Address Space; Address Space Of The Digital Inputs And Digital Inputs/Outputs - Siemens SIMATIC S7-1500 System Manual

Device address (e.g., Ethernet address)
Device addresses are addresses of modules with interfaces to a subnet (e.g., IP address or
PROFIBUS address). They are required to address the various devices on a subnet, for
example, to download a user program.
Hardware identifier
STEP 7 automatically assigns a hardware identifier (HW identifier) for identification and
addressing of modules and submodules. The HW identifier is used, for example, for
diagnostics alarms or for instructions, to identify the faulty module or the addressed module.
In the "System constants" tab of the Inspector window, you will find all hardware identifiers
and their symbolic names (of the hardware identifier) for the selected module.
Figure 9-8
9.7

Address space

9.7.1

Address space of the digital inputs and digital inputs/outputs

Address space of the digital inputs and digital inputs/outputs
The assignment of address space depends on which digital inputs and digital inputs/outputs
are used:
• 8 DI/DQ at interface X142 (I/Os are assigned to the CPU)
• 12 DI, 8 DI/DQ at interface X122/X132 (I/Os are by default assigned to the SINAMICS
Integrated)
SIMATIC Drive Controller
System Manual, 11/2023, A5E46600094-AD
Automatic identification and addressing of modules and submodules in STEP 7
Configuring
9.7 Address space
155