Adhavan ManickamWe got it working, turns out I had a straight through RS232 cable instead of a crossover (pins 2-3 & 3-2). And our Arduino RS232 shield is not behaving as it should. Changing out those 2 components seem to fix the problem. Now I’ll have to figure out how to display the data in ASCII vs HEX on the Node-Red app.
Thanks for the help Brandon & Bryan.
Adhavan ManickamBrandon, Yes I did look at them both and that’s how I figured how to set up the AT commands to read serial. I even tried varying the WI, WD & WTO times. But the issue is when I hook up the output from arduino RS232 shield – which is putting out data (verified by reading the serial port on a terminal 115200 8n1) – the debug log says that there is no data coming from the serial port. But if I manually enter data I am receiving it on the conduit.
Any other suggestions? Thanks.
Adhavan ManickamBrandon,
Thanks for responding. I tried with another cable known to work, but not able to connect. I still do not see the ethernet port active (no LEDs on). So, cable is not the issue. Also I tried connecting to the debug interface but am not getting anywhere, not able to log in using ssh from default terminal or any other terminal applications (coolterm). I suspect this could be a hardware issue. Please contact me at adhavan.manickam@fluidvision.co to discuss this issue further. Thanks.
