# Input from ports

**URL:** <https://forums.digi.com/t/input-from-ports/9088>\
**Category:** Rabbit\
**Created:** [May 22, 2007, 5:17am UTC](https://forums.digi.com/t/input-from-ports/9088 "2007-05-22T05:17:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kalpenc](https://avatars.discourse-cdn.com/v4/letter/k/a8b319/32.png) [@kalpenc](https://forums.digi.com/u/kalpenc)\
**Post date:** [May 22, 2007, 5:17am UTC](https://forums.digi.com/t/input-from-ports/9088/1 "2007-05-22T05:17:10Z")

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Hi Raphael,

thanks for reply, well there is not BL2100 in my system. i m using RCM2300 Chip & ADC\_MX\_SERIES PCB Board. there is one AD Chip named TCL2543CN.

thanks,  
Kalpen

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**Author:** ![Raphael](https://avatars.discourse-cdn.com/v4/letter/r/edb3f5/32.png) [@Raphael](https://forums.digi.com/u/Raphael)\
**Post date:** [May 25, 2007, 4:17am UTC](https://forums.digi.com/t/input-from-ports/9088/2 "2007-05-25T04:17:51Z")

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Kalpen,

I thought you were using a BL2100 but no matter. In any case you must connect your analog signals to the analog connections. PD5 and PE1 are digital. You can not connect the analog signal to these. I am unfamiliar with the hardware you are using but this is basic electronics. Google the part number for the A/D convertor and see what you find.

Raphael