System Resources; Currently Allocated System Resources; I/O Address Allocation; Overview Of The Internal Module Registers - Siemens SIMATIC IPC PX-39A Operating Instructions Manual

A.5

System resources

A.5.1

Currently allocated system resources

All system resources (hardware addresses, memory configuration, allocation of interrupts,
DMA channels) are assigned dynamically by the Windows® operating system, depending on
the hardware configuration, drivers and connected external devices. You can view the
current configuration of system resources or possible conflicts with Windows® as follows:
1. Press the "Windows key" and "R" simultaneously.
The "Run" dialog box opens.
2. Enter "msinfo32" in the "Open" field.
3. Confirm your entry with "OK".
A.5.2

I/O address allocation

A.5.2.1

Overview of the internal module registers

The following addresses are used for the internal registers:
I/O address (hex)
280 h
Base address + offset 0
Base address + offset 2
Base address + offset 5
Base address + offset 6
Base address + offset 7
The following tables describe the system resources for the factory state of the device.
See also
Watchdog timer (WDT) register (read/write) (Page 113)
SIMATIC IPC PX-39A
Operating Instructions, 08/2022, A5E51699601-AA
Input/output unit
Basic address
GPIO port select register
GPIO data register
WDT control register
WDT counter register
WDT status register
Hardware description
A.5 System resources
111