Digi XBee User's Guide download pdf (Page 21)

XBee Analog I/O Adapter

21

Configuring inputs and outputs

Input selection

Six control lines from the XBee module are used to place the four external

terminals into the desired input mode.

The power-on default is 0-10VDC on all four terminals.

Set the analog mode

The AT commands D8, D4, and D6 set the analog mode for terminals 1

and 2. P0, D7, and P2 set the mode for terminals 3 and 4. All other

configurations are invalid. A Python module named xbeeain.py is available

to set the analog mode; see pages 24 and 25.

Terminal

Analog

Mode

Terminal

Analog

Mode

AT Commands

D8 D4 D6

Terminal 1 Current Loop Terminal 2 Current Loop 0 0 0

Current Loop Ten Volt 0 0 1

Ten Volt Current Loop 0 1 0

Ten Volt Ten Volt 0 1 1

Differential Differential 1 0 0

P0 D7 P2

Terminal 3 Current Loop Terminal 4 Current Loop 0 0 0

Current Loop Ten Volt 0 0 1

Ten Volt Current Loop 0 1 0

Ten Volt Ten Volt 0 1 1

Differential Differential 1 0 0

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 72 73

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