XBee series 1 vs Series 2 and IMU problem

Hi all,

I am trying to get a CHR-UM6 IMU to communicate through our Xbee modems and am having trouble.

FIrst off, I CAN get it to communicate with the XBee Pro series 2 modems.

However, we want to be able to use our more numerous Xbee Pro Series 1 modems.

I have successfully gotten both series 1 and series 2 to communicate with their respective units, but for some reason, the CHR-UM6 only likes the series 2.

From the CHR-UM6 software (CH Robotics interface v2.1.0), it keeps giving me the error of “Received packet with bad checksum. Packet discarded.”

I do not get this error when using the series 2.

Does anyone have any suggestions on how to get around this error with the Series 1 Xbee’s?

Thanks