Siemens S7-300 - Enabling the CPU as a PROFINET IO Device in the S7 Station; Configuring the CP as an IO Device with IRT Communication

Intelligent PROFINET IO device with S7-300 CP
7.2 Configuration (STEP 7 V5.5)
Configuring and commissioning S7 CPs for Industrial Ethernet
124 Configuration Manual, 09/2013, C79000-G8976-C182-13
7.2.2
Enabling the CPU as a PROFINET IO device in the S7 station
The CP is enabled for PROFINET IO device mode in the properties dialog and coupled
explicitly with the IO device.
Requirement: The CP has been inserted in the S7 station in HW Config.
Follow the steps below in STEP 7 / HW Config:
Note
The IP address of the PROFINET IO device and the IP address of the PROFINET IO
controller m
ust be located in the same IP subnet.
1. Open the "PROFINET" tab in the properties dialog of the CP.
For CPs with an Ethernet ERTEC interface, you will find the tab described here in the
properties dialog of the "PN IO" interface.
2. Assign the CP a unique device name as a PROFINET node. This name may only be
assigned once on the PROFINET IO line.
3. Select the "Enable IO device mode" option.
4. If you have already configured the IO device in a PROFINET IO system, click the "IO
Device Coupling" button. Follow the instructions in the online help of the displayed dialog.
5. If you do not want to use the CP as an IRT device, close the dialog with OK.
If you want to use the CP as an IRT device, first to continue with the steps in section
7.2.3.
6. Download the configuration data to the S7-300 station.
7.2.3
Configuring the CP as an IO device with IRT communication
The following steps are only necessary if you want to use the CP as a PROFINET IO device
for IRT communication. Follow the steps below in HW Config.
In the station of the IO device:
1. Open the properties dialog of the PROFINET interface of the CP by double clicking on the
row "X2 (PN-IO)" and open the "PROFINET" tab.
2. In the "IO device" box, deselect the "Enable parallel operation as IRT controller" option.
Note: You can configure the CP as an IRT controller or IRT device but not both at the
same time.
3. Close the dialog with "OK" and save the project.
In the station of the IO controller:
1. Open the station window of the controller station in HW Config.
2. Open the properties dialog of the IO controller and create the IRT configuration in the
"Synchronization" tab.