Consistent data
9.3 Consistent reading and writing of data from and to DP standard slaves/IO devices
S7-400H
116 System Manual, 03/2012, A5E00267695-11
Example:
The example of the process image partition 3 "PIP 3" below shows a possible configuration
in HW Config. Requirement: The process image was previously updated by means of
SFC 26/27 call, or the update of the process image was linked to an OB.
● PIP 3 at output: Those 50 bytes are stored consistently in process image partition 3 (drop
down list box "Consistent over > Total length"), and can thus be read by means of
standard "Load input xy" commands.
● Selecting "Process image -> ---" under Input in the drop down list box means: no storage
in a process image. You must work with the system functions SFC14/15.
Figure 9-1 Properties - DP slave
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