XBee-Pro stops transmitting

I have two XBee-Pro modules XBP24-ACI-001,in both modules
is loaded firmware 10CD. X-CTU reads them as
Modem: XBP24 Function Set:XBEE PRO 802.15.4

the first module is set to broadcast transmit.

I made a test program to meassure overal speed and packet loos. The settings are:
115200,8,N,1, Hardware Flow
Command Sequence Character is set to 0x01

When I transmit data in range 0x02 to 0x7F all is working.
But when I start to transmit data in range 0x80 to 0xFF after some time the transmitter stops to transmit. It takes data from UART but no RF is going out. When I restart the transmitter (Power OFF,Power ON). It start to work , but the same happens again. Sometimes after 5 seconds, sometimes after a minute.

Is this behaviour normal? Can I transmit only data to 0x7F?

Short answer: at 115200 baud, try using 2 stop bits.

Longer answer: check back in this forum for the topic “Xbee Series 1 not working well at 115200 baud”. You’ll find the stop bit solution mentioned there, as well as a few other ideas.

Hope that helps.

thanks for the suggestion :slight_smile:
after setting the port to 2 stop bits all is working as expected.