I picked up a serial-to-USB adaptor and installed the drivers onto my Windows 7 machine. It now shows up in my Device Manager under Ports, Prolific USB-to-Serial Comm Port (COM5). However when I fire up PuTTY and choose 'serial' and enter COM5 the resulting terminal window simply hangs.
Active5 years, 2 months ago
I'm trying to establish a serial connection to a peripheral from my PC's RS-232 port. Pretty simple stuff, and I've had not trouble doing it with countless peripherals before. And yet when I configure PuTTY to the right baud rate, stop bits, etc. I'll type in '*IDN?', press enter, and the unit won't reply. After going over my settings over and over again, I decided to try another terminal program, Termite. This time it worked like a charm. What puzzles me, and what I'm trying to figure out by posting this question, is why Termite would work when PuTTY did not despite the fact that they both have the same settings.
PuTTY:http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
Termite:http://www.compuphase.com/software_termite.htm
EDIT: I now tried Tera Term as well, and it works. So PuTTY is the odd one out.
SharpHawk
SharpHawkSharpHawk
1 Answer
Had similar problem,
I had to check in the settings under Terminal => local echo , force On
A bit too late but hopefully will help someone else.
user998888user998888
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OK, Details;
I'm trying to communicate to the console ports on several Cisco switches and routers. I my computers do not have a 9pin Dconnector that will connect to a standard Cisco console cable, and the Cisco devices do not have USB.
Therefore, I purchased a Belkin USB to DB9 converter for serial connections. It's nice because I can see LEDs light up on it when it transfers data (link, TX, RX).
This has worked for a while. I'm using a home built computer using an AMD Athlon II comptuer with four USB ports comming off the motherboard. It's running XP OS.
Microsoft Windows XP
Professional
Version 2002
Service Pack 3
Computer:
AMD Athlon II X3 435
Processor
2.91GHz 1.75GB of RAM
This has been working for a year or so, and right in the middle of running it just stopped working and was hung. After that, when I use the Device Manager to list the 'Ports (COM & LPT)' it now only shows COM1 and LPT1.
I get the above error message when ever I use 'Putty' software to do the serial terminal emulation.
Not sure if it was my Belkin device, Computer, or OS.
1) So I first tried rebooting the computer, with no success.
2) I tried connecting to another router with no change.
3) Next rebooted the orginal router, no change.
4) Rebooted the laptop, no change.
I searched the internet for this, and the best advice was to manually install the com port. I tried this, but it instead installed COM4 and COM5. I tried anyway, but uninstalled when done.
Is Putty Open Source
How does the COM3 port get built? Should it always show available, or does it build the interface when a device is plugged in?
Well, I haven't messed with it over the weekend, tried again today, and now it's working when I plugged in the belkin USB to Serial DB9 connector. It recognized the device and gave a 'bong' and it appeared. Therefore I susspect that it is built when the device is plugged in, and torn down when it is disconnected. Not sure why it's now working....but now i don't trust when it may go down of back up. I'm sure there is a logical explaination, but not any help from the MS OS.....as usual.
Putty Serial Settings Windows 10
Maybe the Belkin device is flakey, but unlikely due to the number of times I unplugged and replugged......not sure.
Putty Serial Download
I then grabbed a Laptop running Windows 7 and connected to it's USB port, and running putty software, and it started working.
Putty Does Not Open Serial Port
Then, in about 5 minutes, it hung up as well, and I could not see the COM3 Port.
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