Siemens SIMATIC ET 200AL, System Manual

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Functions
5.8 Direct data exchange
PROFINET with STEP 7
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Function Manual, 05/2021, A5E03444486-AL
Editing the transfer area
Set the properties of the transfer area under "General" > "Direct data exchange" > "Name of
transfer area" > "Detail of the transfer area".
Figure 5-83 Properties of the transfer area
Table 5- 5 Overview of the settings of the transfer area
Parameter Local Partner
Start address Set the start address of the input or output
transfer areas in the local CPU.
Set the start address of the input or output trans-
fer areas in the partner CPU.
Organization block Assign the transfer area to an isochronous
mode interrupt OB or the "MC-Servo" OB.
Assign the transfer area to an isochronous mode
interrupt OB or the "MC-Servo" OB.
Process image Select a process image partition, e.g. PIP 1.
If you have assigned "MC-Servo" as the organi-
zation block, STEP 7 automatically sets
"PIP OB Servo" as the process image.
Select a process image partition, e.g. PIP 1.
If you have assigned "MC-Servo" as the organiza-
tion block, STEP 7 automatically sets
"PIP OB Servo" as the process image.
Data length [bytes] Set the size of the transfer area. -
Downloading the configuration to devices
Rules:
•
Download the configuration to all CPUs involved.
• If you make changes to the configuration of the direct data exchange, download these
changes to all CPUs involved.