Cir Elements And I/O Address Areas - Siemens SIMATIC CPU 410 System Manual

Note
When STEP 7 identifies the bus parameters, it takes the configured slaves as well as the
CiR elements into account. When it converts CiR elements to real slaves and /or modules in
CPU RUN mode, the bus parameter will therefore remain unchanged.
You can add CiR elements either automatically or individually.
CiR Objects
Specify the following properties for a CiR object:
● The number of slaves that can definitely be added (Default: 15 per DP master system, 6
per PA master system)
● Volume of the I/O bytes for future use (Default: 1220 per DP master system, 80 per PA
master system). These specifications refer to future user data addresses. You can
configure diagnostics addresses regardless of these settings.
CiR Modules
Use a CiR module to define additional I/O volume for the modular ET200M /ET200iSP
distributed I/O device by specifying the number of additional I/O bytes in SUM. These
specifications refer to future user data addresses. You can configure diagnostics addresses
regardless of these settings.
There is never any need to fully utilize user data volume. However, the currently existing
user data volume may never be exceeded. STEP 7 ensures this.
See also
Defining CiR Elements (Page 174)
11.7.3

CiR Elements and I/O Address Areas

CiR Objects
The following rule applies to the DP master system: The total configured number of real
slaves and of the guaranteed number of slaves of a CiR object may not exceed the volume
of dynamic project data in the corresponding DP master.
HW Config monitors compliance with this rule when you define the CiR objects.
CPU 410 Process Automation/CPU 410 SMART
System Manual, 05/2017, A5E31622160-AC
11.7 CiR objects and CiR modules for PROFINET DP
Plant changes in RUN - CiR
171