Siemens SIMATIC ET 200AL, System Manual

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Functions
5.3 Shared device
PROFINET with STEP 7
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Function Manual, 05/2021, A5E03444486-AL
5.3.3 Configuring an I-device as a shared device
Below, you will find a description of how you configure an S7-1500 as an I-device with STEP 7
Version 13 or higher and then use it in two projects as a shared device.
A "distributed" configuration with different engineering tools for different IO controller
families is generally also possible here. The procedure described below is based on STEP 7
V13 and is limited to a configuration with two IO controllers of the S7-1500 family that share
the transfer areas of an I-device as a shared device. The I-device itself is also an S7-1500 CPU.
Three projects are created with one IO controller each (PLC-I-Device, PLC_1, and PLC_2).
PLC-I-Device is used to configure the I-device. The PROFINET GSD variant of PLC-I-Device is
used in the PLC_1 and PLC_2 projects in order to assign the transfer areas in the respective
higher-level IO controller.
Shared I-device concept
For the introduction of the shared I-device concept, two roles are distinguished:
•
The role of manufacturer (e.g., machine manufacturer): The manufacturer configures and
programs an I-device that performs a particular automation task. Transfer areas are
defined as the I/O interface to the operator of the machine. These transfer areas can be
assigned to different IO controllers. For the connection to higher-level IO controllers, the
manufacturer provides a PROFINET GSD file and discloses the transfer areas via which the
I-device can be accessed.
• The role of the operator: The operator uses the I-device as a PROFINET GSD variant during
configuration of the PROFINET IO system and, in this process, specifies the I/O addresses
under which the IO controllers access the transfer areas.