Entry type: Application example Entry ID: 109480071, Entry date: 11/05/2015
Connecting a distributed I/O to SIMATIC TDC with PROFINET RT and IRT
The multi-processor automation system SIMATIC TDC, used particularly in applications that are demanding from a control technology point of view, a distributed I/O system can be connected via PROFINET. We will show you how the configuration and programming of the communication can be performed via PROFINET RT as well as IRT.
The principal layout diagram shows a simple configuration of how to connect a distributed ET 200SP station to a SIMATIC TDC.
The SIMATIC TDC controller as PN-IO controller reads the inputs of a digital input card of the ET 200SP station and prepares it for further use in the user program. This is realized on the one hand, via PROFINET RT, and on the other hand, equidistant with PROFINET IRT using an isochronous task of the TDC controller.
This example describes
- a complete PROFINET RT and IRT configuration
- the blocks required in the CFC user program
- how to interconnect these
The example was created with the following components
- STEP 7 V 5.5 SP4
- SIMATIC TDC
- D7-SYS 8.1
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