# XBee pro s2b and XBee peo s2c communication

**URL:** <https://forums.digi.com/t/xbee-pro-s2b-and-xbee-peo-s2c-communication/17797>\
**Category:** XBee & XBee Gateway\
**Tags:** xbee-pro-s2b, xbee-network, xbee-pro-s2c\
**Created:** [December 13, 2016, 2:13pm UTC](https://forums.digi.com/t/xbee-pro-s2b-and-xbee-peo-s2c-communication/17797 "2016-12-13T14:13:45Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Shine\_J](https://avatars.discourse-cdn.com/v4/letter/s/58f4c7/32.png) [@Shine\_J](https://forums.digi.com/u/Shine_J)\
**Post date:** [December 13, 2016, 2:13pm UTC](https://forums.digi.com/t/xbee-pro-s2b-and-xbee-peo-s2c-communication/17797/1 "2016-12-13T14:13:45Z")

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Hi! I’m working on a project but it seems that my 2 modules are not communicating.  
At first, using test terminals the modules are ok but as the s2b send a message but the s2c are receiving extra unwanted characters. I tried to fix it bit then.  
I cannot communicate both of them.

What should i do?

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**Author:** ![mvut](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/mvut/32/31_2.png) [@mvut](https://forums.digi.com/u/mvut)\
**Post date:** [December 14, 2016, 9:29am UTC](https://forums.digi.com/t/xbee-pro-s2b-and-xbee-peo-s2c-communication/17797/2 "2016-12-14T09:29:17Z")

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Try restoring to defaults first. Then make sure both are NOT in API mode.

Make sure one of them is configured as the Coordinator.

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<div class="post-metadata">

**Author:** ![Shine\_J](https://avatars.discourse-cdn.com/v4/letter/s/58f4c7/32.png) [@Shine\_J](https://forums.digi.com/u/Shine_J)\
**Post date:** [December 16, 2016, 11:49am UTC](https://forums.digi.com/t/xbee-pro-s2b-and-xbee-peo-s2c-communication/17797/3 "2016-12-16T11:49:39Z")

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Thank you for the answer sir 🙂

Yes. Only One is in API mode and also, only one is set as coordinator.

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<div class="post-metadata">

**Author:** ![mvut](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/mvut/32/31_2.png) [@mvut](https://forums.digi.com/u/mvut)\
**Post date:** [December 23, 2016, 11:36am UTC](https://forums.digi.com/t/xbee-pro-s2b-and-xbee-peo-s2c-communication/17797/4 "2016-12-23T11:36:24Z")

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Are the extra characters coming from the node that is in API mode?