# Digital Pass thru not working. **URL:** \ **Category:** XBee - 802.15.4\ **Tags:** digital-io, xbee\ **Created:** [July 29, 2014, 8:56am UTC](https://forums.digi.com/t/digital-pass-thru-not-working/13373 "2014-07-29T08:56:07Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![ybotman](https://avatars.discourse-cdn.com/v4/letter/y/d78d45/32.png) [@ybotman](https://forums.digi.com/u/ybotman)\ **Post date:** [July 29, 2014, 8:56am UTC](https://forums.digi.com/t/digital-pass-thru-not-working/13373/1 "2014-07-29T08:56:07Z")
D-I/O pins not raising/lowering I am attempting to build a star (1 center, 2+ outer) network that passes digital and analog data over the xbee pins (from outer node to center - and eventually to my Arduino which works will with direct wiring). To simplify, i have reduced to 2 nodes. When using DOUT/IN the UART connection is working (this tested fine) however i cannot seem to affect the I/O Pins. I have upgraded to current/same firmware, and reset to factory. Inventory and config : 2 Sparkfun Breakouts (programed via Sparkfun FTDI) XBEE series 1 (Not pro) Node 1 configuration [ul] ATID=3141 ATD0=3 ATD1=3 ATIR=0 ATDL=3434 ATDH=0 ATSL=40A08277 ATSH=13A200 ATMY=5656 ATEE=0 ATCH=C ATDD=10000 ATVR=10ED [/ul] Node 2 configuration [ul] ATID=3141 ATD0=4 ATD1=5 ATIR=0 ATDL=5656 ATDH=0 ATSL=409F6478 ATSH=13A200 ATMY=3434 ATEE=0 ATCH=C ATDD=10000 ATVR=10ED [/ul] ---
**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:** [August 4, 2014, 2:45pm UTC](https://forums.digi.com/t/digital-pass-thru-not-working/13373/2 "2014-08-04T14:45:06Z")
You have not enabled either change detect or a sample rate on your Input module. This needs to be done for the input to sample and transmit.