I don't know if anyone can advise me. I am trying to communicate between 2 machines, 1 running as an xPC boot target and 1 running in RTW (it is also the xPC Host).
The xPC model uses the UDP Receive/Send Binary blocks and the RTW machine is running Packet Input/Output blocks. I am failing to communicate between the two at present. I believe my problem is a port routing issue. The RTW input/output (block parameters>board setup>Standard Devices>UDP Protocol asks for ports in Hex. The xPC binary input/output doesn't specify. At present I am trying to communicate from port 2328(hex) to 2329(hex), on the RTW machine, which is input as from port 9000 on the xPC machine.... does that make sense?
Any advice would be gratefully received.
"Noel " <g.n.b.hathorn@-RemoveThis-cranfield.ac.uk> wrote in message <email@example.com>...
> I don't know if anyone can advise me. I am trying to communicate between 2 machines, 1 running as an xPC boot target and 1 running in RTW (it is also the xPC Host).
> The xPC model uses the UDP Receive/Send Binary blocks and the RTW machine is running Packet Input/Output blocks. I am failing to communicate between the two at present. I believe my problem is a port routing issue. The RTW input/output (block parameters>board setup>Standard Devices>UDP Protocol asks for ports in Hex. The xPC binary input/output doesn't specify. At present I am trying to communicate from port 2328(hex) to 2329(hex), on the RTW machine, which is input as from port 9000 on the xPC machine.... does that make sense?
> Any advice would be gratefully received.
> Many thanks
Eventually sorted, it was a data type problem. The hex addressing on the Packet Input/Output blocks was correct, with DEC addressing on the UDP binary blocks...
upd ip packet Hi
UDP client server with Internet domain socket is unreliable when client
and server run of different workstation.What if client server run on the
same workstation. any comments/explaination which gives the
reliability/unreliable for packet missing
Understanding from few examples on solaris workstation ; when client send
a udp packet through
sendto() to server ( with same client workstation IP as the sending ip ) ,
the packet doesnot go through different layers down to ethernet/NIC .
Correct me if I am wrong here.
I tried making a udp client and traced the packet through sn...
Lost UPD Packets with no network Hi,
I use an application which has one module in Windows and another
in Unix. The windows and Unix machines are connected via a cross cable.
The Windows and Unix modules communicate via UDP packet transfer.
My problem is that , even though there is no network involved, i
lose some udp packets during transfer, due to which one of my module
hangs waiting for data.
Any suggestions on why this could be happening?
> I use an application which has one module in Windows and another
> in Unix. The windows and Unix mac...
simulink/xPC/RTWT communication questions We're considering using Matlab (simulink or xPC or Real Time Windows Target) to control an older Adept robot. The robot controller requires TCP/IP, which I gather is not supported for xPC. In addition, some separate sensor hardware is currently designed to use USB (the chip has windows drivers to create a virtual COM), however it could be quickly redesigned to use RS232 serial directly.
My question is which of the three control options (simulink/xPC/RTWT) allows us to use which of the three communication options "out of the box", with the least work on our part?
Aborted clients Hello,
I get pages of error logs with this message -
"Got an error reading communication packets". And the aborted clients
are easily in hundreds.
Here is my set of configurations:
I am running Microsoft .Net 2.0 on Windows 2003 Server using IIS 6.0.
I am using Mysql 5.0 with Mysql/.Net Connector 1.0.
Some of the settings on my.ini -
Connection timeout - 180
Wait timeout - 360
Max packet size - 10 M
Max connections - 5000 (pretty high, but set to be on a safer side)
When a perform a netstat -ao - I have lot many sockets open with
TIME_WAIT status. On the MySql Command client - th...
Random 'make' error when using RTW for xPC I am using Simulink and RTW to build and download a model to
the xPC. I am using R2007a. Occasionally, I will get this
error when I try to build the model:
Creating library globalcountersimulator.lib and object
globalcountersimulator.obj : error LNK2001: unresolved
external symbol _rt_InitInfAndNaN
xpctarget.obj : error LNK2001: unresolved external symbol
rt_logging.obj : error LNK2001: unresolved external symbol
globalcountersimulator.dll : fatal error LNK1120: 2
NMAKE : fatal error U1077: 'link' : ret...
How would you communicate if... In Egypt, the government has shut down 4 out of 5 of the internet
companies and cellular companies to reduce the ability of it's
citizens organizing a resistance movement against the current
If the US Government gets an Internet Kill Switch, How would you
communicate if internet and cellular communications were shutdown?
It is much easier in Egypt because there are only 5 ISP's, in the
U.S. there are 4000.
An alkaline environment is detrimental to the "flu" organism, hence
alkalizing agents and an alkaline-reacting diet are helpful.
Edgar Cayce for E...
import packet.module without importing packet.__init__ ? Hi,
I am little shaky with how exactly python imports packages / modules etc.
Is it possible to import a module from a packet without importing its
# application.py ---------------------
print "starting application"
# mypacket.__init__.py ---------------------
print "importing __init__"
# mypacket.module1.py ---------------------
print "importing module1"
The output, that I get with python 2.6 is
$ python application.py
> starting application
> importing __init__
> importing mod...
How do packet sniffers determine that a packet is "mp3" traffic? -nt- ZT.
firstname.lastname@example.org (Zero Tolerance) wrote:
If Eve can construct the entire file (or at least the first bit) from
observing the traffic between Bob and Carol, she can use the "file" utility
that comes wih most unixoids to work out what type it is.
Bill, not to be sniffed at.
Zero Tolerance wrote:
I have often wondered to what degree we are being spied on. I wonder
what percentage of packets crossing the Atlantic are sniffed. I suspect
100% of them. I also wonder what percentage of packets on major UK
backbones are sniffed. Perhaps 100% there also. I...
We have an issue between a Catalyst Switch and a 3Com Switch.
Everithing seem fine, the users and network speed are ok, but we start
seeing "oversize packets" in the 3Com. The oversize counter in the 3Com
switch that connects to the Catalyst is growing. We change the 3Com and
the Cisco (originally was a 4503 and then we change it to a 2950) with
the same results. The 3Com is 3300XM. The port is a 802.1q trunk with 3
vlans (default and 2 more).
It's possible that there's a compromised machine on that segment
sending the oversize packets to cause a SYN-ACK...
Millions of packets I connect to the network via a laptop (physical) 10/100 LAN. Somehow
by the end of the day I have nearly 20 million packets recieved and 15
million sent. I do not do much more than other users with PCs who may
run up 100k packets max. I do not connect to constant streams of
internet traffic either.
What is going on please?
In article <email@example.com>,
James <firstname.lastname@example.org> wrote:
>I connect to the network via a laptop (physical) 10/100 LAN. Somehow
>by the end of the day I have nearly 20 million packets recieved and 15
communication protocol hi to all.
we have to make a project for the university using a Fm reciver and emitter we need to send a signal between two computers wich will communicate each other; the communication will be half duplex.
Our teacher told us that we must use labview and DAQs , and the Ni elvis to do it and that we need to create something like a communication protocol in labview. We want to have control over the revolutions of an engine, when a number of revolutions be reached&...
communicating with julabo i am working with a julabo he-4 bath. i am trying to get/ develop a vi that will allow me to send a setpoint, read it back, get the process value and parse the error genrated into its constituent errors and display on front panel. if anybody has a vi appreciate it if you can share.
Microwave communications I need to design a system that communicates in the microwave range (>
5GHz) using a horn antenna... Does any body know if there are any off
the shelf chipsets, or can point me in the direction of any reference
designs or manufacturers. The system would be very low power.
On Wed, 30 Jul 2008 23:31:32 -0700 (PDT), email@example.com
>I need to design a system that communicates in the microwave range (>
>5GHz) using a horn antenna... Does any body know if there are any off
>the shelf chipsets, or can point me in the direction of any reference
Packet Capturing Hi all
I want to do some 'sniffing' on my network due to users reporting
speed issues on the LAN, I have PRTG installed but I am not seeing
anything unusual in the graphs to indicate high utilisation on the LAN
I have downloaded and installed Ethereal. On my system of course in a
switched network, I am seeing traffic over the wire, but it is only
traffic originating or destined for my IP and of course broadcast
I remember there was a way on a Cisco switch to set a port that
basically acts as a conduit for all traffic that passes over the
I want to set a system up to capt...
Http Communication Hi people,
I have developed a game with J2ME and now i need to add a communication
http module. I found some code in the motorola site for doing the
operation i need (A simple "GET") but it doesn't work on some phones. I
have tested it on some Nokia phones and it works but it doesn't work in
my Motorola V3 for example. My phone is perfectly working for surfing
on the web with the browser and I think the settings are ok but the
midlet cannot do the GET.
The URL where i found the code is that:
I hope someone can help me.
communication #3 Dear friends,
i need some mfile and simulink in these course please if you have any
help me by sending it, i will help you in some cases,
-fuzzy logic-medical image processing-coding-radar-microstrip antenna
Packet forwarding Is there something similar to the FreeBSD ipfw 'fwd' command in iptables?
I'm trying to split traffic from a LAN across 3 public IPs for load
Andy Zhang wrote:
> Is there something similar to the FreeBSD ipfw 'fwd' command in iptables?
> I'm trying to split traffic from a LAN across 3 public IPs for load
> balancing purposes.
I am not familiar with FreeBSD, but are you looking for ip_forward:
echo "1" > /proc/sys/net/ipv4/ip_forward to enable forwardnig.
thread communication hello,
i would like to developp an application with a master and ten threads which are in a listening state of datas.
To realize this, each thread must control the presence of datas in it own pipe and can write datas in it pipe too.
i have already realize this with fifos, but i don't know if must use two fifos for the communication between the master and one thread or only one, because when the master has written a data in the pipe of the thread, he takes a state of "wait the acknoledge".
Microcontroller communication I want a microcontroller (Atmega48) to send a network packet to a
computer NIC. What do i need to do to achieve this. The microcontroller
will send a simple 144 byte packet and thats it. I just want to know
how the computer can receive this properly. Do i do it through the
microcontrollers UART? Or?
On 2006-03-20, firstname.lastname@example.org <email@example.com> wrote:
> I want a microcontroller (Atmega48) to send a network packet to a
> computer NIC. What do i need to do to achieve this. The microcontroller
> will send a simple 144 byte packet and thats it. I just want to k...
digital communication i want hepl in digital communication . in my project i want to trnamit
a signal from serial port of Atmel 89c51 wirelessly to another Atmel
89c51 serial port ,plz kindly help me in detail plz
<firstname.lastname@example.org> wrote in message
>i want hepl in digital communication . in my project i want to trnamit
> a signal from serial port of Atmel 89c51 wirelessly to another Atmel
> 89c51 serial port ,plz kindly help me in detail plz
You can write and therefore also presumably read.
Generally 90% of the help you need ...