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

System modifications during operation
17.4 Removing components in PCS 7
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
2. Modify and download the user program (see section PCS 7, step 2: Editing and
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
5. Follow the steps below to remove an interface module from the subsystem of the reserve
6. Switch to CPU with altered configuration (see section PCS 7, step 5: Switching to CPU
7. Proceed as follows to remove an interface module from the subsystem of the original
8. Change to redundant system mode (see section PCS 7, step 6: Transition to redundant
302
hardware configuration offline (Page 296))
downloading the user program (Page 297))
4: Downloading a new hardware configuration to the reserve CPU (Page 298))
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.
with modified configuration (Page 299))
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.
system mode (Page 300))
System Manual, 03/2012, A5E00267695-11
S7-400H