Siemens SIMATIC NET CP 1604 - What Is IO Routing and When Is It Used

Operating hardware
4.3 IO routing
CP 1604 / CP 1616
68 Operating Instructions, 02/2017, C70000-G8976-C218-08
4.3.1
What is IO routing and when is it used?
Definition
Using IO routing, process data is exchanged between two PROFINET IO systems.
Example
A process controller user program controls a robot.
IO routing makes input/output data of the robot controller accessible to an IO controller for
the control level that can both read and write the data.
IO routing is a function that is configured for the IO Base interface.
When does it make sense to use IO routing?
The advantages of IO routing are in situations when a complex plant or machine is planned
with networked PROFINET IO systems.
Note
IO routing functionality is available only with PROFINET
IO RT communication.