Dear Nathan
Thank you very much
I used the method for Arduino pinMode setting them as OUTPUT to use XSHUT and, then as INPUT. on the other topic.
I finally understood after reading the detail under product page.
The sensor’s 7-bit slave address defaults to 0101001b on power-up. It can be changed to any other value by writing one of the device configuration registers, but the new address only applies until the sensor is reset or powered off.