TCP Through Serial Port

Question

DongBin Lee 2011-5-23

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/8028-tcp-through-serial-port

I need to use simulink TCP/IP send and receive blocks to send to TCP messages to from my xpcTarget PC to a server. My problem is that my Ethernet port is already being used for another application. Therefore, I must use wireless access connected through a serial port in order to send these TCP messages. I have found a wireless device to fit my needs (<http://www.gridconnect.com/80211.html)>. My concern is how I will be able to send TCP messages over the Serial wireless card using Simulink. I figure that the TCP send and receive blocks are configured to send data to the Ethernet port. Is there anyway to instead direct these messages to a serial port?

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Answer 1

Arnaud Miege 2011-5-23

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https://ww2.mathworks.cn/matlabcentral/answers/8028-tcp-through-serial-port#answer_11028

It's not clear what you want to do:

Send messages over TCP/IP from Simulink on your host machine (which is presumably connected to your target machine via TCP/IP)?
Send message over TCP/IP from xPC Target on your target machine?

For #1, you can use the TCP/IP Receive and TCP/IP Send blocks from the Intrument Control Toolbox. The fact that your Ethernet port is already used (presumably by TCP/IP communications with the target PC) shouldn't matter.

For #2, you can use:

Model-Based Ethernet to send messages using Ethernet/IP. That requires a second, dedicated, network card.
Real-Time UDP (new in R2011a)
UDP/IP

For the last two, it shouldn't matter that the Ethernet port is alreayd being used (presumably for TCP/IP communications with the host).

HTH,

Arnaud

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Jason Ross 2011-5-23

The second dedicated Ethernet card is going to be considerably less expensive than the product you linked, you can find them under $10. It seems like a lot less trouble.

Arnaud Miege 2011-5-23

OK, the choice is yours. Read the doc about Model-Based Ethernet and make sure to use a supported Ethernet chipset:

http://www.mathworks.com/products/xpctarget/supported-hardware/xPC_Target_Supported_Ethernet_Chipsets.pdf

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Answer 2

Chhailin 2011-7-3

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https://ww2.mathworks.cn/matlabcentral/answers/8028-tcp-through-serial-port#answer_14833

can you confirm us about connection that we can convert RS232 TO wireless.it is the hardware "ConnectSense™ - Industrial Device Server, Wired, Wireless, POE,". website http://www.gridconnect.com/80211.html