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Figure 10-2
Integrating the PROFINET IO device SIMATIC VS120 in HW Config
In the configuration example above, the start of the 16 word long consistent communication
area of the SIMATIC VS120 Vision Sensor was set to input address 256 and output address
256 (slot 2). If these addresses are in the process image of OB1 (process image partition
"OB1-PI"), you can work in OB1 with process image access (for example "LIW 2", "TQB 1")
without violating the consistency. This applies only to CPUs that transfer consistent user
data using the process image, refer to the safety notice below.
If, on the other hand, these addresses are not in the process image of OB1, you will need to
access the communication area of the SIMATIC VS120 using SFCs 14 "DPRD_DAT" and
15 "DPWR_DAT" to ensure consistency.
Vision Sensor SIMATIC VS120
Operating Instructions, Edition 02/2006, A5E00757507-01
Process interfacing over an automation system (PLC, PC)
10.2 Integrating the PROFINET IO device SIMATIC VS120 in HW Config
10-5
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