When abb standard io is set, the address value in devicenet bus is set to the address of DeviceNet. DeviceNet address of standard IO board is set through X5 terminal on the board. Unlike other manufacturers who use dip switches to set addresses, ABB's standard IO boards use short labels to set DeviceNet addresses. The address value is the address of the memory cell, and the pointer variable P stores the address value, which is the address of the memory cell allocated by the integer variable A. ..