Special functions of a CPU 41x
3.3 System modifications during operation
S7-400 Automation System, CPU Specifications
3-8 Manual, 10/2006, 6ES7498-8AA04-8BA0
3.3.2 Hardware requirements
Hardware requirements for system modifications during operation
To be able to make system modifications during operation, the following hardware
requirements must be met during commissioning:
● If you want to make system changes to a DP master system with an external DP master
(CP 443-5 extended) during operation, this must have at least firmware version V5.0.
● If you want to add modules to an ET 200M: Use of the IM 153-2 as of MLFB 6ES7153-
2BA00-0XB0 or the IM 153-2FO as of MLFB 6ES7 153-2BB00-0XB0. You must also set
up the ET 200M with active bus elements and adequate free space for the planned
expansion. The ET 200M must not be linked as a DPV0 slave (using a GSD file).
● If you want to add entire stations: Reserve the necessary bus connectors, repeaters etc.
● If you want to add PA slaves (field devices): Use of the IM 157 as of MLFB 6ES7157-
0AA82-0XA00 in the appropriate DP/PA-Link.
● Use of the CR2 rack is not permitted.
● The use of one or more of the modules listed below within a station in which you want to
make system changes during operation with CiR is not permitted. CP 444, IM 467.
● No multicomputing
● No isochronous operation in the same DP master system
Note
You can mix components that are compliant with system changes during operation and
those that are not (with the exception of the modules excluded above). You can,
however, only make modifications to CiR-compliant components.
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