Removing Components In Pcs 7 - Siemens SIMATIC S7-400H System Manual

14.4

Removing components in PCS 7

Starting situation
You have verified that the CPU parameters, such as monitoring times, match the planned
new program. If they do not, adapt the CPU parameters first (see section Editing CPU
parameters (Page 234)).
The modules to be removed and their connected sensors and actuators are no longer of any
significance to the process being controlled. The fault-tolerant system is operating in
redundant mode.
Procedure
Carry out the steps listed below to remove hardware components from a fault-tolerant
system in PCS 7. Details of each step are listed in a subsection.
Step
I
II
III
IV
V
VI
VII
S7-400H
System Manual, 09/2007, A5E00267695-03
What needs to be done?
Offline modification of the hardware configuration
Editing and downloading the user program
Stopping the standby CPU
Loading new hardware configuration in the standby CPU
Switch to CPU with modified configuration
Transition to redundant state
Modification of hardware
System modifications in operation
14.4 Removing components in PCS 7
See section
PCS 7, step I: Offline
modification of the hardware
configuration (Page 212)
PCS 7, step II: Editing and
downloading the user
program (Page 213)
PCS 7, step III: Stopping the
standby CPU (Page 214)
PCS 7, step IV: Loading new
hardware configuration in the
standby CPU (Page 214)
PCS 7, step V: Switch to
CPU with modified
configuration (Page 215)
PCS 7, step VI: Transition to
redundant state (Page 216)
PCS 7, step VII: Modification
of hardware (Page 217)
211