# how to change data format from 8-bit to 7-bit with X-CTU?

**URL:** <https://forums.digi.com/t/how-to-change-data-format-from-8-bit-to-7-bit-with-x-ctu/16874>\
**Category:** XBee - 802.15.4\
**Tags:** data, format, change\
**Created:** [June 3, 2016, 8:02am UTC](https://forums.digi.com/t/how-to-change-data-format-from-8-bit-to-7-bit-with-x-ctu/16874 "2016-06-03T08:02:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![harsh.oza](https://avatars.discourse-cdn.com/v4/letter/h/958977/32.png) [@harsh.oza](https://forums.digi.com/u/harsh.oza)\
**Post date:** [June 3, 2016, 8:02am UTC](https://forums.digi.com/t/how-to-change-data-format-from-8-bit-to-7-bit-with-x-ctu/16874/1 "2016-06-03T08:02:53Z")

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I want to interface my xbee modules to PLC.I want PLC to communicate with PC with wireless xbee modules.  
For the same I need to change the configuration setting to 7 Bits-EVEN parity-1 Stopbits

I am using xbee s1,s2,s2b,s2c modules

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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:** [June 3, 2016, 4:27pm UTC](https://forums.digi.com/t/how-to-change-data-format-from-8-bit-to-7-bit-with-x-ctu/16874/2 "2016-06-03T16:27:42Z")

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The modules you are using do not support 7 data bits. They only support 8 data bits.