Connection to PROFIBUS or PROFINET including CPU functionality

Via interface modules the ET 200 pro is connected to the bus system, either the proven fieldbus PROFIBUS or PROFINET the leading Industrial Ethernet Standard.
ET 200pro Interface Modules are offered with CPU functionality in standard or failsafe variants.

SIMATIC ET 200 pro - CPU 1516pro

The ET 200pro distributed I/O system CPUs CPU 1516pro-2 PN and CPU 1516pro F-2 PN are based on the S7-1500 CPU 1516-3 PN/DP and offer two PROFINET IO communication interfaces.

The CPUs 1516pro-2 PN Standard and Fail-safe have a PROFINET IO interface with three PROFINET ports. The three ports have the same properties. In addition, you can implement a ring redundancy (MRP or MRPD) with ports 1 and 2. Ports 1 and 2 with M12 cable gland, as known from the IM154-8 PN/DP CPUs, are connected to the CPU by means of a connection module. Port 3 is a RJ45 socket that is permanently integrated into the CPU enclosure behind a porthole.

The 1516pro-2 PN and 1516pro F-2 PN CPUs support PROFINET IRT through this PN interface and thus permit short, predictable response times, even faster, deterministic data exchange with IO devices and a high immunity to interference from non-real-time data communication.


  • Configuration limits & functionality same as S7-1500 CPU 1516-3 PN/DP

  • Firmware Version V2.0

  • Station width up to 1m or up to 16 modules

  • Support of all currently available ET 200pro IO modules

  • Two PROFINET IO interfaces
    - X1 with 3 port switch (2 x M12, 1 x RJ45)
    PROFINET RT and IRT / IO Controller for up to 256 IO-Devices / I-device
    - X2 with1 Port (1 x M12)
    PROFINET RT / IO controller for up to 32 IO devices / I-device

  • Shared device for up to 4 controllers

  • Media redundancy with MRP and MRPD

  • Open Ethernet communication (TCP/IP, UDP, ISO-on-TCP)

  • OPC UA server (data access)

  • Web server functionality for information, status, diagnostics and online security features

  • Security Integrated

  • Integrated technology

  • Integrated system diagnostics

  • Trace function (display also via Web server)

Technical data


CPU 1516pro-2PN

CPU 1516pro F-2PN

Connection module

CM CPU 2PN M12, 7/8"

Degree of protection

IP 65/67

Memory (program/data)

1 MB / 5 MB

1,5 MB / 5 MB


10 ns


X1: PN IO interface with 3 Ports (2 x M12, 1 x RJ45)
X2: PN IO interface with 1 Port (1 x M12)

Mounting dimensions W x H x D (mm)

135 x 130 x 65

Article No.



CPU Module IM 154-8 PN/DP CPU

Interface Module IM154-8 PN/DP and IM 154-8 PN/DP F-CPU

The Interface module IM154- 8 PN/DP CPU with CPU functionality is based on the S7-300 CPU 315-2 PN/DP and offers the same quantity structures and functions.
The fail-safe interface module IM154-8FX PN/DP F-CPU is available for safety-related applications.

The IM154-8 PN/DP CPU as well as the fail-safe variant has two communication interfaces,

  • one combined MPI/ PROFIBUS DP interface, and

  • one PROFINET interface with three ports.

The IM 154-8 PN/DP CPU supports both PROFINET IO (up to 128 IO devices can be connected) and PROFINET CBA, as well as PROFIBUS DP (as master for up to 124 slaves).

The IM 154-8 PN/DP CPU is not only compatible with the programs of the S7-300 CPUs, but it also offers a high degree of data retentivity (protection against voltage failure). A separate LED signals maintenance alarms. Modules can be replaced easily thanks to the Micro Memory Card. Firmware can be updated over the network.

Furthermore, a web server functionality for information, status, diagnostics, clock synchronization via the Ethernet (NTP) is available. The open Ethernet communication (TCP/IP, UDP, ISO-on-TCP) permits reliable and high-speed data exchange.

Isochronous mode is possible on the PROFIBUS.There is less loading on the central controller because individual plant sections can be configured, commissioned, diagnosed and operated individually.