Digi International Inc XBEEPRO2 Manual Do Utilizador

XBee ZB firmware supports a number of analog and digital IO pins that are configured through software commands. 
Analog and digital IO lines can be set or queried. The following table lists the configurable IO pins and the corresponding 
configuration commands. 

To enable an analog or digital IO function on one or more XBee module pin(s), the appropriate configuration 
command must be issued with the correct parameter. After issuing the configuration command, changes must be 
applied on the module for the IO settings to take effect.

Pull-up resistors can be set for each digital input line using the PR command. The PR value updates the state of all 
pull-up resistors.

The XBee ZB modules have the ability to monitor and sample the analog and digital IO lines. IO samples can be read 
locally or transmitted to a remote device to provide indication of the current IO line states. (Only API firmware 
devices can send remote IO sample data out their UART.) 

There are three ways to obtain IO samples, either locally or remotely:

CD/DIO12

4

P2

PWM0/RSSIM/DIO10

6

P0

PWM/DIO11

7

P1

DIO4

11

D4

CTS/DIO7

12

D7

ASSOC/DIO5

15

D5

RTS/DIO6

16

D6

AD3/DIO3

17

D3

AD2/DIO2

18

D2

AD1/DIO1

19

DI

AD0/DIO0

20

D0

0

Unmonitored digital input

1

Reserved for pin-specific alternate functionalities

2

Analog input, single ended (A/D pins only)

3

Digital input, monitored

4

Digital output, default low

5

Digital output, default high

6-9

Alternate functionalities, where applicable