# XBee only responds with the chars i send

**URL:** <https://forums.digi.com/t/xbee-only-responds-with-the-chars-i-send/12647>\
**Category:** XBee - Zigbee\
**Tags:** uart, xctu, xbee\
**Created:** [March 10, 2014, 8:50am UTC](https://forums.digi.com/t/xbee-only-responds-with-the-chars-i-send/12647 "2014-03-10T08:50:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![annell](https://avatars.discourse-cdn.com/v4/letter/a/41988e/32.png) [@annell](https://forums.digi.com/u/annell)\
**Post date:** [March 10, 2014, 8:50am UTC](https://forums.digi.com/t/xbee-only-responds-with-the-chars-i-send/12647/1 "2014-03-10T08:50:02Z")

</div>

I have 3 Xbee S2 ZB modules that I’m trying to configure, without any luck (its the same result with all the modules).

I have them connected with my pc through a seriell cable and communicate using X-CTU.

When i do Test / Querie i get:  
"  
Communication with modem… OK  
Modem firmware version = ATVR

Modem type = Name unknown (ID = 5183491234791) (some random number)

Serial Number = ATSH  
ATSL  
"  
So it basically thinks the modem responds with the serial number, but it only responds with the commands that is sent.

And when i try to issue commands on to the modem its the same thing, it only responds with what i send in, and never anything else.

Baud rate is 9600, Data bits 8, None parity, Stop bits 1. I’m using the newest FTDI drivers, I’m doing this on a virtual PC windows 7 that is running on a Mac.

My circuit looks like this:  
Pin 1 got +3v  
Pin 2 Uart communication  
Pin 3 Uart communication

Pin 10, GND

The rest is left untouched.

I really don’t think there is a problem with my serial communication. Because I’m using the same setup when connecting to a micro controller, and i don’t have any problems communicating with it from the computer and vice versa.

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<div class="post-metadata">

**Author:** ![mvut](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/mvut/32/31_2.png) [@mvut](https://forums.digi.com/u/mvut)\
**Post date:** [May 6, 2014, 3:13pm UTC](https://forums.digi.com/t/xbee-only-responds-with-the-chars-i-send/12647/2 "2014-05-06T15:13:56Z")

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What kind of cable are you using and what voltage level does it run at?