Functions
5.9 Standard machine projects
PROFINET with STEP 7 V15
220 Function Manual, 12/2017, A5E03444486-AH
The following rules apply to a multiple use IO system:
● No IO device can be configured as shared device.
● The ports of the devices must be interconnected.
Devices for which no port interconnection is configured, for example, interface module
IM 154-6 IWLAN (ET 200pro PN), cannot be operated with STEP 7 V13 as IO devices on
a multiple use IO system.
● If an IO device in a multiple use IO system is an I-device (CPU as an "intelligent"
IO device):
– If the I-device has a lower-level IO system, this I-device cannot be connected to the
same PROFINET interface as the higher-level IO controller.
Note: If the I-device is configured using a PROFINET GSD, STEP 7 cannot check for
compliance with this rule. In this case, you are responsible for ensuring compliance
with the rule.
I-device in multiple use IO system. The PROFINET interface is operated as IO device. No other IO system is
A lower-level IO system on the I-device is connected to another PROFINET interface.
Figure 5-77 Example configuration for "Multiple use IO system" with I-device
– The PROFINET interface of the I-device must be set to "Parameter assignment of PN
interface by higher-level controller".
● If MRP (Media Redundancy Protocol) is configured:
– All IO devices on the multiple use IO system must belong to the same MRP domain.
● If IRT (Isochronous Real Time) is configured:
– All IO devices in multiple use IO systems must belong to the same sync domain.
– The sync domain must not include any other IO devices.
● IE/PB Links cannot be operated as an IO device in a multiple use IO system with STEP 7
V13.
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