Siemens SIMATIC S7-400H - Hardware Requirements for System Modification During Operation; Permitted System Modifications: Overview; Software Requirements for System Modification During Operation

Installation of a CPU 41x-H
4-34
Automation System S7-400H Fault-tolerant Systems
A5E00068197-07
Hardware Requirements for System Modification During Operation
The following hardware requirements must be met in the commissioning phase to
enable system modifications during ongoing operation:
• Use of an S7 400-CPU, firmware V3.1.0 or later
• S7 400 H-CPU only in single mode
• If you are using an extended CP 443-5, it has to be firmware V5.0 or later.
• If you want to add modules for the ET 200M: Use the IM153-2 as of MLFB
6ES7 153-2BA00-0XB0 or IM153-2FO as of version MLFB 6ES7
153-2BB00-0XB0. You will also need to install the ET 200M with an active
backplane bus with enough free space for the planned expansion. The ET
200M has to be integrated in such a way that it conforms to IEC 61158.
• If you wish to add entire stations: be sure to include the required connectors,
repeaters, etc.
• If you wish to add PA slaves (field devices): use IM157 version MLFB 6ES7
157-0AA82-0XA00 or later in the corresponding DP/PA Link.
Note
You can freely mix components that are cable of system modification during
operation and those that are not. Depending on the chosen configuration, there
may be restrictions to the components that can be modified during operation.
Software Requirements for System Modification During Operation
You require STEP7 V5.2. to be able to perform system modifications during
ongoing operation the user program must be written in such a way that such
events as station failures or module faults do not result in a CPU STOP.
Permitted System Modifications: Overview
The following modifications can be made to the system during operation:
• Addition of modules for modular DP slaves ET 200M, ET 200S, ET 200iS, if
they respond in accordance with IEC 61158
• Use of a free channel on an existing module for the modular slaves ET 200M,
ET 200S, ET 200iS
• Addition of DP slaves to an existing DP master system
• Addition of PA slaves (field devices) to an existing PA master system
• Addition of DP/PA couplers behind an IM157
• Addition of PA links (including PA master systems) to an existing DP master
system
• Assignment of modules to a process image partition