Functions
5.2 Intelligent IO devices (I-devices)
PROFINET with STEP 7
128
Function Manual, 05/2021, A5E03444486-AL
5.2.4
Data Exchange between higher- and lower-level IO system
Introduction
The next chapter shows the data exchange between the higher- and lower-level IO system.
Transfer areas
Transfer areas are an interface to the user program of the I-device CPU. Inputs are processed
in the user program and outputs are the result of the processing in the user program.
The data for communication between IO controller and I-device is made available in the
transfer areas. A transfer area contains an information unit that is exchanged consistently
between IO controller and I-device. You can find more information on configuration and use
of transfer areas in the section Configuring the I-device (Page 1).
Summary of Contents for SIMATIC ET 200AL
Page 2: ......
Page 143: ......
Page 218: ......
Page 250: ......
Page 296: ......
Page 337: ......
Page 365: ......
Page 392: ......
Page 419: ......
Page 451: ......
Page 483: ......
Page 597: ......
Page 648: ......
Page 702: ......
Page 739: ......
Page 781: ......
Page 804: ......
Page 828: ......
Page 853: ......
Page 880: ......
Page 906: ......
Page 996: ...Diagnostics ...
Page 1121: ......
Page 1565: ......