Re: [time-nuts] rs-422 rs-232 to fast ethernet converter
Ser2net is the way to go for me. A hardware solution I have been using for this purpose for quite a while are those tiny USB-powered SoC-based "3G / 4G portable routers" from vendors like TP-Link (good little case designs - TL-MR3020 for instance which I currently use). The "3G" models don't actually have cellular modems, they just have a single USB port - and a Fast Ethernet port, and 802.11. They (can) run Linux. The newer ones have 4M onboard flash and you can flash them instantly with OpenWRT. You can drop the web UI to trim down flash usage if you want, but out of the box they will fit USB-serial drivers and ser2net. Just add a USB to serial cable (or even go wild and buy a quad one with an USB hub built in) and you are still below the price of a Raspberry Pi, nevermind a dedicated serial to Ethernet box. You can also add a mini USB hub, stick a mini USB key in and use it as storage overlay. OpenWRT has all the tools you need available in the package repositories. I paired mine with a 12Ah portable USB power bank, clipped on using 3M Command(tm) hook-and-loop straps. It ran on it for 48 hours straight. This setup has proven an invaluable tool in data centre work for emergencies and upgrades. I can hang it in a rack or keep it in my pocket, connect to kit using serial or Ethernet, and work from my smartphone over wifi. File transfers, firmware upgrades, whatever you want. Not sure if ser2net supports X/Zmodem somehow (it's probably down to the telnet client here) but for the times you need it, there's minicom. Naturally, USB-RS converters are not always the way to go, but the RPi needs one as well, it can only do TTL natively. With some DYI you can put the router board, USB hub and battery in a neat little box as well and add an antenna, for improved usability. Regards Wojciech Wojciech Owczarek -Original Message- From: Paul Alfille Sender: "time-nuts" Date: Mon, 24 Nov 2014 22:38:04 To: Discussion of precise time and frequency measurement Reply-To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] rs-422 rs-232 to fast ethernet converter There is a protocol for ending serial commands over telnet (tcp): RFC2217 See http://tools.ietf.org/html/rfc2217 A number of command line tools, like ser2net and netcat use the protocol. Some of the small serial servers support it and it can make using serial remotely tunneled over tcp seamless. On Mon, Nov 24, 2014 at 6:23 PM, Graham wrote: > > I have done a bit of searching and found that what I want to do is nothing > really new and their are several off the shelf applications which will work > just fine - linux and Windows based hence the mention of the Raspberry PI > and Beaglebone Black. Some of the higher end Arduinos (i.e. Yu) are capable > of running linux and Windows as well but it would be entirely possible to > roll you own using the lower end Arduinos as well. > > I found some answers rather quickly after I started searching for the > right things, for example Serial to Network Proxy. > > On Windows you could use a virtual serial port to do the redirecting from > com port to network and on linux there are several the one I found often > mentioned is socat. > > The little serial to fast ethernet boxes which I was finding would work in > the situations where you don't have a computer near the device you are > trying to connect to, they act as the Serial to Network Proxy. In my case, > I have a computer nearby which runs linux and is my GPS disciplined NTP > server. I have purchased a RS422 to USB interface cable which will connect > the KS-24631 to my linux box. Now I just have to sort through all of the > information I have found and figure out just which app I need on the linux > box (likely socat) and which one on any of the other computers on my > network with which I may want to connect to the KS-24631. And of course, > how to configure them. > > cheers, Graham ve3gtc > > > > > On 2014-11-24 08:42, Jim Lux wrote: > >> On 11/24/14, 2:20 AM, Graham wrote: >> >>> Interesting. >>> >>> I have also been thinking that it might not be too difficult to >>> implement using Beaglebone Black, Raspberry PI, or even one or another >>> flavour of Arduino. Lots of possibilities from simple to not so simple. >>> >>> >>> >> The challenge is always trying to figure out what sort of protocol to use >> for encapsulating serial data in the Ethernet Stream. Do you send each >> character in its own UDP or TCP datagram? Do you batch them together and >> send a message every TBD milliseconds. >> >> Ideally, you'd like the protocol to match some commonly available client >> on the oth
Re: [time-nuts] rs-422 rs-232 to fast ethernet converter
There is a protocol for ending serial commands over telnet (tcp): RFC2217 See http://tools.ietf.org/html/rfc2217 A number of command line tools, like ser2net and netcat use the protocol. Some of the small serial servers support it and it can make using serial remotely tunneled over tcp seamless. On Mon, Nov 24, 2014 at 6:23 PM, Graham wrote: > > I have done a bit of searching and found that what I want to do is nothing > really new and their are several off the shelf applications which will work > just fine - linux and Windows based hence the mention of the Raspberry PI > and Beaglebone Black. Some of the higher end Arduinos (i.e. Yu) are capable > of running linux and Windows as well but it would be entirely possible to > roll you own using the lower end Arduinos as well. > > I found some answers rather quickly after I started searching for the > right things, for example Serial to Network Proxy. > > On Windows you could use a virtual serial port to do the redirecting from > com port to network and on linux there are several the one I found often > mentioned is socat. > > The little serial to fast ethernet boxes which I was finding would work in > the situations where you don't have a computer near the device you are > trying to connect to, they act as the Serial to Network Proxy. In my case, > I have a computer nearby which runs linux and is my GPS disciplined NTP > server. I have purchased a RS422 to USB interface cable which will connect > the KS-24631 to my linux box. Now I just have to sort through all of the > information I have found and figure out just which app I need on the linux > box (likely socat) and which one on any of the other computers on my > network with which I may want to connect to the KS-24631. And of course, > how to configure them. > > cheers, Graham ve3gtc > > > > > On 2014-11-24 08:42, Jim Lux wrote: > >> On 11/24/14, 2:20 AM, Graham wrote: >> >>> Interesting. >>> >>> I have also been thinking that it might not be too difficult to >>> implement using Beaglebone Black, Raspberry PI, or even one or another >>> flavour of Arduino. Lots of possibilities from simple to not so simple. >>> >>> >>> >> The challenge is always trying to figure out what sort of protocol to use >> for encapsulating serial data in the Ethernet Stream. Do you send each >> character in its own UDP or TCP datagram? Do you batch them together and >> send a message every TBD milliseconds. >> >> Ideally, you'd like the protocol to match some commonly available client >> on the other end. Sure, things like telnet exist, but does software that >> expects an actual serial port know how to use telnet instead? >> >> That said, there's plenty of example code out there for, example, the >> Arduino Ethernet. There's a telnet server that could easily be modified. >> >> > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] rs-422 rs-232 to fast ethernet converter
I have done a bit of searching and found that what I want to do is nothing really new and their are several off the shelf applications which will work just fine - linux and Windows based hence the mention of the Raspberry PI and Beaglebone Black. Some of the higher end Arduinos (i.e. Yu) are capable of running linux and Windows as well but it would be entirely possible to roll you own using the lower end Arduinos as well. I found some answers rather quickly after I started searching for the right things, for example Serial to Network Proxy. On Windows you could use a virtual serial port to do the redirecting from com port to network and on linux there are several the one I found often mentioned is socat. The little serial to fast ethernet boxes which I was finding would work in the situations where you don't have a computer near the device you are trying to connect to, they act as the Serial to Network Proxy. In my case, I have a computer nearby which runs linux and is my GPS disciplined NTP server. I have purchased a RS422 to USB interface cable which will connect the KS-24631 to my linux box. Now I just have to sort through all of the information I have found and figure out just which app I need on the linux box (likely socat) and which one on any of the other computers on my network with which I may want to connect to the KS-24631. And of course, how to configure them. cheers, Graham ve3gtc On 2014-11-24 08:42, Jim Lux wrote: On 11/24/14, 2:20 AM, Graham wrote: Interesting. I have also been thinking that it might not be too difficult to implement using Beaglebone Black, Raspberry PI, or even one or another flavour of Arduino. Lots of possibilities from simple to not so simple. The challenge is always trying to figure out what sort of protocol to use for encapsulating serial data in the Ethernet Stream. Do you send each character in its own UDP or TCP datagram? Do you batch them together and send a message every TBD milliseconds. Ideally, you'd like the protocol to match some commonly available client on the other end. Sure, things like telnet exist, but does software that expects an actual serial port know how to use telnet instead? That said, there's plenty of example code out there for, example, the Arduino Ethernet. There's a telnet server that could easily be modified. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] rs-422 rs-232 to fast ethernet converter
I you are really really dead set on building your own there are lots of chips available with varying levels of external parts needed. An economical and versatile solution is to use one of the digi TS-One or portserver TS terminal servers. They are a little pricey new, but, last time I needed some there were several on the 'Bay. I bought 5 for $75 last time. That was an incredible steal. A few positives for using them: 1. several of the models have jumper selection of rs232/rs422 so you don't need an extrernal level converter. 2. They have excellent and currently maintained support software for past and current OS's which among other things provides a 'virtual com port' driver which makes the ports on the remote terminal server appear as normal serial ports to the OS. 3. 2nd generation models provide the capability to use SSH and SSL to encrypt control and data streams for security. 4. You don't need to do any development work to start using them. you can start working on the more interesting aspects of your project instead of reinventing the wheel for several hours while you figure out the arcana of serial transmission. (been there, done that) digi also makes board level product for integration in customer products, but, I have not seen any for sale on the used market. Netburner makes pretty economical board level stuff too. don't know if they have any rs422/485 functionality. I generally avoid using wifi for anything where failure/unreliability would cost me time/money. having said that there are also several wifi and bluetooth modules that might serve your needs. the bluetooth serial modules I bought from seeed studios were cheap and seem to work well. they also have the advantage of maintained OS support of 'virtual com ports' so apps don't need any special knowledge of the serial hardware. Also, you shouldn't really need a fast ethernet port on the terminal server. A fast ethernet switch when connected to a stone-age 'regular' 10Mbps port should (after failing auto-negotiation) fall back to 10Mbps half duplex which is likely sufficient for a single or even several serial streams. Hope this is helpful to someone. Dale NV8U -Original Message- From: Jim Lux Sent: Monday, November 24, 2014 8:42 AM To: time-nuts@febo.com Subject: Re: [time-nuts] rs-422 rs-232 to fast ethernet converter On 11/24/14, 2:20 AM, Graham wrote: Interesting. I have also been thinking that it might not be too difficult to implement using Beaglebone Black, Raspberry PI, or even one or another flavour of Arduino. Lots of possibilities from simple to not so simple. The challenge is always trying to figure out what sort of protocol to use for encapsulating serial data in the Ethernet Stream. Do you send each character in its own UDP or TCP datagram? Do you batch them together and send a message every TBD milliseconds. Ideally, you'd like the protocol to match some commonly available client on the other end. Sure, things like telnet exist, but does software that expects an actual serial port know how to use telnet instead? That said, there's plenty of example code out there for, example, the Arduino Ethernet. There's a telnet server that could easily be modified. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] rs-422 rs-232 to fast ethernet converter
On 11/24/14, 2:20 AM, Graham wrote: Interesting. I have also been thinking that it might not be too difficult to implement using Beaglebone Black, Raspberry PI, or even one or another flavour of Arduino. Lots of possibilities from simple to not so simple. The challenge is always trying to figure out what sort of protocol to use for encapsulating serial data in the Ethernet Stream. Do you send each character in its own UDP or TCP datagram? Do you batch them together and send a message every TBD milliseconds. Ideally, you'd like the protocol to match some commonly available client on the other end. Sure, things like telnet exist, but does software that expects an actual serial port know how to use telnet instead? That said, there's plenty of example code out there for, example, the Arduino Ethernet. There's a telnet server that could easily be modified. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] rs-422 rs-232 to fast ethernet converter
Interesting. I have also been thinking that it might not be too difficult to implement using Beaglebone Black, Raspberry PI, or even one or another flavour of Arduino. Lots of possibilities from simple to not so simple. cheers, Graham ve3gtc On 2014-11-23 21:38, Neil Schroeder wrote: If you feel like building : http://www.ti.com/tool/tida-00226 You can integrate that further than a cots one On Sunday, November 23, 2014, Joseph Gray wrote: Didier has a good suggestion as to the serial to Wifi adapter. I may order one for my Z3801. Looking on Amazon, I see these two units that are more reasonably priced: http://www.amazon.com/Keynice-Ethernet-Intelligent-Communication-Wireless/dp/B00JTUVA0G/ref=pd_sim_sbs_e_1?ie=UTF8 http://www.amazon.com/Ethernet-Serial-RS232-RS485-Converter/dp/B00ATV2DX2/ref=pd_cp_pc_1 Joe Gray W5JG On Sun, Nov 23, 2014 at 11:59 AM, Graham > wrote: Thanks Didier, Good suggestions and I have been considering something similar. cheers, Graham ve3gtc On 2014-11-23 13:26, Didier Juges wrote: Graham, There are a number of WiFi to serial modules like the one I use on my Thunderbolt monitor: The Microchip WiFly RN-XV-171. Once configured (typically using a PC), they will present a TCPIP port (TCP or UDP) from which you can get and send data directly to the serial port. Alternately, you can use Digi XBee modules that work like wireless RS232 isolators. I use the XSC Pro 900 MHz for a number of projects, including data loggers that are out of WiFi range. You can get well over a mile in open space with those. They are limited to 19200 bauds at the most. Didier KO4BB On November 22, 2014 4:47:15 PM CST, Graham > wrote: I have been contemplating how I will would like to interface to the KS-23461 devices using rs-422. One option is a rs-422 to USB cable. Seems easy enough. But another option I keep stumbling across is a rs-422/rs-232 to fast ethernet such as: http://www.transition.com/TransitionNetworks/Products2/Family.aspx?Name=SDSFE3110-120 Frankly, I have no first hand knowledge or experience with these devices. First glance suggests that it might just be what I want - easy access to the KS-23461 ports through a connection to my local network without having a PC of some sort close by. So, any first hand experience with such devices? Good idea or bad? cheers, Graham ve3gtc ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] rs-422 rs-232 to fast ethernet converter
If you feel like building : http://www.ti.com/tool/tida-00226 You can integrate that further than a cots one On Sunday, November 23, 2014, Joseph Gray wrote: > Didier has a good suggestion as to the serial to Wifi adapter. I may > order one for my Z3801. Looking on Amazon, I see these two units that > are more reasonably priced: > > > http://www.amazon.com/Keynice-Ethernet-Intelligent-Communication-Wireless/dp/B00JTUVA0G/ref=pd_sim_sbs_e_1?ie=UTF8 > > > http://www.amazon.com/Ethernet-Serial-RS232-RS485-Converter/dp/B00ATV2DX2/ref=pd_cp_pc_1 > > Joe Gray > W5JG > > > On Sun, Nov 23, 2014 at 11:59 AM, Graham > > wrote: > > Thanks Didier, > > > > Good suggestions and I have been considering something similar. > > > > cheers, Graham ve3gtc > > > > > > On 2014-11-23 13:26, Didier Juges wrote: > >> > >> Graham, > >> > >> There are a number of WiFi to serial modules like the one I use on my > >> Thunderbolt monitor: The Microchip WiFly RN-XV-171. Once configured > >> (typically using a PC), they will present a TCPIP port (TCP or UDP) from > >> which you can get and send data directly to the serial port. > >> > >> Alternately, you can use Digi XBee modules that work like wireless RS232 > >> isolators. I use the XSC Pro 900 MHz for a number of projects, including > >> data loggers that are out of WiFi range. You can get well over a mile in > >> open space with those. They are limited to 19200 bauds at the most. > >> > >> Didier KO4BB > >> > >> On November 22, 2014 4:47:15 PM CST, Graham > wrote: > >>> > >>> I have been contemplating how I will would like to interface to the > >>> KS-23461 devices using rs-422. > >>> > >>> One option is a rs-422 to USB cable. Seems easy enough. > >>> > >>> But another option I keep stumbling across is a rs-422/rs-232 to fast > >>> ethernet such as: > >>> > >>> > >>> > http://www.transition.com/TransitionNetworks/Products2/Family.aspx?Name=SDSFE3110-120 > >>> > >>> Frankly, I have no first hand knowledge or experience with these > >>> devices. First glance suggests that it might just be what I want - easy > >>> > >>> access to the KS-23461 ports through a connection to my local network > >>> without having a PC of some sort close by. > >>> > >>> So, any first hand experience with such devices? Good idea or bad? > >>> > >>> cheers, Graham ve3gtc > >>> > >>> ___ > >>> time-nuts mailing list -- time-nuts@febo.com > >>> To unsubscribe, go to > >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>> and follow the instructions there. > > > > > > ___ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] rs-422 rs-232 to fast ethernet converter
Didier has a good suggestion as to the serial to Wifi adapter. I may order one for my Z3801. Looking on Amazon, I see these two units that are more reasonably priced: http://www.amazon.com/Keynice-Ethernet-Intelligent-Communication-Wireless/dp/B00JTUVA0G/ref=pd_sim_sbs_e_1?ie=UTF8 http://www.amazon.com/Ethernet-Serial-RS232-RS485-Converter/dp/B00ATV2DX2/ref=pd_cp_pc_1 Joe Gray W5JG On Sun, Nov 23, 2014 at 11:59 AM, Graham wrote: > Thanks Didier, > > Good suggestions and I have been considering something similar. > > cheers, Graham ve3gtc > > > On 2014-11-23 13:26, Didier Juges wrote: >> >> Graham, >> >> There are a number of WiFi to serial modules like the one I use on my >> Thunderbolt monitor: The Microchip WiFly RN-XV-171. Once configured >> (typically using a PC), they will present a TCPIP port (TCP or UDP) from >> which you can get and send data directly to the serial port. >> >> Alternately, you can use Digi XBee modules that work like wireless RS232 >> isolators. I use the XSC Pro 900 MHz for a number of projects, including >> data loggers that are out of WiFi range. You can get well over a mile in >> open space with those. They are limited to 19200 bauds at the most. >> >> Didier KO4BB >> >> On November 22, 2014 4:47:15 PM CST, Graham wrote: >>> >>> I have been contemplating how I will would like to interface to the >>> KS-23461 devices using rs-422. >>> >>> One option is a rs-422 to USB cable. Seems easy enough. >>> >>> But another option I keep stumbling across is a rs-422/rs-232 to fast >>> ethernet such as: >>> >>> >>> http://www.transition.com/TransitionNetworks/Products2/Family.aspx?Name=SDSFE3110-120 >>> >>> Frankly, I have no first hand knowledge or experience with these >>> devices. First glance suggests that it might just be what I want - easy >>> >>> access to the KS-23461 ports through a connection to my local network >>> without having a PC of some sort close by. >>> >>> So, any first hand experience with such devices? Good idea or bad? >>> >>> cheers, Graham ve3gtc >>> >>> ___ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] rs-422 rs-232 to fast ethernet converter
Thanks Didier, Good suggestions and I have been considering something similar. cheers, Graham ve3gtc On 2014-11-23 13:26, Didier Juges wrote: Graham, There are a number of WiFi to serial modules like the one I use on my Thunderbolt monitor: The Microchip WiFly RN-XV-171. Once configured (typically using a PC), they will present a TCPIP port (TCP or UDP) from which you can get and send data directly to the serial port. Alternately, you can use Digi XBee modules that work like wireless RS232 isolators. I use the XSC Pro 900 MHz for a number of projects, including data loggers that are out of WiFi range. You can get well over a mile in open space with those. They are limited to 19200 bauds at the most. Didier KO4BB On November 22, 2014 4:47:15 PM CST, Graham wrote: I have been contemplating how I will would like to interface to the KS-23461 devices using rs-422. One option is a rs-422 to USB cable. Seems easy enough. But another option I keep stumbling across is a rs-422/rs-232 to fast ethernet such as: http://www.transition.com/TransitionNetworks/Products2/Family.aspx?Name=SDSFE3110-120 Frankly, I have no first hand knowledge or experience with these devices. First glance suggests that it might just be what I want - easy access to the KS-23461 ports through a connection to my local network without having a PC of some sort close by. So, any first hand experience with such devices? Good idea or bad? cheers, Graham ve3gtc ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] rs-422 rs-232 to fast ethernet converter
Graham, There are a number of WiFi to serial modules like the one I use on my Thunderbolt monitor: The Microchip WiFly RN-XV-171. Once configured (typically using a PC), they will present a TCPIP port (TCP or UDP) from which you can get and send data directly to the serial port. Alternately, you can use Digi XBee modules that work like wireless RS232 isolators. I use the XSC Pro 900 MHz for a number of projects, including data loggers that are out of WiFi range. You can get well over a mile in open space with those. They are limited to 19200 bauds at the most. Didier KO4BB On November 22, 2014 4:47:15 PM CST, Graham wrote: >I have been contemplating how I will would like to interface to the >KS-23461 devices using rs-422. > >One option is a rs-422 to USB cable. Seems easy enough. > >But another option I keep stumbling across is a rs-422/rs-232 to fast >ethernet such as: > >http://www.transition.com/TransitionNetworks/Products2/Family.aspx?Name=SDSFE3110-120 > >Frankly, I have no first hand knowledge or experience with these >devices. First glance suggests that it might just be what I want - easy > >access to the KS-23461 ports through a connection to my local network >without having a PC of some sort close by. > >So, any first hand experience with such devices? Good idea or bad? > >cheers, Graham ve3gtc > >___ >time-nuts mailing list -- time-nuts@febo.com >To unsubscribe, go to >https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >and follow the instructions there. -- Sent from my Motorola Droid Razr HD 4G LTE wireless tracker while I do other things. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] rs-422 rs-232 to fast ethernet converter
Thanks all for the replies. After a couple of replies and the reference to "terminal server" a light bulb came on and put it all into perspective, including a vague recollection of some previous postings. cheers, Graham ve3gtc On 2014-11-22 19:59, Chris Albertson wrote: On Sat, Nov 22, 2014 at 2:47 PM, Graham wrote: I have been contemplating how I will would like to interface to the KS-23461 devices using rs-422. One option is a rs-422 to USB cable. Seems easy enough. But another option I keep stumbling across is a rs-422/rs-232 to fast ethernet such as: They are called a "terminal server". It's a box with some serial ports and one Ethernet port. You access each port via "telent protocol". You can buy these surplus on eBay or you can MAKE one very easy. All you need is any kind of small computer, a 10 year old notebook PC, a Rasbury Pi, or whatever, so long as it has both a network and a serial port. Run a Telnet SSH server on this and you are on-line and can access the device from any place on Earth.I would not buy a small computer for this but if you have one already then it is free. Telnet is very old. I remember using it first in the late 1970's back when the "Internet" was still called the "Darpa Net" and it only connected a few dozen computers. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] rs-422 rs-232 to fast ethernet converter
On Sat, Nov 22, 2014 at 2:47 PM, Graham wrote: > I have been contemplating how I will would like to interface to the > KS-23461 devices using rs-422. > > One option is a rs-422 to USB cable. Seems easy enough. > > But another option I keep stumbling across is a rs-422/rs-232 to fast > ethernet such as: > > They are called a "terminal server". It's a box with some serial ports and one Ethernet port. You access each port via "telent protocol". You can buy these surplus on eBay or you can MAKE one very easy. All you need is any kind of small computer, a 10 year old notebook PC, a Rasbury Pi, or whatever, so long as it has both a network and a serial port. Run a Telnet SSH server on this and you are on-line and can access the device from any place on Earth.I would not buy a small computer for this but if you have one already then it is free. Telnet is very old. I remember using it first in the late 1970's back when the "Internet" was still called the "Darpa Net" and it only connected a few dozen computers. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] rs-422 rs-232 to fast ethernet converter
Hi If you go the auction site route, be careful of the boxes that have a password on them that can not easily be reset. Back when they were new, a trip back to the factory would reset the password. These days - no more support on the older boxes. The same caution applies to some of the older Cisco boxes. Most times, a quick look at the manual will bring up a warning if it’s a a box with a “forever” password. That said, these are really boring boxes to watch. Once they are set up, they loose their “see what it’s doing” appeal pretty fast. The exception to that might be the status lights. I’d bet the as yet un-traced out opto isolator outputs would help with a remote alarm of some sort. Bob > On Nov 22, 2014, at 6:25 PM, Brent Gordon wrote: > > I haven't used this particular model. I have used similar units from > Systech, purchased on eBay for less than $30 US. They work quite well. Some > of them have selectable RS-232/RS-485 outputs. I've successfully used both > types of outputs. > > The only problem I've had was the initial configuration. The trick is to > configure the serial ports as a "Reverse Telnet" server. > > Search eBay for "terminal server". You can also search the Time Nuts list, > they were discussed a few years ago. > > Brent > > On 11/22/2014 3:47 PM, Graham wrote: >> I have been contemplating how I will would like to interface to the >> KS-23461 devices using rs-422. >> >> One option is a rs-422 to USB cable. Seems easy enough. >> >> But another option I keep stumbling across is a rs-422/rs-232 to fast >> ethernet such as: >> >> http://www.transition.com/TransitionNetworks/Products2/Family.aspx?Name=SDSFE3110-120 >> >> >> Frankly, I have no first hand knowledge or experience with these >> devices. First glance suggests that it might just be what I want - easy >> access to the KS-23461 ports through a connection to my local network >> without having a PC of some sort close by. >> >> So, any first hand experience with such devices? Good idea or bad? >> >> cheers, Graham ve3gtc >> > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] rs-422 rs-232 to fast ethernet converter
I haven't used this particular model. I have used similar units from Systech, purchased on eBay for less than $30 US. They work quite well. Some of them have selectable RS-232/RS-485 outputs. I've successfully used both types of outputs. The only problem I've had was the initial configuration. The trick is to configure the serial ports as a "Reverse Telnet" server. Search eBay for "terminal server". You can also search the Time Nuts list, they were discussed a few years ago. Brent On 11/22/2014 3:47 PM, Graham wrote: I have been contemplating how I will would like to interface to the KS-23461 devices using rs-422. One option is a rs-422 to USB cable. Seems easy enough. But another option I keep stumbling across is a rs-422/rs-232 to fast ethernet such as: http://www.transition.com/TransitionNetworks/Products2/Family.aspx?Name=SDSFE3110-120 Frankly, I have no first hand knowledge or experience with these devices. First glance suggests that it might just be what I want - easy access to the KS-23461 ports through a connection to my local network without having a PC of some sort close by. So, any first hand experience with such devices? Good idea or bad? cheers, Graham ve3gtc ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] rs-422 rs-232 to fast ethernet converter
This kind of device is great, works fine, but hold on to your wallet! I'd look on epaY for something like this... If bought new, it'll cost more than the KS... Don Graham > I have been contemplating how I will would like to interface to the > KS-23461 devices using rs-422. > > One option is a rs-422 to USB cable. Seems easy enough. > > But another option I keep stumbling across is a rs-422/rs-232 to fast > ethernet such as: > > http://www.transition.com/TransitionNetworks/Products2/Family.aspx?Name=SDSFE3110-120 > > Frankly, I have no first hand knowledge or experience with these > devices. First glance suggests that it might just be what I want - easy > access to the KS-23461 ports through a connection to my local network > without having a PC of some sort close by. > > So, any first hand experience with such devices? Good idea or bad? > > cheers, Graham ve3gtc > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > -- "The power of accurate observation is commonly called cynicism by those who have not got it." -George Bernard Shaw Dr. Don Latham AJ7LL Six Mile Systems LLC 17850 Six Mile Road Huson, MT, 59846 mail: POBox 404 Frenchtown MT 59834-0404 VOX 406-626-4304 Skype: buffler2 www.lightningforensics.com www.sixmilesystems.com ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] rs-422 rs-232 to fast ethernet converter
I have been contemplating how I will would like to interface to the KS-23461 devices using rs-422. One option is a rs-422 to USB cable. Seems easy enough. But another option I keep stumbling across is a rs-422/rs-232 to fast ethernet such as: http://www.transition.com/TransitionNetworks/Products2/Family.aspx?Name=SDSFE3110-120 Frankly, I have no first hand knowledge or experience with these devices. First glance suggests that it might just be what I want - easy access to the KS-23461 ports through a connection to my local network without having a PC of some sort close by. So, any first hand experience with such devices? Good idea or bad? cheers, Graham ve3gtc ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
