X-BEE 1 (PROBLEMS WITH REMOTE COMMAND RESPONSE)

XBee & XBee Gateway XBee - 802.15.4
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1

Dear Friends,

I´ve got two XBee serie 1 and I´m working in API mode.

From time to time, when I send a data the acknowledge received is wrong. An example. I send a remote AT command (0x17) and I receive a right remote comand response (0x97), but, sometimes the ack is wrong or even I don´t receive any ack.

An example:

I send this package
7E 00 10 17 01 00 00 00 00 00 00 00 00 00 01 01 44 35 05 67

And sometimes I receive (which I think is correct):
7E 00 0F 97 01 00 13 A2 00 40 AA 5E A0 00 01 44 35 00 50

However, other times I receive:
7E 00 0F 97 01 00 00 00 00 00 00 00 00 00 01 44 35 04 EA

And in many other times I don´t receive any response. But even in the last two cases I know that the package was sent and received because in the other Xbee DIO5 changes to Do High.

Do you know what is el problem?

Thanks a lot for your help.

Mario
Madrid (spain)
anroza@ono.com

2

I suspect part of the problem is if you are using 16 bit addressing vs 64 bit addressing on the receiving side. As for why you do not get a response back, that would have to be determined by other means.

3

First, thanks for your answer.

I have tried to use 64 bit but, unfortunately, it doesn´t work, i.e., sometimes Works, othertimes the ack is wrong and another times there is not any ack.

Do you suggest any other possibility?

thank you very much for your valuable help ¡

Best regars
Mario
Madrid (Spain)

4

What are you putting in for the 64 bit address?

5

Hello,

First, I tried to send this package (I was working with 16bits adress):

7E 00 10 17 01 00 00 00 00 00 00 00 00 00 01 01 44 35 05 67

And de Xbee which has to receive the message has:
DH=0000 and MY=0001 (both xbees working in API mode)

then after what you told me, i tried sending this package:

7E 00 10 17 01 00 13 A2 00 40 AA 5E B4 FF FE 01 44 35…

And the Xbee, which has to receive the message, has:
DH=FFFE and MY=FFFE (both xbees working in API mode). So, answering to your question I put for de 64 bit adress: 0013A20040AA5EB4

I think both options should work correctly. And sometimes I receive the ACK correct, but other times (without change nothing) I get a ACK with error and other times I get no ACK.

6

I forgot it, XD

Thank you very much for your help ¡

Best regards
Mario
Madrid (Spain)

7

Don’t forget to increment the frame counter this way you know which TX status frame is for which 0x17 API frame.

8

Dear friend,
What do you mean frame counter.
I´m sorry but I don´t understand your answer.
Please, could you explain it with more detail.
Thanks a lot and best regards
Mario

9

Byte 4 in your TX request packet. It is the byte just after the frame type indicator (0x17).