# No data transfer back to Router only one direction to Coordinator

**URL:** <https://forums.digi.com/t/no-data-transfer-back-to-router-only-one-direction-to-coordinator/20249>\
**Category:** XBee & XBee Gateway\
**Tags:** xbee-api-mode\
**Created:** [February 12, 2019, 2:57pm UTC](https://forums.digi.com/t/no-data-transfer-back-to-router-only-one-direction-to-coordinator/20249 "2019-02-12T14:57:38Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![vaultstudio](https://avatars.discourse-cdn.com/v4/letter/v/8dc957/32.png) [@vaultstudio](https://forums.digi.com/u/vaultstudio)\
**Post date:** [February 12, 2019, 2:57pm UTC](https://forums.digi.com/t/no-data-transfer-back-to-router-only-one-direction-to-coordinator/20249/1 "2019-02-12T14:57:38Z")

</div>

I have two Xbee Pro X3B’s setup (Router, Coordinator)that I can transfer data both direction in AT mode but when in API mode only R to C? What am I missing?

---

<div class="post-metadata">

**Author:** ![DystopianFerret](https://avatars.discourse-cdn.com/v4/letter/d/71e660/32.png) [@DystopianFerret](https://forums.digi.com/u/DystopianFerret)\
**Post date:** [February 13, 2019, 5:44pm UTC](https://forums.digi.com/t/no-data-transfer-back-to-router-only-one-direction-to-coordinator/20249/2 "2019-02-13T17:44:24Z")

</div>

Are you putting your Coordinator in API mode? API mode changes the way the UART processes data, any input must be packetized into API frames with the proper formatting.

---

<div class="post-metadata">

**Author:** ![vaultstudio](https://avatars.discourse-cdn.com/v4/letter/v/8dc957/32.png) [@vaultstudio](https://forums.digi.com/u/vaultstudio)\
**Post date:** [February 19, 2019, 12:09pm UTC](https://forums.digi.com/t/no-data-transfer-back-to-router-only-one-direction-to-coordinator/20249/3 "2019-02-19T12:09:39Z")

</div>

Yes, Router and Coordinator both are in API mode that didn’t work.

I got it working by changing CE on the Coordinator to “indirect Msg Poller” instead of other Coordinator settings. I don’t understand why at this point but open to information on this selection.

My main objective is to have the Xbee’s to communicate in a bi-directional manner.

---

<div class="post-metadata">

**Author:** ![vaultstudio](https://avatars.discourse-cdn.com/v4/letter/v/8dc957/32.png) [@vaultstudio](https://forums.digi.com/u/vaultstudio)\
**Post date:** [February 22, 2019, 4:55pm UTC](https://forums.digi.com/t/no-data-transfer-back-to-router-only-one-direction-to-coordinator/20249/4 "2019-02-22T16:55:06Z")

</div>

Why??

I got it working by changing CE on the Coordinator to “indirect Msg Poller” instead of other Coordinator settings. I don’t understand why at this point but open to information on this selection.