Functions
5.5 Intelligent DP slaves (I-slaves)
PROFIBUS with STEP 7 V13
90 Function Manual, 12/2014, A5E03775446-AC
Reaction of the transfer areas to mode changes
Table 5- 3 Reaction of the transfer areas to mode changes
Reaction of DP master input transfer areas
Reaction of I-slave input transfer areas
RUN→STOP RUN No updating of the process image The input transfer areas retain their current
values. (no access error)
STOP→RUN RUN The input transfer areas are updated by the
cyclic user program via the process image.
The input transfer areas are updated via the
process image.
RUN RUN→STOP The I-slave sets the input transfer areas on
the DP master to "0".
No updating of the process image
RUN STOP→RUN The I-slave sets the input transfer areas on
the DP master to "0".
After the startup program of the I-slave, the
input transfer areas of the DP master are
updated via the process image.
Prior to processing of the startup program,
the input transfer areas are updated via the
process image.
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