Siemens SIMATIC ET 200AL, System Manual

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Diagnostics and maintenance
4.9 Maintenance
PROFINET with STEP 7
112
Function Manual, 05/2021, A5E03444486-AL
4.9.3.3 Asset management data record for I-devices
With STEP 7 (TIA Portal) as of V15 and with S7-1500 CPUs as of firmware V2.5.2, you can
compile an asset management data record via a user program. Configured as an I-device,
these CPUs then supply the data from centrally plugged modules to a requesting IO controller
as assets.
"S7-1500 CPUs" also refers to the CPU variants S7-1500F, S7-1500T, S7-1500C, S7-1500 SW
Controller, S7-1500pro CPUs and ET 200SP CPUs.
Asset management records for I-devices
I-devices often represent machines. The PROFINET IO controller to which the I-device is
assigned only sees the PROFINET interface (also configured as an IO device) and the transfer
areas of the I-device configured by the machine manufacturer. The local modules of the I-
device are not visible or cannot be accessed.
The assigned IO controller can read the central modules as assets of the I-device by means of
an asset management record that the user program of the I-device compiles.
Figure 4-19 Assets of an I-device
Requirement
• S7-1500 CPU as of firmware V2.5.2, configured as I-device
• STEP 7 (TIA Portal) as of V15
• If an IO controller is to read the asset management record:
The PROFINET IO controller is programmed correspondingly to read an asset management
record.
For a SIMATIC IO controller, for example, you call a read instruction (RDREC) with record
index 0xF880. The instruction addresses any submodule of the I-device, for example the
first configured transfer area submodule.