The S7-1500 standard CPU - the CPU 1507S - implements the function of a S7-1500 Controller as software on a PC with Windows. This enables a PC to be used for controlling machines or plants.

• Configuring and programming with the STEP 7 engineering tool in the TIA Portal (as from version 13 SP1):
• Programmable according to IEC 61131-3
• Programming languages supported:
  • SCL (IL)
  • LAD
  • FBD
  • STL
  • GRAPH7 (SFC)
• Innovative real-time system based on virtualization technology;
  The real-time system of the integrated S7-1500 software controller enables parallel, independent operation of Windows:
  • Maximum real-time and deterministic properties
  • Operation independent of Windows – supports restart of Windows while the controller is in operation
  • Fast restart of the control independently of Windows
• High-speed program execution with several priority-controlled execution levels (cyclic, time-controlled, isochronous with PROFINET or PROFIBUS, event-driven via process and diagnostics alarms)
• Saving of retentive data;
  The software controller ensures the security of plant data even when the power fails:
  • Storage of retentive data on PC hard disk (UPS required)
  • Saving of retentive data on the NVRAM of the CPU possible during voltage dips
• Communication
  The software controller uses the interfaces of the PC for PROFINET and PROFIBUS:
  • Windows-independent use of PROFINET or PROFIBUS for operating a distributed I/O. Depending on the interface hardware used, the following functions are possible:
    PROFINET IO RT, PROFIenergy, PROFIBUS DP-Master, I-device
  • Communication (SIMATIC communication, open user communication) with Windows applications or external devices via the Windows interfaces of the PC
  • OPC UA server with OPC UA data access and OPC UA security functions. Can be reached via the PROFINET interfaces of the software controller
• Integrated web server;
  Scanning the CPU via the web server is supported by all CPUs of the S7‑1500 automation system. The CPU web server offers the following diagnostics options:
  • Image of the CPU with LEDs and the current operating state
  • Readout of the diagnostics buffer entries
  • Query of module status
  • Query of current messages
  • Information on the status of the topology / PROFINET devices
  • Transfer and management of user data into load memory of the CPU
  • User-programmable web pages for supporting servicing and commissioning of specific machine functions
• Trace functionality
  The trace function is supported by all CPUs of the S7-1500 automation system. It supports the recording of analog and digital variables for each cycle and their representation as a curve with STEP 7. This is especially useful for motion control or closed-loop control applications.
• Integrated technology:
  • S7-1500 motion control;
    PLCopen blocks for programming the motion functionality via PROFINET IO and PROFIdrive interface.
    This functionality supports rotational speed axes, positioning axes and external encoders.
  • Integrated control functionality;
    Universal PID or 3-step controller with integrated optimization and integrated temperature controller.
• Integrated system diagnosis:
  The system diagnosis is automatically generated and displayed via a PG/PC, HMI‑device, the web server or the integral display. System diagnostics are also available when the CPU is in STOP mode.
• Integrated safety:
  • Know-how protection;
    Algorithms can be reliably protected against unauthorized access and modification.
  • Access protection;
    The extended access protection provides comprehensive protection against unauthorized configuration changes. Various authorization levels are available for assigning separate rights to different user groups.
  • Integrity protection;
    The system protects the data transferred to the CPU against unauthorized tampering. Modified or third-party transmissions of engineering data are safely detected by the CPU and prevented.
• Transfer of a configuration via a "PC system configuration" file
  • Configuration export with TIA Portal
  • Configuration import via script commands or the PC station menu
• Execution of ODK functions
  • Loading of ODK function libraries
  • Asynchronous execution of functions under Windows
  • Synchronous execution of functions in real-time context