Pcs7, Step 1: Modification Of Hardware - Siemens SIMATIC S7-400H Manual

10.2.1

PCS7, Step 1: Modification of Hardware

Initial situation
The fault-tolerant system is working in the Redundant system mode.
Procedure
1. Add the new components to the system.
– Plug new central modules into the rack.
– Plug new module into existing modular DP stations.
– Add new DP stations to existing DP master systems.
Note
With switched I/O: End all modifications on one line of the redundant DP master
system first before starting modifications to the second line.
2. Connect the required sensors and actuators to the new components.
Result
Plugging in modules that have not yet been configured will have no effect on the
user program. The same applies to adding DP stations.
The fault-tolerant system continues to work in the Redundant system mode.
New components are not yet addressed.
S7-400H Programmable Controller Fault-Tolerant Systems
A5E00068197-04
Modifications to the System while in Operation
10-7