Using XT09-PKI-R with a serial to USB converter

XBee & XBee Gateway XTend
1

Hi,

I am trying to use a XT09-PKI-R with a Prolific PL2303 serial-USB converter on the laptop side. My setup is as follows:

Laptop -> PL2303 -> XT09 ~ Wireless ~ XT09 -> Actuator

The X-CTU software recognizes the COM port for the Prolific device. It shows up in PC Settings > Com Port Setup as ‘Prolific USB-to-serial Comm. (COM4)’. Other settings are unchanged from default: Baud 9600 … Flow Control NONE … Data Bits 8 … Parity NONE … Stop Bits 1.

However, when I do a Test/Query for this setup, I get an error message window : Unable to communicate with modem.

I have to use the serial-USB since I don’t have a serial port on my laptop. I wanted to check if someone else on this forum has had a similar problem and how it could be resolved.

Thanks!
Ninad.

2

are you sure the baud rate on the modem you are trying to connect to is set to 9600? confirm the modem config.

I use a USB to Serial cable with no issues.

3

Thank you, you were right that the modem was not set to the correct baud rate. For the benefit of others who might be facing the same issue, I had to go to X-CTU > Modem Configuration, select the right modem from the drop-down list, and set the correct baud rate. Then, I did a Write to the modem and the new configuration was established.

However, I still am facing an issue with the setup. Once the modems are set up, can I simply send my serial commands through a C++ program which was earlier working with a wired connection? That is:

Earlier: PC —command—> USB to serial -> Actuator
Now: PC —command—> USB to serial ->XT-09 ~ Wireless ~ XT-09 -> Actuator

are both equivalent? Or do I need to have my C++ program set up differently to account for the serial wireless link?

Thanks again for your help!
Ninad.