DS2406P PIO Read (How?)

Projects Programming
1

Hello everyone!
I have 1-wire dual switch ds2406p.
Datasheet for ds2406p here:

I tryed to write code to read state of one of digital inputs of ds2406 (input PIO A).
I used library OneWire.h from here http://www.pjrc.com/teensy/arduino_libraries/OneWire.zip
I wrote some code:

#include <OneWire.h>
 
OneWire ds(9);
uint8_t address[8] = {0x12, 0x2E, 0xED, 0x3D, 0, 0, 0, 0xC7};
uint8_t CHANNEL_ACCESS = 0xF5;
uint8_t CHANNEL_CONTROL_BYTE = 0x44; //ALR=0;IM=1;TOG=0;IC=0;CHS1=0;CHS0=1;CRC1=0;CRC0=0
uint8_t buffer;
 
void setup(void)
 {
  Serial.begin(9600);
 } //end setup
 
void loop(void)
 {
  ds.reset();
  ds.select(address);
  ds.write(CHANNEL_ACCESS,1);
  ds.write(CHANNEL_CONTROL_BYTE,1);
  ds.write(0xFF,1);
  ds.write(CHANNEL_CONTROL_BYTE,1);
  ds.write(0xFF,1);
  buffer = ds.read();
  ds.reset();
  Serial.println(buffer);
  delay(2000);
 } //end loop

But, on a serial monitor a have always "255".
Please help

Thanks.

ArduinoMEGA
Linux Ubuntu
9600 baud