XBEE+Arduino+CoolTerm problem

[nasymt]

Hi,
I'm trying to send data between Arduino MEGA and my macbook air by XBee Series 1 wireless kit (https://www.sparkfun.com/products/11445) .

My environments.
[Macbook Air side]
-Macbook Air OSⅩ10.8.4
-XBee Explorer
-XBee Modules
[Arduino side]
-Arduino MEGA
-XBee Shield
-XBee Modules

Then I'm trying to use CoolTerm to configure the XBees,and I typed "+++" .
But CoolTerm didn't return "OK" message.
When I use ZTerm,this problem is also occurred.Any hint?

I'm sorry for my poor English.
Thanks in advance.

[Franklin97355]

I don't know if there is an X-CTU for the mac but you need to update the firmware on the xbees and configure (or check the configuration). If you can't communicate with them all else is futile.

[waltr]

Recheck the setting in your terminal program. Try different Baud rates, Stop bits, and data bits.
Without X-CTU it will be harder to determine what may be wrong.
Do you have (or can borrow) a Windows PC to install X-CTU on?

Adafruit does not sell an XBee Explorer board.
It would be much better to post on SparkFun's forum since its more likely someone there know about this board.

[nasymt]

Thank you for all your quick response.

I tried use X-CTU on the windows PC and I failed to communicate each other again.
But when I change XBee S1 into XBee S2 module,I succeed to communicate them.
I don't know why XBee S1 cannot work.But it is ok.
Thank you for your time.

[Franklin97355]

But when I change XBee S1 into XBee S2 module,I succeed to communicate them.

By this do you mean you change to different physical modules or do you just change the code?