Siemens SIMATIC ET 200AL, System Manual

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Functions
5.10 Standard machine projects
PROFINET with STEP 7
Function Manual, 05/2021, A5E03444486-AL
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Rules
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.
① I-device in multiple use IO system. The PROFINET interface is operated as IO device. No other IO system is connected
here.
② A lower-level IO system on the I-device is connected to another PROFINET interface.
Figure 5-93 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.