I just received the RS 232 Modem and a 0-10V Receiver sensor. The only documentation I’m finding online is for an older version of the modem, and perhaps the factory thought they sent out that version because they included a db9 cable when the modem I ordered has terminal connections for comms (no db9 port).
Is there any up-to-date setup documentation for the black version of the RS232 Modem with terminal connections? I’ve tried to connect to the modem using Alpha Station, but I’m getting no comms using both DTE and DCE connections (via an RS232-USB converter since the PC I’m using has no serial port). Using 115.2k and 8N1, but no comms to the modem. Any advice is appeciated.
And I should add that I’ve connected the modem to the PC and pulled up a terminal session expecting to see the raw hex packets come through, as online documentation has indicated would be the case, but still no comms there. I’ve also tried to connect to the modem using XCTU, but no comms. And I’ve tried both of those approaches again using a different PC with a native serial port (ruling out the serial/USB converter I was using before), and still no change. Lastly, I’ve tried to communicate with the modem via a PLC automation controller, but still no comms.
hi,
the default baudrate is 9600.
for a quick test it will recommend connecting to usb to serial and checking incoming data.
Still nothing. Is there no documentation for this modem? The only documents I’m finding online say that default baud is 115.2, but that’s for the white modem with the db9 connections (link).
I’ve referenced the modem section of this document link, and downloaded FTDI drivers based on guidance from this document link. My COM port comes up fine in Device Manager, but neither AlphaStation nor XCTU can see the modem.
Does the modem need to be in config mode? If so, what’s the behavior of the LEDs? If I press Reset and then Config within 1 second and hold Config down for more than 15s, there is no indication that I’ve entered config mode. What’s the process for a factory reset?
No default baudrate is 9600.
default setting
if you have a minute we can hop on zoom call
Yes sorry, I did already try 9600. We don’t use Zoom, just Skype or Webex. But the modem is being tested–and would be deployed on–a private, closed network with no access to the web, so I won’t be able to share the screen that I’m testing it on. If you have specific screens you want me to screenshot then I can upload them here. Or if you have a set of troubleshooting steps that would be helpful also.
we can have a webex call if that works.
what serial terminal are you using for testing ?
can you share pictures of your setup ?
Drawing1.pdf (131.0 KB)
Attached is some relevant screenshots of the COM port settings, and a wiring diagram of the connections I’m using. I’ve used Putty and TeraTerm with 9600 and 115200, but also AlphaStation where I always get the Unable to Communicate with Modem error. Also tried XCTU which provides the scanning function across multiple COM port settings at once, and that can’t find anything.
swap Tx and Rx wire.
Also it wont work with alpha station
test with a serial terminal like teraterm
Still not working. How do you configure the modem (change baud, etc) if it doesn’t work with Alpha Station?
using node red.
what serial terminal tool are you using ?
I’ve tried Putty, TeraTerm, and PowerTerm.
once the port is open in putty, hit reset on the sensor and see what you get
make sure sensor and modem both have antenna
