Frequently Asked Questions relating to serial tunnelling.

Serial Tunnelling

Can I connect a Netport each at the 2 sites, to the RS232 communication link and manage my remote device from central site, as if it was an extended ethernet link?

Submitted by dlaverty on Mon, 2012/10/08 - 13:11

Yes. The Netport will accept serial traffic, encapsulate it in an Ethernet packet and transmit the data across the network, a process known as 'Ethernet Tunnelling', effectively giving you a long serial connection.

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How much bandwidth would the serial / ethernet adapter take if I add this in a network?

Submitted by dlaverty on Fri, 2012/08/24 - 09:14

The bandwidth largely depends upon the speed of the serial port and the nature of the protocol used by your serial device. Asa a result it is difficult to be precise as to the bandwidth that will be used.

In general. the amount of serial data is typically very small and is negligible on an ethernet network.

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I've a weighing scale with RS232, I want to see from my remote PC the weight on my web browser when the distant guy take place.

Submitted by Jack Hughes on Thu, 2012/08/02 - 14:42

The RS232 to serial converter will allow you to effectively move the RS232 interface to anywhere on your network. So you could use whichever application you are now using to read the weighing scale on a PC that is potentially many hundreds of metres away from the weighing scale itself. The only problem I can see is that a web browser can't "browse" the RS232 interface, either a physcial one attached to the weighing scale or a remote virtual RS232 port provided by the RS232 to serial converter software, so I don't believe that would be possible.

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I specifically want to go from ethernet, over a serial link, then back to ethernet?

Submitted by araynor on Mon, 2011/12/19 - 11:28

The Netport will convert traffic to serial link across an ethernet connection so that you can put a serial device onto an ethernet network and see it over the network. If you had serial devices in between 2 ethernet connections the Netport will do this. The LAN06 takes its power over pin 9 or the LAN01 and LAN02 take their power from the adaptor.

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Can NetPort be used for transmitting serial data by email?

Submitted by dlaverty on Tue, 2010/08/31 - 09:29

The Netport does not send emails, it simply allows a serial device to connect to an IP network using a process called 'serial tunnelling'. The standard serial data is encapsulated in a TCP/IP packet and transmitted over the network.

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I'm searching for a RS232 cable for a Benzing G2 RS232 Data Cable

Submitted by dlaverty on Wed, 2010/03/31 - 09:19

Standard serial cables are widely available, but the powered cable that you require is a more specialised item. Best place to look is one of the large component suppliers, Farnell, RS, Lindy etc.

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I need to connect a serial port on a printer to a Unix box - will the Netport help?

Submitted by araynor on Wed, 2010/02/17 - 10:15

Yes this should be possible, but you may need to use 2 Netport adaptors instead of one. The use of a single Netport requires the installation of a software based virtual serial port. The driver software supplied with the Netport that implements the virtual serial port will only work on Microsoft Windows. We would need to know a little more about what you are wanting to achieve before we can give you a definitive answer, please get in touch.

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I want to connect my program which using serial port to control through internet my plc.

Submitted by dlaverty on Thu, 2010/02/11 - 10:16

Yes. The Netport connects serial devices to ethernet networks, allowing you to send serial data across the network, using a technique known as serial tunnelling.

The netport can be used in two modes.

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I need to connect a phone switch to a PC using serial but need to do this over an ethernet connection

Submitted by dlaverty on Fri, 2010/02/05 - 11:51

It depends on the connectors on the devices you have. Netport LAN01 is the DTE version, LAN02 is the DCE version. Both devices are functionally identical but the one is Male-Female (DCE) and the other Female-Male (DTE).

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