Hi,
Most likely it's wiring problem, or incorrect comms settings on the host PC. The streams device 'No reply' message can also occur when there is nothing connected.
Make sure the wiring is correct. It's possible the wiring is different for the serial->ethernet converter. (eg. pins 2 and 3 swapped, or something similar.)
You could also try also using something like 'minicom' to test it (from which you can easily set the baud rate, etc).
Cheers,
Matt
On Aug 19, 2013, at 9:30 AM, Yasemin Barutçu <[email protected]> wrote:
> Hello,
>
> I've been trying to connect to my machine by RS232.
> I use streamDevice and Asyn Module.
>
> When we send command "*IDN?", we expect to get "THERMO OK" from the machine.
> I try the same connection on TCP/IP. I used serial to ethernet converter and communicated with the machine. No problem occured. But when I eliminated the converter and directly connected to the PC on RS232 port, I got the following error when I send the command.
>
> I guess the problem is about response time. How can I configure the response time? Or if it is not response time problem, how can I fix it?
> ERROR:
> "2013/08/19 16:23:15.340949 thermoConn IDN: No reply from device within 1000 ms"
>
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