S7-1200 Communication

Fast, easy and flexible industrial communication


SIMATIC S7-1200 Integrierte Kommunikation

Integrated PROFINET Interface

The SIMATIC S7-1200 supports communication with PROFINET IO devices as a PROFINET IO controller. By means of the integrated Web-server, information can be called via the CPU and process data via a standard Web browser. Data can also be archived from the user program during runtime.

Utilizing established TCP/IP standards, the integrated PROFINET interface provided with the SIMATIC S7-1200 can be used for programming or to communicate with HMI devices and additional controllers. As a PROFINET IO controller, SIMATIC S7-1200 now supports communication with PROFINET IO devices and drives.
The interface consists of a noise-immune RJ45 connector with auto-cross-over functionality,
which supports Ethernet networks and features a data transmission rate of up to 10/100

New with firmware version 4.0 CPU’s Profinet iDevice:
Easiest configuration for S7-1200 CPU’s into a Controller / device architecture by reading & writing into each others IO image.

Communication with third-party devices

Seamless integration of devices from other manufacturers is possible with the integrated PROFINET interface on the SIMATIC S7-1200. It is possible to connect and communicate with multiple third-party devices utilizing the supported open Ethernet protocols TCP/IP native and ISO on TCP.
This communication capability, which is configured with standard T-Send/T-Receive instructions provided by the integrated engineering system SIMATIC STEP 7 Basic, offers you an even higher level of flexibility in designing your automation solution.

New with firmware version 4.0 CPU’s now have more communications options:

  • CM IO link Master
    Fast and easy integration of the SIRIUS compact starters, M200D starters and SIRIUS soft-starters for simple starter control as well as third party IO link devices

Easy communication modules

Up to 3 communication modules can be added to any of the SIMATIC S7-1200 CPUs.
The RS485 and RS232 communication modules are fit for serial, character-based point-to-point connections. The library functions USS drive protocol and Modbus RTU Master and Slave protocols are already included within the SIMATIC STEP 7 Basic engineering system.

Fast fieldbus communication via PROFIBUS – the fieldbus standard

Thanks to the addition of Master or Slave to PROFIBUS DB for SIMATIC S7-1200 - the powerful fieldbus communication with fast reaction times - a uniform communication from the field level to the control level is achievable. This supports one of the most important requirements in the segment of compact automation.
There are two new communication modules (CMs) that facilitate the connection of S7-1200 to PROFIBUS. Up to 16 field devices may be connected as DP slaves with the DP Master
CM 1243-5, as decentralized peripheral ET 200 units, for example. The S7-1200 may function as a DP slave with the CM 1242-5 and may thus be connected to any other DP master. Both modules are easily connected to the backplane of the CPU on the left side.

Simple networking

To minimize cabling and provide maximum networking flexibility, the CSM 1277 Compact Switch Module can be used to configure a uniform or mixed network - with line, tree or star topologies. The CSM 1277 is a 4-port unmanaged switch, which allows you to connect the SIMATIC
 S7-1200 with up to three additional devices.

Simple Telecontrol applications via GPRS

Together with the GPRS communication processor, the S7-1200 CPU supports simple Telecontrol applications for monitoring and control of distributed stations using general packet radio service (GPRS). This enables machine to machine Telecontrol via Teleserver Basic as well as Data Acquisition. SMS messaging for event driven fault diagnostics are made possible with the GPRS module, and full Teleservice functionally can be realized for remote diagnostics, configuration & programming.

Easy communication via AS-i

AS-i is an open and manufacturer independent bus system transmitting process and machine level digital and analog signals up to the control system. Universal interface between actuators and sensors on the field level with easy integration of I/O modules, positioning switches, signaling columns, load feeders and motor starters into SIMATIC STEP 7 Basic.