Pcs 7, Step 1: Modification Of Hardware; Pcs 7, Step 2: Offline Modification Of The Hardware Configuration - Siemens SIMATIC S7-400H System Manual

14.3.1

PCS 7, step 1: Modification of hardware

Starting situation
The fault-tolerant system is operating in redundant mode.
Procedure
1. Add the new components to the system.
2. Connect the required sensors and actuators to the new components.
Result
The insertion of non-configured modules will have no effect on the user program. The same
applies to adding DP stations.
The fault-tolerant system is operating in redundant mode.
New components are not yet addressed.
14.3.2

PCS 7, Step 2: Offline modification of the hardware configuration

Starting situation
The fault-tolerant system is operating in redundant mode.
Procedure
1. Perform all the modifications to the hardware configuration relating to the added hardware
2. Compile the new hardware configuration, but do not load it into the PLC just yet.
Result
The modified hardware configuration is in the PG/ES. The PLC continues operation with the
old configuration in redundant mode.
Configuring connections
The interconnections with added CPs must be configured on both connection partners after
you complete the HW modification.
S7-400H
System Manual, 09/2007, A5E00267695-03
– Plug new central modules into the racks.
– Plug new module into existing modular DP stations
– Add new DP stations to existing DP master systems.
NOTICE
With switched I/O: Always complete all changes on one segment of the redundant
DP master system before you modify the next segment.
offline. Assign appropriate icons to the new channels to be used.
System modifications in operation
14.3 Adding components in PCS 7
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