System modifications during operation
17.4 Removing components in PCS 7
S7-400H
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System Manual, 03/2012, A5E00267695-11
17.4.8
Removing interface modules in PCS 7
Always switch off the power before you remove the IM460 and IM461 interface modules,
external CP 443-5 Extended DP master interface module, and their connecting cables.
Always switch off power to an entire subsystem. To ensure that this does not influence the
process, always set the subsystem to STOP before you do so.
Procedure
1.
Change the hardware configuration offline (see section PCS 7, step 1: Editing the
hardware configuration offline (Page 296))
2.
Modify and download the user program (see section PCS 7, step 2: Editing and
downloading the user program (Page 297))
3.
Stop the reserve CPU (see section PCS 7, step 3: Stopping the reserve CPU (Page 298))
4.
Download the new hardware configuration to the reserve CPU (see section PCS 7, step
4: Downloading a new hardware configuration to the reserve CPU (Page 298))
5.
Follow the steps below to remove an interface module from the subsystem of the reserve
CPU:
–
Switch off the power supply of the reserve subsystem.
–
Remove an IM460 from the central unit.
or
–
Remove an expansion unit from an existing chain.
or
–
Remove an external DP master interface module.
–
Switch on the power supply of the reserve subsystem again.
6.
Switch to CPU with altered configuration (see section PCS 7, step 5: Switching to CPU
with modified configuration (Page 299))
7.
Proceed as follows to remove an interface module from the subsystem of the original
master CPU (currently in STOP mode):
–
Switch off the power supply of the reserve subsystem.
–
Remove an IM460 from the central unit.
or
–
Remove an expansion unit from an existing chain.
or
–
Remove an external DP master interface module.
–
Switch on the power supply of the reserve subsystem again.
8.
Change to redundant system mode (see section PCS 7, step 6: Transition to redundant