit the Wireless button to find the IP address your router gave it.
2. Open up your Internet browser and input the IP address.
and...BAM!!! if it worked it should take you to the Deskjet 3050 All-in-One J610a Embedded Web Server page and from there you can scan with what looks like all the original options if the thing was working to begin with and save to your PC.

Communication Problem: E_ADEPT_REQUEST_EXPIRED

I keep getting this message :
Error getting License. License Server Communication Problem:
E_ADEPT_REQUEST_EXPIRED

The same problem. Origin is, I suppose, a changement of profile when I lost all my data and programs by a virus. Who can help us?

Communication problem

Hi, I think I have a communication problem between the servers in a cluster,
          I attached a picture of the administration console where it seems that one
          server in the cluster cant communicate with the other.
          (one server is running on Windows and the other on Linux)
          Any ideas to solve this problems?
          Thanks
          [console.jpg]


Using multicastTest I found that the messages that the windows machine
          produces are lost. Nobody receives that messages.
          I don't know what might be happening
          cheers
          "Campot" <[email protected]> escribió en el mensaje
          news:[email protected]..
          > Hi, I think I have a communication problem between the servers in a
          cluster,
          > I attached a picture of the administration console where it seems that one
          > server in the cluster cant communicate with the other.
          > (one server is running on Windows and the other on Linux)
          >
          > Any ideas to solve this problems?
          > Thanks
          >
          >
          >

Communication problem from the vpn-anyconnect to easy-vpn-remote

Hi Team,
I have a communication problem from the vpn-anyconnect to easy-vpn-remote, I´ll explain better bellow and see the attached
topology:
1) VPN Tunnel between HQ to Branch Office - That´s OK
2) VPN Tunnel between Client AnyConnect to HQ - That´s OK
The idea is that the Client Anyconnect is to reach the LAN at Branch Office, but did not reach.
The communication is stablished just when I start a session (icmp and/or rdp) from Branch Office to the Client AnyConnect,
in this way, the communication is OK, but just during a few minutes.
Could you help me?
Bellow the IOS version and configurations
ASA5505 Version 8.4(7)23 (headquarters)
ASA5505 Version 8.4(7)23 (Branch)
**************** Configuration Easy VPN Server (HQ) ****************
crypto dynamic-map DYNAMIC-MAP 5 set ikev1 transform-set ESP-AES-256-SHA
crypto map outside-link-2_map 1 ipsec-isakmp dynamic DYNAMIC-MAP
crypto map outside-link-2_map 65535 ipsec-isakmp dynamic SYSTEM_DEFAULT_CRYPTO_MAP
crypto map outside-link-2_map interface outside-link-2
access-list ACL_EZVPN standard permit 10.0.0.0 255.255.255.0
access-list ACL_EZVPN standard permit 192.168.1.0 255.255.255.0
access-list ACL_EZVPN standard permit 192.168.50.0 255.255.255.0
access-list ACL_EZVPN standard permit 10.10.0.0 255.255.255.0
group-policy EZVPN_GP internal
group-policy EZVPN_GP attributes
split-tunnel-policy tunnelspecified
split-tunnel-network-list value ACL_EZVPN
nem enable
tunnel-group EZVPN_TG type remote-access
tunnel-group EZVPN_TG general-attributes
default-group-policy EZVPN_GP
tunnel-group EZVPN_TG ipsec-attributes
ikev1 pre-shared-key *****
object-group network Obj_VPN_anyconnect-local
network-object 192.168.1.0 255.255.255.0
network-object 192.168.15.0 255.255.255.0
object-group network Obj-VPN-anyconnect-remote
network-object 192.168.50.0 255.255.255.0
object-group network NAT_EZVPN_Source
network-object 192.168.1.0 255.255.255.0
network-object 10.10.0.0 255.255.255.0
object-group network NAT_EZVPN_Destination
network-object 10.0.0.0 255.255.255.0
nat (inside,outside-link-2) source static Obj_VPN_anyconnect-local Obj_VPN_anyconnect-local destination static Obj-VPN-
anyconnect-remote Obj-VPN-anyconnect-remote no-proxy-arp route-lookup
nat (inside,outside-link-2) source static NAT_EZVPN_Source NAT_EZVPN_Source destination static NAT_EZVPN_Destination
NAT_EZVPN_Destination no-proxy-arp route-lookup
nat (outside-link-2,outside-link-2) source static Obj-VPN-anyconnect-remote Obj-VPN-anyconnect-remote destination static
NAT_EZVPN_Destination NAT_EZVPN_Destination no-proxy-arp route-lookup
**************** Configuration VPN AnyConnect (HQ) ****************
webvpn
enable outside-link-2
default-idle-timeout 60
anyconnect-essentials
anyconnect image disk0:/anyconnect-win-2.5.2014-k9.pkg 1
anyconnect profiles Remote_Connection_for_TS_Users disk0:/remote_connection_for_ts_users.xml
anyconnect enable
tunnel-group-list enable
access-list split-tunnel standard permit 192.168.1.0 255.255.255.0
access-list split-tunnel standard permit 192.168.15.0 255.255.255.0
access-list split-tunnel standard permit 10.0.0.0 255.255.255.0
group-policy clientgroup internal
group-policy clientgroup attributes
wins-server none
dns-server value 192.168.1.41
vpn-tunnel-protocol ssl-client
split-tunnel-policy tunnelspecified
split-tunnel-network-list value split-tunnel
default-domain value ipconnection.com.br
webvpn
anyconnect keep-installer installed
anyconnect ssl rekey time 30
anyconnect ssl rekey method ssl
anyconnect profiles value Remote_Connection_for_TS_Users type user
anyconnect ask none default anyconnect
tunnel-group sslgroup type remote-access
tunnel-group sslgroup general-attributes
address-pool vpnpool
authentication-server-group DC03
default-group-policy clientgroup
tunnel-group sslgroup webvpn-attributes
group-alias IPConnection-vpn-anyconnect enable
object-group network Obj_VPN_anyconnect-local
network-object 192.168.1.0 255.255.255.0
network-object 192.168.15.0 255.255.255.0
object-group network Obj-VPN-anyconnect-remote
network-object 192.168.50.0 255.255.255.0
object-group network NAT_EZVPN_Source
network-object 192.168.1.0 255.255.255.0
network-object 10.10.0.0 255.255.255.0
object-group network NAT_EZVPN_Destination
network-object 10.0.0.0 255.255.255.0
nat (inside,outside-link-2) source static Obj_VPN_anyconnect-local Obj_VPN_anyconnect-local destination static Obj-VPN-
anyconnect-remote Obj-VPN-anyconnect-remote no-proxy-arp route-lookup
nat (inside,outside-link-2) source static NAT_EZVPN_Source NAT_EZVPN_Source destination static NAT_EZVPN_Destination
NAT_EZVPN_Destination no-proxy-arp route-lookup
nat (outside-link-2,outside-link-2) source static Obj-VPN-anyconnect-remote Obj-VPN-anyconnect-remote destination static
NAT_EZVPN_Destination NAT_EZVPN_Destination no-proxy-arp route-lookup

Hi,
the communication works when you send traffic from easyvpn branch side because it froms the IPSEC SA for local subnet and anyconnect HQ pool. The SA will only form when branch initiates the connection as this is dynamic peer connection to HQ ASA.
when there no SA between branch and HQ for this traffic, HQ ASA has no clue about where to send the traffic from anyconnect to branch network.
I hope it explains the cause.
Regards,
Abaji.

Communication problem with printer when using Parallels

OK, apologies if this has been asked elsewhere but I've been trawling the forum for an hour and have yet to find the exact problem that I'm having!
First of all, I'm a recent convert to Mac (hurrah I hear you all cry), secondly, I've set up Parallels to deal with some PC left-overs, thirdly, I've tried to use my old Dell printer and realised Dell doesn't support Macs (or not my AIO 922 anyway).
So, I thought I'd get round this by installing the drivers for the printer on the Windows partition, which all went well until I actually tried to print something... although the printer is visible and 'on-line', I get the box informing me there's a communation problem with the printer and computer.
It's beginning to wind me up so any info/advice would be greatly appreciated

This is either a Windows or a Parallels problem. For Parallels go to http://forum.parallels.com. For Windows go to the support forums at Microsoft.
There is no support for either product at these Discussions.

Communication problem, deskjet 920c

I received a note for a repair to a communications problem for my printer. When I tried to download it, I got to a "dot4 scrubber" which stalled everything. I had to reboot my computer to get rid of the note.

Hi robincom2,
Thank you for joining the HP Support forums. I understand that you received a message about a communications issue with your printer.
I have included a document with the trouble shooting steps you need to take to resolve the issue. I know that you weren't installing the printer when you received the error, but it's the trouble shooting steps that are important. Please follow the instructions for Steps one and two, as the software is already installed you shouldn't need to follow Step three.
Software Installation Stops Without Warning and With No Error Message
Regards,
Happytohelp01
Please click on the Thumbs Up on the right to say “Thanks” for helping!
Please click “Accept as Solution ” on the post that solves your issue to help others find the solution.
I work on behalf of HP

Communication problem with Adobe 9.0 and HP Printer when I scan

I'm having a problem getting a .pdf file to come up when I scan from a HP 5610 All-in-one printer. Have uninstalled and reinstalled HP software three times but when I scan and want a pdf file it won't communicate with Adobe 9.0 reader for some reason. Is there a setting in Adobe reader that's a problem?
Thanks.

Thanks...found out that an HP5610xi All-in-One will not completely communicate with Adobe 9.0 Had to go to Adobe 6.0
Date: Thu, 17 Dec 2009 03:19:49 -0700
From: [email protected]
To: [email protected]
Subject: Communication problem with Adobe 9.0 and HP Printer when I scan
May be that the HP software doesn't support Adobe Reader 9.
>

Serial 625kbaud Communication Problem

Similar Messages

Maybe you are looking for