System Planning; Distributed I/O Device - Siemens SIMATIC ET 200iSP Operating Instructions Manual

System planning

1.1

Distributed I/O device

Distributed I/O stations - Area of application
When a system is set up, it is common for the inputs to and outputs from the process to be
incorporated centrally in the automation system.
If the inputs/outputs are located at greater distances from the automation system, the wiring
can become very extensive and complex, and electromagnetic interferences can impair
reliability.
In such systems, it is often advisable to use distributed I/O stations:
• The controller CPU is located centrally.
• the I/O devices are distributed on site
• The high-performance network connection with high data transfer speeds ensures that the
control CPU and I/O devices communicate smoothly.
• Less installation effort since less cables are required.
Configuration variants
• ET 200iSP station on PROFINET IO (Page 17)
• ET 200iSP station on PROFIBUS DP (Page 21)
ET 200iSP
Operating Instructions, 11/2022, A5E00247483-AK
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