# Xbee API frame compaitibility between Xbee 900 and Xbee 802.15.4

**URL:** <https://forums.digi.com/t/xbee-api-frame-compaitibility-between-xbee-900-and-xbee-802-15-4/20159>\
**Category:** XBee - 802.15.4\
**Tags:** xbee-900hp, xbee-api-mode, api-packet, 802-15-4, xbee\
**Created:** [January 10, 2019, 1:29pm UTC](https://forums.digi.com/t/xbee-api-frame-compaitibility-between-xbee-900-and-xbee-802-15-4/20159 "2019-01-10T13:29:13Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![atomicpwr](https://avatars.discourse-cdn.com/v4/letter/a/a183cd/32.png) [@atomicpwr](https://forums.digi.com/u/atomicpwr)\
**Post date:** [January 10, 2019, 1:29pm UTC](https://forums.digi.com/t/xbee-api-frame-compaitibility-between-xbee-900-and-xbee-802-15-4/20159/1 "2019-01-10T13:29:13Z")

</div>

Hey I am trying to develop a system which allows the user to easily swap Pro S3B Xbee with Pro S2C modules(with 802.15.4 firmware) without altering the program at all or very little. To get there I am using API frames.

I was able to get 2 Pro S3B communicating with API frames 0x10(TX request) by setting the last 2 bytes to FF FF for broadcast mode (through XCTU).

Using XCTU I tried sending the same 0x10 frame from one S2C module to another without success. However I was able to send 0x00(Tx request with 64 bit address). I think my configuration settings on the modules is off but before I dig into them more I want to know:

Can S2C modules accept 0x10 frames? What configuration settings should I change on the S2C to make this work?

Hardware family number(read from the bottom of the xbees)  
S3B: XBP9B-XCST  
S2C: XBP24C7SIT